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,,. / 780( 9A.l) / Jn33wr ·..-t/~ WATER RECORDS OF U.S. VIRGIN ISLANDS 1962-69 UNITED ST ES DEPARTMENT OF THE INTERIOR ~ . GEOLOGICAL SURVEY IN COOPERATION WITH THE NATIONAL PARK SERVICE AND THE GOVERNMENT OF THE VIRGIN ISLANDS OF THE UNITED STATES (0 9 •/) 41,1, 3 /9/ 3 WATER RECORDS OF THE U.S. VIRGIN ISLANDS, 1962- 69 by Tully M. Robison and others U.S. Geological Survey Prepared in cooperation with The Government of the Virgin Islands of the United States and the National Park Service 1 9 7 3 - iii CONTENTS Page Introduction 1 Definition of terms and abbreviations 1 Downstream order and station numbers 2 Explanation of data 2 Surface water 2 Continuous streamflow stations 2 Partial record stations 4 Quality of water 4 Expression of results 4 Composition of surface water 5 Ground water 5 Supplemental data 6 Selected references . 6 St. Thomas, V.I. 9 Streamflow stations 9 Bonne Resolution Gut at Bonne Resolution 9 Lovenlund Gut at Lovenlund 16 Turpentine Run at Mt. Zion 17 Turpentine Run at Mariendal 26 Pond stage and discharge station 31 Hoffman Pond at Hoffman 31 Ground-water stations 41 St. John, V.I. 85 Streamflow stations 85 Cinnamon Bay Spring 85 Guinea Gut at Bethany 86 Ground-water stations 92 St. Croix, V I 117 Streamflow stations 117 River Gut at River 117 River Gut at Holy Cross Church 123 River Gut at Golden Grove 124 Bethlehem at Colquhoun 131 Bethlehem Gut at Upper Bethlehem 132 River Gut at Alexander Hamilton Airport 133 Envy Spring at Alexander Hamilton Airport. . . . • 134 Jolly Hill Gut at Jolly Hill 135 Creque Gut above Mt. Washington Reservoir. . • 141 Ground-water stations 149 iv ILLUSTRATIONS Page Figure 1. Map showing the geographic setting of the Virgin Islands of the United States. . . 7 2. Map showing locations of stations in St. Thomas 8 3. Map showing locations of stations in St. John 84 4. Map showing locations of stations in St. Croix 116 1 WATER RECORDS OF THE U.S. VIRGIN ISLANDS, 1962-69 by Tully M. Robison and others INTRODUCTION The surface-water, quality of water, and ground-water records of the Virgin Islands from 1962 through 1969 are presented in this report. The location of all stations in this report are shown on the individual island maps. Each island map is followed by the tabulation of water records for that island. The records were collected by the Caribbean District of the Water Resources Division, U.S. Geological Survey in financial cooperation with the Government of the Virgin Islands of the United States and the National Park Service. DEFINITION OF TERMS AND ABBREVIATIONS The terms of hydrologic data used in this report are defined as follows : Streamflow station, or gaging station, is a site on a stream or canal where observations of gage height and discharge are obtained. In general, there are three types of streamflow stations. a. Continuous-record station is a site where continuous record of stage and discharge is obtained. Information collected is used for various management, planning, hydrologic analysis, and project purposes. b. Partial-record station is a site where limited streamflow data are collected system­ atically over a period of years for use in hydrologic analyses. c. Miscellaneous-record station is a site where special-purpose streamflow data are collected on a non-systematic basis. Stage-discharge relation is the relation between gage height and the amount of water flowing in a channel, the flow being expressed as volume per unit of time (locally, in gallons per minute). Control designates a feature downstream from the gage that determines the stage- discharge relation at the gage. This feature may be a natural constriction of the channel, a long reach of the channel, or an artificial structure. Drainage area of a stream at a specified location is that area, measured in a horizontal plane, which is so enclosed by a topographic divide that direct surface runoff from precipitation normally would drain by gravity into the river above the specified point. Figures of drainage area given herein include non-contributing areas within the area unless otherwise noted. Hardness as CaCO3 is the calcium and magnesium expressed as an equivalent amount of calcium carbonate. Carbonate hardness is the hardness caused by calcium and magnesium equivalent to the carbonate and bicarbonate. Noncarbonate hardness is the hardness caused by calcium and magnesium in excess of the carbonate hardness. Specific conductance is a measure of the ability of a water sample to conduct electricity. It gives a rough measure of the degree of mineralization of the water. 2 pH is the negative logarithm of the hydrogen-ion concentration expressed in gram- moles per liter. However, when determined with a pH meter, which is the procedure normally used in Geological Survey laboratories, pH is an expression of the hydrogen-ion activity or the effective hydrogen-ion concentration. A neutral solution has a pH of 7; pH less than 7 indicates acidity, and pH greater than 7 indicates alkalinity. Land-surface datum (lsd) is a datum plane that is approximately at the natural land surface at a well. Mean sea level (msl) is the datum plane on which the Island-wide network of precise levels is based. DOWNSTREAM ORDER AND STATION NUMBERS Streamflow stations are listed in a down­ stream direction along the main stem of a stream with all stations on a tributary entering above a main-stem station listed before that station. If a tributary enters between two main-stem stations, it is listed between them. A similar order is followed listing stations on first rank, second rank, and other ranks of tributaries. To indicate the rank of any tributary on which a streamflow station is situated, and the stream to which it is immediately tributary, each indentation in the listing of streamflow stations in the table of contents of this report represents one rank. This downstream order and system of indentation shows which stations are on tributaries between any two stations on a main­ stream and the rank of the tributary on which each station is situated. Each recording and partial-record stream- flow station has been assigned a station number in downstream order. No distinction is made between continuous-record and partial-record stations in assigning station numbers. In addition to assignment by downstream order, station numbers are determined by the station's location on each island. The numbering of stations begins at the northwest corner of each Island, basin by basin in clockwise direction around the island. Gaps are left between numbers to allow for streamflow stations that later may be established; hence the numbers are not consecutive. EXPLANATION OF DATA Surface Water Continuous Streamflow Stations The base data collected at streamflow stations consist of records of stage and meas­ urements of discharge. In addition, observations of factors affecting the stage-discharge relation, weather records, and other information are used to supplement base data. The records of stage obtained either from direct readings of a non- recording gage or from a water-stage recorder that makes a continuous record of river stage. Measurements of discharge are made with a current meter by the general methods adopted by the Geological Survey on the basis of experience in stream gaging since 1888. These methods are described in Water-Supply Paper 888 and also are outlined in textbooks on the measurement of stream discharge. Rating tables giving the discharge for any stage are prepared from stage-discharge relation curves defined by discharge measurements. If extensions to the rating curves are necessary to define the extremes of discharge, they are made on the basis of indirect measurements of peak discharge ( such as slope-area or contraction measurements, computation of flow over dams or weirs, and by other methods), velocity-area studies, and logarithmic plotting. The applica­ tion of the daily mean gage height to the rating tables gives the daily mean discharge, from which the monthly and the yearly mean discharge are computed. If the stage-discharge relation is subject to change because of frequent or continual change in the physical features that form the control, the daily mean discharge is determined by the shifting-control method, in which correction factors based on individual discharge measurements and notes by engineers and observers are used in applying the gage heights to the rating tables. If the stage- discharge relation for a station is temporarily changed by the presence of aquatic growth or debris on the control, the daily mean discharge is computed by what is essentially the shifting- control method. For some streamflow stations, there are periods when no gage-height record is obtained or the recorded gage height is so faulty that it cannot be used to compute the daily discharge. 3 This happens when the recorder stops or other­ wise fails to operate properly, when intakes are plugged, or for various other reasons. For such periods the daily discharge is estimated on the basis of recorded range in stage, adjoining good record, discharge measurements, weather records, and comparison with other station records from the same or nearby basins. The streamflow data presented in this report for continuous-record station is comprised of a description of the station, and a table showing daily, monthly, and yearly discharge of the stream. Records arc published on a calendar-year basis. The description of the station gives the location, drainage area, records available, type and history of gages, extremes of stage and discharge „Ind general remarks. The location of the station is determined from the most iccurate maps available and from field observa­ tions and notes. Drainage area is obtained Pram U.S. t;oological Survey topographic maps. tinder "Records available " are given the periods and types of records which have been collected at the site. Under "Gage" are given the type of gage currently in use, the datum of ,joae above mean sea level. Under "Extremes" are given the maximum and minimum values for selected data at the station. It a particular maximum or minimum value is a ffected by factors such as diversion, regulation, etc., it is so indicated either in 'Extremes" or under "Remarks." In the first paragraph, the data given are for each calendar year of record included in this report unless Otherwise specified. In the second paragraph, the data given arc for the period of record within the calendar years indicated in the heading of the paragraph. Reliable information concerning major floods that have occurred outside the period of record is given in the third or last paragraph. Information pertaining to the accuracy of the records and to conditions which affect the natural flow or the water quality at the stream flow station is given under "Remarks." For stations equipped with water-stage recorders, the table of daily discharge gives the discharge corresponding to the daily mean gage height, unless there are large or rapid changes in discharge during a day. For days having these large or rapid changes, discharge for the day is computed by averaging the mean discharge for several parts of a day. For stations equipped with nonrecording gages, the table of daily discharge gives the discharge corresponding to once-daily readings of the gage, or to the mean of twice-daily readings, or to the mean gage height determined from a synthetic gage- height graph based on gage readings. For periods of rapidly changing stage, the daily mean discharge is determined from a gage- height graph based on gage readings, the frequency of which is stated in the station description. In the table of daily discharge, the figures for the maximum day and minimum day for each month are underlined. If two or more days have the same figure, it is underlined only on the first day of its occurrence. In the monthly summary below the daily table, the line headed "Total" gives the sum of the daily figures; it is the total cfs-days for the month. The line headed "Mean" gives the average flow in cubic feet per second during the month. Discharge for the month is expressed in thousands of gallons. In the yearly summary below the monthly summary, the figure for maximum is the maximum daily discharge, not the momentary discharge when the water was at crest stage. Likewise, the minimum in this summary is the minimum daily discharge. Peak discharge and the time of its occur­ rence and corresponding gage height for most stations are listed below the table of daily and montly discharge. All independent peaks above the selected base are given. The base discharge, which is given in parentheses, is selected so that an average of about three peaks a year can be presented. Peak discharges usually are not published for any stream for which the peaks are subject to substantial control by man. Footnotes to the table of daily discharge indicate periods for which the discharge was computed or estimated by unusual or special methods because of no gage-height record or other conditions that reduce the accuracy of the records. The footnotes are either reference footnotes, with corresponding symbols used in the table of daily discharge to indicate the days included; or they are general footnotes, intro­ duced by the word "Note," in which the days 4 included are stated. The methods used in com­ puting data for such footnoted periods have been explained in preceding paragraphs. Partial-Record Stations As the number of streams on which informa­ tion is desired far exceeds the number of stations feasible to operate at one time, the Geological Survey collects limited data at sites other than continuous streamflow stations. When limited data are collected on a systematic basis over a period of years, the site at which the data are collected is called a "partial-record station." Records for partial-record stations are used in low-flow or flood-flow analyses, water-quality variation studies, etc., depending on the type of data collected. In addition, measurements are made at sites not included in the partial-record network, generally in times of drought or of flood to give better areal coverage. These measurements, and other collected for some special reasons, are called measurements at miscellaneous sites. Generally, streamflow data are collected at partial-record stations in conjunction with quality-of-water data. Most partial-record station data are given in this report in combined surface-water and quality-of-water tables because of this close interrelation. A separate section for miscellaneous data in a river basin follows the information presented for other types of streamflow stations. This miscellaneous-records section also is presented in a downstream order. Each station location is described briefly, and drainage area, type of data, period of record, etc., are included if available. The data collected for a miscellaneous station are listed in a table following the station description. Measurements of discharge by indirect methods are made at streamflow stations of all types. These measurements are made following noteworthy floods, sometimes at locations where conditions prohibit measurements by current meter. Additional information on streamflow stations in the Virgin Islands can be obtained by request to the Caribbean District, Water Resources Division, U.S. Geological Survey, San Juan, Puerto Rico. Quality of Water The quality-of-water investigations of the U.S. Geological Survey are concerned with chemical and physical characteristics of surface-water and ground-water supplies. Most of the investigations deal with the amount of matter in solution and in suspension, in streams and underground. Samples for chemical analyses usually are collected at, or near, points on streams where streamflow stations are maintained for measurement of water dis­ charge, and at ground-water observation wells. Chemical analyses and water temperature of streamflow often serve as a basis for de­ termining the suitability of water for industrial, agricultural, and domestic uses. Stream discharge, and chemical quality to a lesser extent, are related to variations in rainfall. In general, lower concentrations of dissolved minerals may be expected during periods of high- flow than during periods of low flow. The concentration in some streams may change materially with relatively small variations in flow, whereas for other streams the quality may remain relatively uniform throughout a wide range in discharge. Records of chemical analyses and water temperature for selected ground-water obser­ vation wells and locations are a basis for determining suitability of water for most of the uses listed above for surface waters. These records also are used as an aid in deter­ mining ground-water origin and movement, and the composition of the material through which the water has passed. A descriptive statement is given for each quality-of-water data station, usually combined with the description for a streamflow station or observation-well station. This statement includes the location of the sampling station, drainage area, period of record, records avail­ able, and selected extremes. Records of streamflow at the time of sampling are included in most tables of chemical analyses. Expression of Results The dissolved mineral constituents are re­ ported in milligrams per liter ( equivalent to parts per million in dilute solutions). A cal­ culated quantity of sodium and potassium is given in many analyses, which is the quantity 5 of sodium needed in addition to the calcium and magnesium to balance the acid constituents. In most waters of moderate to high concentration, the proportion of potassium is much smaller than that of sodium. The hardness, as calcium carbonate (CaCO3), is calculated from the equivalents of calcium and magnesium. The hardness caused by calcium and magnesium (and other ions if significant) equivalent to the carbonate and bicarbonate is called carbonate hardness; the hardness in excess of this quantity is called non-carbonate hardness. This discharge of the stream is reported in gallons per minute and the temperature in degrees Celsius (centigrade, 'Cl. Color is expressed in units of the platinum-cobalt scale proposed by Hazen. Hydrogen-ion concentra­ tion (pH) is given as the negative logarithm of the number of moles of ionized hydrogen per liter of water. Composition of Surface Water Dissolved minerals . --All natural waters contain dissolved mineral matter. Water in contact with soils or rock, even for only a few hours, will dissolve some rock materials. The quantity of dissolved mineral matter in a natural water depends primarily on the type of rocks or soils through which the water has passed and the length of time it has been in contact with the rocks or soils. Streams are fed both by surface runoff and by underground water from springs or seeps. They reflect the chemical character of their concentrated underground sources during dry periods and are more dilute during periods of heavy rainfall. Underground water usually is more highly concentrated than surface runoff because it remains in ;,,iitact with the rocks and soils for much longer periods. The concen­ tration of dissolved solids in a river water frequently is increased by drainage from mines or oil fields, by the addition of industrial or municipal wastes, or by water excess to irrigation of crops. The mineral constituents and physical properties of natural waters reported in the tables of analyses in this report include those that have a practical bearing on the value of the waters for most purposes. The analyses generally include concentration of silica, iron, calcium, magnesium, sodium, potassium, bicarbonate, sulfate, chloride, fluoride, nitrate, and dissolved solids. Color, pH, and other dissolved constituents and physical properties are reported for certain streams. Ground Water Water-level data presented in this report were obtained from a network of observation wells located at significant places in important aquifers. Ground-water data tables follow those for streamflow stations in a stream basin. Data from observation wells outside defined drainage basins are included in this report with the records for a nearby basin. Water-level measurements are given in feet with reference to land-surface datum (lsd). Land-surface datum is approximately at land surface at each well. If known, the altitude of the land-surface datum above mean sea level is given in the well description. The height of the measuring point ( MP) above or below land-surface datum is given in each well description. The water level in wells equipped with recording gages is given for every fifth day and for the end of each month. In the collection of water-level data to serve the objectives of the observation-well program, the need generally is to measure changes in water level, rather than to determine the absolute position of the water surface. Because measurements are made in many types of wells and under varying conditions, neither the method of illeasurement nor the equipment can be standardized. At each observation well, however, the best possible combination of measuring technique and equipment is selected, and if no changes are made, the measurement at each well will be consistent. Water levels are reported to as many significant figures as can be justified by measuring conditions and the use of the infor­ mation. In general, measurements are reported to a hundredth of a foot, but some may be to tenths or whole feet. A well description precedes each data table. Included in this description are the type, geology, and location of the well, the extremes of water level, and the period of record. 6 SUPPLEMENTAL DATA Information of a more detailed nature than that published for many streamflow and ground­ water stations is on file in the USGS office. This information includes discharge measure­ ments, stage readings, chemical and physical parameters, and diverse well information. It may be obtained by request or inspected at Caribbean District, Water Resources Division, U.S. Geological Survey, Building 652, Fort Buchanan, Puerto Rico 00934. SELECTED REFERENCES Corbett, D. M. and others, 1943, Stream- gaging procedure, a manual describing methods and practices of the Geological Survey: U.S. Geol. Survey Water- Supply Paper 888, 245 p. Lane, E. W. and others, 1947, Report of sub­ committee on sediment terminology : Am. Geophys. Union Trans. , v. 28, no. 6, p. 936-938. ATLANTIC OCEAN ANEG PUERTO RICO SAN JUAN CUL EBR A OA, /40 (1 S 04f 7. ST.THOMAS TORTOLA ' a'? ST. JOHN oao VIRGIN GORDA VIEQUES CARIBBEAN SEA 67°00' 0 10 20 30 40 1,1c,m4t•rs 0 10 20 30 40 nide. t__ 66°30' 66°00' 65°30' 65°00' 1 1 1 Figure 1.--Geographic setting of the Virgin Islands of the United States. ST. CROIX 64°30' •• • CO A T L A N T C OCEAN 3 ti 2520 0&2580 01 2• 11P'i 45 • • 42 .43 38 4,6 37 vo* 10 39,ft CHARLOTTE AMALIE 36 20 COr 144015 •••4 40 21 IROPOR 41 17 18 19 di TUTU II 22 35• 16 23 12 — 18°201 2 720 v- 4se „ 26 2740 * 27,28 .* 314 +° 33 MT. 2760 13%44 "34 0 ZION 29 •••4 1 /4.1 32 0 CA RI BBE A N S E A EXPLANATION • 12 Drilled well ()13 Dug well 3 4 leo *two A2580 Streow station 3 3 0 —19°15' 55° 00' 64.55' 64° 50 I I Figure 2.--Locations of stations in St. Thomas. 9 ST. THOMAS, VIRGIN ISLANDS STREAMFLOW STATIONS 2520. Bonne Resolution Gut at Bonne Resolution Location.--Lat 18'21' 57", long 64° 57' 34", on left bank of irrigation-water storage pond, 0.5 mile upstream from Atlantic Ocean and 2.5 miles northwest of Ft. Christian, Charlotte Amalie, St. Thomas, V.I. Drainage area.--0.49 sq mi. Records available.--Discharge: December 1962 to February 1967. Chemical analyses: 1962-67. Gage.--Water-stage recorder and concrete control. Altitude of gage is 280 ft ( from topographic map). Extremes.--Maximums and minimums (discharge in gallons per minute, gage height in feet). Annual maximum discharge for years 1963-66 Annual minimum discharge for years 1963-66 Date Time Discharge Gage height Year Date Discharge Gage height Aug. 28, 1963 2000 35,900 3.61 1963 Dec. 1-31 9 2.20 Feb. 13, 1964 1900 860 2.46 1964 Many days 3 2.16 Nov. 24, 1965 0330 59,000 4.02 1965 Mar. 27-31 1.7 2.14 Sept. 10, 1966 1600 26,200 3.40 1966 Aug. 23, 24 4 2.17 1963-1969: Maximum discharge 59,000 gpm Nov. 24, 1963 (gage height 4.02 ft) ; minimum discharge 1.7 gpm Mar. 27-31, 1965 (gage height 2.14 ft). Remarks.--Discharge records fair below 140 tgd and poor above. Discharge in thousand gallons per day, calendar year 1962 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 3 4 ---- ---- -- ---- ---- -- -- -- -- -- -- y ---- ---- -- -- -- -- -- -- -- -- -- -- -- ---- ---- -- ---- ---- -- __ -- ---- -- -- -- -- -- -- -- -- ---- -- 7 7 7 12 12 6 -- -- __ -- -- -- -- -- ---- -- -- -- -- 12 28 8 9 10 ---- -- -- -- -- ---- ---- -- -- -- -- ---- -- 34 12 12 11 12 13 ---- -- ---- -- -- ---- -- __ -- ---- -- _- -- -- ---- -- ---- -- -- -- -- -- -- -- ---- 12 12 12 -- -- __ 15 __ __ __ __ __ -- -- -- -- -- -- 12 16 17 -- -- -- -- -- ---- ---- _- -- ---- ---- ---- ---- ---- 12 12 18 19 -- -- ---- -- -- -- -- ---- ---- -- -- ---- __ ---- -- -- -- -- -- __ 12 12 21 22 ---- -- -- -- -- -- __ -- -- -- -- ---- -- -- -- -- _- -- ---- -- __ -- 12 28 28 24 25 __ -- -- __ -- _ -- __ -- ---- ---- __ -- -- -- 7 12 26 27 28 29 ---- -- -- -- ---- -- -- __ -- -- ---- -- -- ---- -- 7 7 7 12 12 12 7 7 30 -- -- -- -- -- -- ---- -- -- -- 12 7 12 Total -- Mean -- Max-- Min-- -- -- ---- -- -- ---- -- -- ---- -- -- -- -- -- -- -- -- -- -- -- -- -- ---- -- -- ---- 412 13.3 34 7 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- __ -- -- -- -- -- -- -- __ __ __ -- -- -- __ Year 1962 : Total Mean Max Min Cfsm In. 10 Discharge in thousand gallons per day, calendar year 1963 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 33 34 23 43 14 14 39 39 61 39 23 34 14 14 70 440 41 36 22 19 22 22 16 16 3 47 39 14 39 39 43 14 70 47 19 19 16 4 49 14 14 34 39 43 14 39 31 19 60 16 5 23 14 14 34 39 34 14 38 31 19 19 16 6 14 14 14 34 43 23 131 34 36 16 19 16 7 8 14 14 14 14 14 14 67 1,460 43 43 23 23 330 39 34 45 31 31 16 19 50 55 16 16 9 14 14 14 520 43 23 23 43 26 16 40 16 10 14 14 14 100 39 23 23 39 22 16 22 16 11 14 14 14 61 375 23 23 34 26 16 22 16 12 14 14 14 43 165 23 14 34 22 16 19 16 13 14 14 23 39 330 23 14 34 26 360 19 16 14 14 14 23 34 180 23 14 34 22 150 19 13 15 14 14 14 34 87 23 14 34 22 41 19 13 16 14 14 14 260 120 23 14 34 26 31 19 13 17 18 19 ao 14 14 14 14 14 14 14 14 14 14 14 14 107 61 43 43 1,300 1,400 122 93 23 14 14 14 14 14 14 14 23 23 23 34 22 22 22 22 26 22 19 26 19 22 19 22 13 13 13 13 21 14 14 14 34 48 14 23 54 19 19 22 13 22 14 14 14 34 39 14 34 39 19 22 19 13 23 14 i4 14 34 34 14 23 34 19 100 19 13 24 25 14 14 14 14 23 66 23 23 39 34 14 14 45 23 23 23 19 16 31 26 19 19 13 13 26 27 14 14 14 14 350 70 23 23 34 34 14 14 23 14 23 290 54 31 90 63 19 70 13 13 28 29 23 14 14 -- 48 39 23 34 34 34 23 14 14 14 6,000 2,600 22 19 41 31 26 19 13 13 30 14 34 131 34 14 14 110 22 26 16 13 31 14 39 34 85 63 22 13 Total 569 455 1,009 3,473 4,999 644 802 10,385 823 1,359 775 442 Mean 18.4 16.2 32.6 116 161 21.5 25.9 335 27.4 43.8 25.8 14.3 Max Min 49 14 39 14 350 14 1,460 23 1,400 34 43 14 330 14 6,000 23 54 16 360 16 70 16 16 13 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -•- -- -- -- -- -- -- -- -- -- Year 1963 : Total 25,735 Mean 70.5 Max 6,000 Min 13 Cfsm 5 10 15 20 25 30 11 Discharge in thousand gallons per day, calendar year 1964 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 31 28 10 16 8 6 44 10 8 31 6 6 2 26 19 10 16 8 16 10 8 13 6 6 3 22 19 10 13 11 6 10 8 8 6 6 4 16 16 10 13 6 5 10 8 6 6 6 13 13 10 13 5 5 8 6 6 6 6 6 19 13 10 13 6 5 8 6 6 6 6 7 16 16 10 13 6 5 8 6 6 6 6 8 20 13 8 13 6 5 8 6 6 6 44 9 16 16 8 13 6 5 8 6 6 25 13 16 13 8 10 8 5 8 6 6 8 8 11 16 35 13 8 6 8 8 6 6 10 8 12 26 19 10 67 6 50 8 6 6 10 8 13 26 102 19 13 6 93 8 6 6 8 8 14 26 27 22 13 6 13 8 6 6 6 8 22 22 19 8 6 13 8 6 6 6 8 16 22 19 16 8 6 10 8 6 6 6 8 17 19 19 13 8 6 10 8 6 6 6 8 18 19 16 10 8 6 10 8 6 6 6 8 19 13 16 10 8 6 10 8 6 6 6 8 25 19 10 8 6 10 8 7 6 6 8 21 16 16 10 8 6 10 8 23 6 6 8 22 16 13 10 10 6 10 6 47 6 6 8 23 16 13 10 8 6 10 18 24 6 6 8 24 13 13 8 8 6 10 24 13 6 6 8 13 13 8 8 4 6 10 22 38 10 44 8 26 13 13 10 8 1 6 10 16 8 13 6 8 27 13 13 54 8 2 5 66 16 8 6 6 8 28 13 13 22 8 1 5 13 54 8 6 8 8 29 13 10 19 8 1 5 13 22 8 6 8 8 13 16 8 5 10 13 8 6 8 8 31 13 16 10 13 6 8 Total 561 577 419 364 302 184 500 382 319 231 255 275 Mean 18.1 19.9 13.5 12.1 9.74 6.13 16.1 12.3 10.6 7.45 8.50 8.87 Max 31 102 54 67 40 11 93 54 47 31 44 44 Min 13 10 8 8 6 5 5 6 5 6 6 6 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- -- -- -- -- Year 1964 : Total 4,369 Mean 11.9 Max 102 Min 5 Cfsm -- 5 10 15 20 25 30 12 Discharge in thousand gallons per day, calendar year 1965 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 3 4 13 8 6 8 11 5 5 5 5 5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 4 147 36 10 10 10 171 682 19 16 16 16 13 13 13 10 10 13 13 10 13 8 28 14 10 8 10 10 10 28 18 10 13 16 16 16 2,270 3,860 72 63 41 36 36 6 7 8 8 8 6 5 5 5 3.5 3.5 3.5 55 31 19 212 83 2,036 13 13 16 13 13 13 10 10 10 10 10 13 39 48 22 240 105 63 31 26 26 9 8 8 5 5 3.5 3.5 8 6 530 123 16 16 13 13 10 10 13 13 19 19 48 36 26 3,064 11 12 13 14 8 8 8 6 6 5 5 5 5 5 3.5 3.5 3.5 3.5 3.5 5 5 5 5 5 41 39 31 16 13 16 16 16 16 13 13 13 13 13 13 10 10 10 8 8 34 19 10 20 34 16 19 19 16 13 31 26 26 26 26 5,241 1,360 1,889 650 420 16 17 le 19 6 5 5 5 5 5 5 5 5 5 3.5 3.5 3.5 3.5 3.5 5 5 5 5 5 10 342 120 55 41 13 28 16 16 13 13 13 13 10 10 13 13 18 10 10 8 8 14 13 13 13 56 36 22 2,062 31 41 2,038 640 1,040 240 140 105 94 83 21 22 23 24 5 5 5 5 5 5 5 5 5 3.5 3.5 3.5 3.5 3.5 3.5 5 5 5 5 14 31 26 22 27 22 13 13 16 16 16 10 10 10 10 10 6 10 8 32 60 40 31 48 36 16 245 120 63 55 48 2,325 530 145 4,716 3,180 72 63 55 5,338 780 26 27 28 29 31 5 5 5 5 5 5 3.5 3.5 3.5 -- 3.5 3 2.5 2.5 2.5 2.5 6 150 22 16 16 90 41 41 31 26 22 16 16 19 13 13 30 14 8 8 75 16 16 13 8 18 10 8 13 13 19 13 13 41 36 31 26 19 16 1,204 530 240 140 83 1,792 650 530 420 170 140 Total Mean Max Min 201 6.48 13 5 134 4.79 5 3.5 104 3.34 3.5 2.5 607 20.2 150 3.5 4,954 160 2,036 10 468 15.6 23 13 449 14.5 75 8 411 13.3 60 6 526 17.5 48 8 3,198 103 2,062 10 23,688 790 4,716 16 23,653 769 5,338 26 Cfma-- -- -- -- -- -- -- -- -- -- -- -- In. Ao-rb -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Tear 1965 : Total 58,393 Mean 160 Max 5,338 Min 2.5 Cfsm 5 10 15 20 25 30 13 Discharge in thousand gallons per day, calendar year 1966 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 3 4 140 170 794 320 170 94 83 72 72 72 48 48 48 72 63 48 48 48 48 48 22 22 22 22 22 22 22 22 22 22 22 22 37 36 26 19 16 22 22 22 19 19 19 19 19 72 140 94 72 55 31 31 31 31 31 31 31 103 41 31 6 7 8 9 120 105 94 94 83 72 63 63 63 63 72 48 48 48 55 48 48 41 41 41 22 26 26 31 31 22 22 22 26 31 26 26 26 26 26 22 22 32 26 26 19 35 31 36 2,710 41 41 36 48 36 31 31 47 48 36 31 31 31 31 26 11 12 13 14 72 200 1,350 420 170 63 55 48 36 36 48 55 48 48 48 41 41 36 41 41 31 31 26 26 26 31 31 31 31 147 22 22 19 31 31 26 22 19 16 16 420 94 41 31 26 31 1,481 780 240 120 31 31 31 31 31 26 26 26 64 117 16 17 18 19 140 94 83 83 83 36 72 63 63 63 229 94 101 1,400 240 41 36 36 31 26 26 26 26 31 31 63 41 36 36 36 19 48 31 22 39 16 13 13 8 10 22 22 19 16 1,308 33 63 41 41 48 31 31 31 31 31 36 31 177 36 31 21 22 23 24 72 112 72 72 72 55 55 55 55 55 94 959 105 63 55 26 22 22 19 19 31 36 31 26 26 31 31 26 26 36 36 194 55 41 26 10 23 6 6 8 170 83 170 83 48 41 48 41 36 36 31 78 36 163 36 31 31 41 41 36 26 27 28 29 31 72 72 72 730 420 120 55 55 48 -- 48 48 48 48 63 48 19 26 26 26 22 26 31 31 26 26 26 31 31 31 31 26 26 22 19 19 19 19 8 39 22 19 19 19 41 36 2,241 780 140 31 31 36 31 31 31 31 31 31 31 31 31 41 36 31 31 36 Total Mean Max Min Cfsm 6,671 215 1,350 72 __ 1,685 60.2 94 36 -- 4,440 143 1,400 48 __ 1,056 35.2 48 19 -- 842 27.2 36 22 -- 1,016 33.9 147 22 -- 1,033 33.3 194 19 -- 567 18.3 39 6 -- 8,717 291 2,710 16 -- 3,956 128 1,481 31 -- 1,157 38.6 163 31 -- 1,343 43.3 177 26 -- In. Ac-ft -- -- ---- -- -- __ -- -- -- -- -- __ __ -- -- -- -- -- -- -- -- __ -- Year 1966 : Total 32,483 Mean 89.0 Max 2,710 Min 6 Cfsm In. 5 10 15 20 25 30 14 Discharge in thousand gallons per day, calendar year 1967 Day Jan. Feb. Mar Apr. May June July Aug. Sept. ,.)ct.. Nov. Dec. 1 2 3 4 19 31 31 31 31 36 26 26 26 26 78 36 31 26 26 -- ---- __ -- -- -- -- __ -- -- -- -- __ -- -- -- __ -- -- -- -- __ -- -- ---- ---- __ -- ---- -- -- -- -- -- -- -- -- -- 6 7 8 9 31 31 36 31 31 26 26 26 26 26 26 26 26 26 22 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ---- __ -- -- -- -- -- -- ---- -- -- -- -- -- -- __ -- ---- 11 12 13 14 31 31 26 26 26 26 26 26 26 26 22 22 -_ -- -- -- -- __ -- -- -- -- __ __ -- -- -- __ -- -- -- -- __ -- -- -- -- __ -- -- -_ -- -- ---- __ -- -- -- __ -- -- -- -- -- -- 16 17 18 19 26 210 63 48 41 77 26 26 26 26 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- __ -- ---- __ -- ---- __ -- __ __ -- 21 22 23 24 36 31 31 53 36 22 22 22 22 22 -- -- -- ---- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- __ 26 27 28 29 31 31 31 31 26 26 26 22 22 109 -- -- -- -- -- __ -- -- ---- -- __ -- -- -- -- __ -- -- -- __ -- -- __ -- -- -- __ -- -- -- -- -- __ -- -- -- -- -- ---- -- Total Mean Max Min Cfsm In. Ac-ft 1,189 38.4 210 19 -- -- -- 844 30.1 109 22 -- -- -- -- -- -- -- -- -- -- -- -- -- __ -- -- -- -- -- __ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- __ __ __ -- __ -- __ -- -- -- -- __ -- -- Year 1967 : Total Mean Max 14in Cfsrn -- -- -- -- -- 15 8 0 CHEMICAL ANALYSIS Milligrams per liter Hardness .--. 0 CaCO3 cn- Temperature ( °C) I Specific conducta nce (micromhos at 25°C) Date of collection Discha rge (gpm ) Fluoride ( F ) ' Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calcula ted Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) Bicarbonate ( HCO3 ) Ca rbona te ( 003 ) Calcium, as o. 174 -- -- -- 22 -- )ec. 30, 1962 10.8 -- -- 'eb. 23,1963 8.4 25 0.02 - 39 24 375 712 16 55 240 0.06 6.5 -- * 1,150 196 0 1,870 8.3 22 -- 190 -- -- -- 23 -- )pr. 20 11.7 -- -- Aay 25 25.1 -- 114 -- -- - 25 -- 148 -- -- - 28 -- une 22 -- -- 224 -- -- - 26 -- (ug. 24 13.7 -- 1ept. 10 19.2 -- 210 -- -- - 27 -- 1ept. 28 17.6 -- 102 -- -- - 26 -- )ct. 12 10.4 -- -- 126 -- -- - 27 -- 178 -- -- - 24 -- )ct. 26 16.5 -- Vov. 16 15.0 26 .00 - 34 36 363 772 0 51 235 .5 3.8 -- * 1,110 233 0 1,820 8.1 24 -- Vov. 30 186 -- -- -- 24 -- )ec. 7 11.5 25 .06 -- 42 34 377 808 0 60 238 .5 2.3 -- 1,100 245 0 1,880 7.7 24 -- an. 25,1964 8.9 -- -- 232 -- -- -- 22 -- -eb. 29 -- -- 214 -- -- - 23 -- 190 -- -- -- 23 -- V1ar. 28 -- 21 .00 -- 32 35 270 572 0 48 205 .6 2.3 -- *960 224 0 1,570 8.1 25 -- Apr. 25 5.7 21 .15 - 24 36 360 652 12 66 258 .5 4.0 V1ar. 15 10.8 -- -- *1,080 208 0 1,860 8.3 27 -- May 2 -- 156 -- -- -- 28 -- May 23 6.5 26 .00 - 36 36 346 696 0 50 258 .6 2.0 *1,120 238 0 1,890 8.1 'une 20 6.2 25 .00 -- 36 33 315 636 0 46 240 .7 1.7 * 1,020 225 0 1,770 8.2 26 -- lune 20 -- 25 .02 -- 36 34 313 638 0 45 240 .5 .7 * 1,010 230 0 1,770 7.9 26 -- fuly 18 8.35 24 .00 -- 44 41 373 736 0 68 292 .7 2.3 * 1,230 278 0 2,050 8.0 26 -- fuly 25 7.9 24 .00 -- 58 28 341 688 0 55 265 .7 2.3 * 1,120 260 0 1,890 8.0 27 -- Aug. 22 4.6 25 .00 -- 40 39 353 704 0 56 275 .8 2.3 * 1,150 260 0 1,910 7.9 27 -- Sept. 19 4 26 .00 -- 36 39 369 730 0 57 280 .4 .0 *1,250 250 0 1,990 8.0 27 6 Dct. 23 7.0 24 .00 -- 36 32 336 654 10 46 248 .3 1.8 * 1,110 222 0 1,790 8.3 25 30 Nov. 21 3.5 30 .00 -- 44 40 446 956 0 56 283 .7 1.0 *1,197 275 0 2,010 8.0 24 10 Dec. 21 5.5 23 .02 -- 44 41 331 686 0 60 262 .6 2.9 * 1,140 278 0 1,880 7.8 22 12 fan. 18,1965 2.9 24 .02 -- 48 39 368 734 0 64 290 .5 1.0 * 1,180 280 0 2,020 8.1 22 22 Feb. 15 4.0 24 .00 -- 34 38 366 696 12 24 298 .6 1.3 * 1,160 242 0 2,060 8.3 22 10 Mar. 15 -- 24 .00 -- 32 44 367 716 8 18 310 .6 1.1 * 1,180 261 0 2,070 8.3 23 -- Apr. 26 5.3 22 .02 -- 48 40 295 678 20 12 225 .7 .6 1,160 284 0 2,050 8.3 24 5 May 5 750 14 .09 -- 22 23 169 270 0 61 160 .5 6.2 * 649 150 0 1,000 7.8 24 10 May 24 15.4 24 .00 -- 50 36 312 614 10 70 245 .6 14 *1,040 273 U 1,750 8.3 24 20 June 22 8.0 25 MO -- 56 40 372 734 10 74 290 8.8 *1,190 304 0 2,070 8.3 24 5 -x July 12 -- 24 .00 - 48 41 371 724 12 58 295 .6 5.1 * 1,210 288 0 2,070 8.3 26 5 Aug. 8 18 .00 28 24 243 470 0 42 188 .6 2.4 * 785 168 0 1,340 7.9 27 15 Sept. 17 -- 23 .00 40 29 312 626 8 36 235 .7 1.3 * 968 219 0 1,730 8.3 29 15 Sept. 24 23.0 -- -- 188 Oct. 15 9,7 44 28 320 674 14 32 218 .6 3.3 1,040 225 0 1,770 8.3 26 10 Oct. 27 /3.1 __ 196 -- -- -- 26 -- Nov. $ -- -- 90 --- -- -- 68 Nov. 11 104 220 .6 14 '970 256 0 1,630 8.0 26 -- 24 00 2U 27 .00 -- 48 33 300 580 0 Nov. 19 l',(1 -- -- -- -- --- -- i3O -- - -- 119 Nov. 26 .0 2.7 * 358 90 0 588 7.8 26 30 - 27 .00 -- 35 281 22 .04 0.00 16 12 90 1 98 0 20 1 1 Acv, ii, 50 540 6 100 125 .6 18 * 947 269 0 1,600 8.1 26 -- 0,1-: 3 17.5 24 .00 44 28 320 7 ,12 - (2 /18 6 3.3 * 1,040 225 0 1,770 8.3 26 10 -- --- -- - - - -- - 132 -- -- -- 23 -- --,t) -- )e,c . 20 '..) -- 220 -- -- - 23 -- 2? .00 14 14 .40 /94 I '6 " 520 118 0 870 8.'1 -- 20 1.: .01 - . :0, 1966 ',3 A, 2.6 .01 .00 40 19 1 ', 0 .. .0 1 1 . 5 * 9 0 l) ' 1 9 :1 1,510 8.4 --- 15 m agnesium Non- carbonate (7) o co - "0•,4 a+(0w U o 5 . Cl) 0 c7) " i<,,stdue on evaporation , t 180°C. 16 0 CHEMICAL ANALYSIS Milligrams per liter Specific conducta nce, (micromhos at 25°C) Hd Temperature (°C) -5 o Date of collection Discha rge (gpm ) Silica ( S102 ) Iron ( Fe ) Manganese ( Mn ) Calcium ( Ca Magnesium ( Mg ) Sodium ( Na Potassium ( K) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfa te ( SO4 ) . liardness -o Orthophospha te ( PO4 ) ,is CaCO3 - (.).- o vi 2. Ca lcium , mag nesium N on- ca rbona te MI a) 11 -0 -0 °a,> az 0 1.: c,., O . O ,t,0 8 r. z 1-E t-' 0 . 0 ,ec. 27,1965 in. 10, 1966 in. 17 3 n . 24 )n. 31 -- 53.6 60 68.2 23 26 24 -- 0.030.00 .01 .00 .02 .00 24 40 32 -- 14 29 29 -- 148 257 240 -- 294 504 474 -- 4 10 8 26 40 44 -- 115 215 186 230 190 0.1 .1 .5 3.2 4.8 1) -- -- -- -- -- -- -- * 520 * 900 * 905 -- -- 118 219 199 220 176 0 0 0 -- -- 870 1,510 1,380 -- -- 8.3 -- 20 8.4 -- 15 8.3 23 5 -- 22 -- - 22 -- eb. 7 eb. 14 eb. 21 eb. 28 Jar. 7 50 28 8.1 37 25 -- -- -- .02 .00 36 -- -- -- 34 -- -- -- 290 -- -- -- 566 -- -- -- 8 52 -- -- 226 240 250 260 245 1.0 -- 11 -- -- -- -- -- -- -- -- -- * 927 -- -- -- -- 230 192 216 208 220 0 -- -- -- -- 1,640 -- -- -- -- 8.3 21 10 -- 22 -- -- 23 -- - 23 -- -- 37 -- Tar. 14 jar. 21 jar. 28 pr. 4 pr. 11 33.3 15 10.9 30 25 25 25 .01 .00 .01 .00 .00 .00 39 36 34 25 28 26 312 276 310 560 548 560 12 12 10 54 36 54 242 209 235 .1 .1 .0 3.2 4.0 3.7 -- -- -- -- 1,000 -- * 928 * 961 -- 200 160 205 192 220 0 -- 0 0 -- 1 ,680 -- 1,550 1,640 -- 8.4 23 10 -- 23 -- 8.32320 8.424 10 -- 24 -- pr. 18 pr. 25 lay 2 lay 9 .95 37.5 25 -- .01 .00 44 -- 33 -- 326 -- 640 -- 16 -- 52 252 230 .1 -- 4.8 -- -- 1,070 -- 246 216 0 -- 1 ,820 -- -- 8.3 23 15 -- 24 -- lay 16 -- -- -- -- -- 260 -- -- -- -- 212 -- -- -- 24 -- lay 23 23.1 26 .01 .00 38 32 452 1,332 0 42 48 .8 5 -- 1,060 227 0 1 ,760 8.2 24 20 lay 30 -- 192 -- -- -- 25 -- ine 6 0 -- -- 236 -- -- - 26 -- me 13 -- 232 -- -- -- 27 -- me 24 -- 28 .00 .00 28 36 358 664 8 54 268 .4 4.3 -- 1,168 218 0 1 ,900 8.5 27 20 ily 2 -- 28 .00 .00 45 35 353 708 0 43 276 .6 8.5 1,170 256 0 1,950 8.2 28 10 ily 8 -- 27 .03 .00 31 32 359 650 8 45 275 1.0 7.4 * 1,140 209 0 1,880 8.3 30 10 ug. 29 7.15 26 .01 .00 44 36 345 680 6 45 275 .7 4.4 * 1,170 258 0 1,920 8.3 28 20 ept. 28 682 19 .00 .00 10 10 72 166 0 17 48 .2 1.5 * 347 66 0 442 7.4 24 70+ Pct. 31 -- 25 .00 .00 46 35 309 664 0 54 231 .5 4.1 * 1,04(1 259 0 1,790 8.1 -- 30 ov. 30 -- 22 .34 .00 32 41 210 502 0 36 176 .3 8.4 * 820 248 0 1,390 8.0 29 70' in. 3, 1967 -- 26 .00 .00 24 47 310 616 6 56 245 .3 8.9 1,130 253 0 1,780 8.3 -- 4. * Residue on evaporation at 180°C. 2580. Lovenlund Gut at Lovenlund, St. Thomas, V.I. Location.--Lat 18° 21' 39", long 64° 54' 28", 400 ft north of Lovenlund Road, 0.2 mile east of Estate Lovenlund, and 0.7 mile upstream from Atlantic Ocean. Drainage area.--0.55 sq mi. Records available.--Indirect discharge measurement of 1963 flood which occurred on Aug. 28, discharge 89,800 gpm. -- -- -- -- -- -- -- -- -- -- -- 17 2740. Turpentine Run at Mt. Zion, St. Thomas, V.I. Location.--Lat 18° 19' 56", long 64° 53' 20", on left bank 1.8 miles upstream from mouth and 2.7 miles east of Fort Christian, Charlotte Amalie. Drainage area.--2.32 sq mi. Records available.--Discharge: January 1963 to December 1969. Chemical analyses: 1962-68. Gaqe.--Water-stage recorder with 90-degree V-notch weir in concrete control. Altitude of gage is 90 ft (from topographic map). Extremes.--Maximums and minimums (discharge in gallons per minute, gage height in feet). Annual maximum discharge for years 1963-69 Annual minimum discharge for years 1963-69 Date Time Discharge Gage height Year Date Discharge Gage height Aug. 28,1963 2200 150,000 3.33 1963 Dec. 17 4 0.10 Nov. 9, 1964 0430 120 .40 1964 Nov. 6 0.5 .05 Dec. 10, 1965 0015 65,000 2.95 1965 Many days No flow -- Oct. 11, 1966 1745 20,000 2.41 1966 Aug. 24 3 .09 May 11, 1967 0015 1 ,000 .99 1967 Sept. 4 to 10 .14 .02 Aug. 8, 1968 1145 12,000 2.18 1968 Many days No flow -- May 23, 1969 1600 2,250,000 5.00 1969 Jan. 13 to 14 4 .10 1963-1969: Maximum discharge 2,250,000 gpm May 23, 1969 (gage height 5.00 ft); minimum discharge many days of no flow in 1965 and 1968. Remarks.--Discharge records fair below 3740 tgd and poor above. Discharge in thousand gallons per day, calendar year 1963 Day Jam. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 58 58 17 30 190 26 15 26 89 20 11 15 2 58 342 17 30 69 23 13 237 52 20 11 15 3 76 69 17 30 48 23 15 39 43 17 11 15 4 121 43 17 30 35 23 13 23 43 17 9 13 5 58 43 17 35 23 20 13 17 43 17 9 13 6 43 35 17 39 26 17 436 17 429 17 13 13 7 39 30 17 124 30 17 315 15 252 17 11 13 8 35 30 17 154 26 17 63 23 157 17 11 13 9 35 30 17 189 682 17 30 291 104 15 15 13 10 35 30 17 112 213 15 23 39 63 15 13 13 11 39 30 17 58 260 15 17 26 63 15 11 13 12 39 30 15 43 477 15 15 20 43 15 11 13 13 43 26 15 30 1,070 15 15 17 39 15 9 13 14 48 26 15 23 825 15 15 15 35 15 9 13 15 52 35 15 20 308 15 15 15 53 15 7 13 16 39 30 15 37 167 15 13 15 58 15 7 13 17 39 30 15 121 276 15 15 15 39 15 5.5 13 18 30 26 15 30 532 15 15 15 48 15 11 13 19 30 26 15 26 406 13 13 15 52 15 15 13 20 30 26 15 20 178 13 13 15 39 15 15 13 21 26 23 13 17 97 13 11 15 30 15 15 13 22 26 23 13 17 63 11 11 15 26 17 9 13 23 23 17 13 17 52 11 11 15 23 20 62 13 24 23 17 13 17 48 11 11 15 20 17 17 13 25 30 17 41 17 43 11 11 15 17 17 17 13 26 35 17 468 17 39 11 11 15 26 15 13 13 27 30 17 58 17 39 11 11 80 43 20 66 13 28 35 17 48 17 39 17 11 4,880 30 15 23 11 29 39 -- 35 17 35 13 11 3,830 23 15 15 11 30 43 30 446 35 26 11 626 20 11 15 11 31 48 30 30 26 190 11 11 - Total 1,305 1,143 1,084 1,780 6,361 479 1,218 10,611 2,002 495 466 401 Mean 42.1 40.8 35.0 59.3 205 16.0 39.3 342 66.7 16.0 15.5 12.9 Max 121 342 468 446 1,070 26 436 4,880 429 20 66 15 Min 23 17 13 17 23 11 11 15 17 11 5.5 11 Cfmn-- -- -- -- -- __ In. -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- Year 1963 : Total 27,345 Mean 74.9 Max 4,880 Min 5.5 Cfsm In. 5 10 15 20 25 30 18 Discharge in thousand gallons per day, calendar year 1964 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 11 13 7.2 17 5.5 5.5 4 4 4 4 2.8 2.8 5.5 2.8 1.9 1.9 1.9 1.2 5.5 2.8 1.2 1.2 1.2 1.2 3 13 13 5.5 5.5 4 2.8 2.8 1.9 1.2 2.8 1.2 1.2 4 13 13 5.5 5.5 4 2.8 1.9 1.9 1.2 1.9 1.2 1.2 13 11 5.5 5.5 4 2.8 1.9 1.9 1.2 1.9 1.2 1.2 6 7 11 11 11 13 4 4 5.5 5.5 4 4 4 4 1.2 1.2 1.9 1.9 1.2 1.2 1.2 1.2 .7 .7 1.2 1.2 8 11 11 4 5.5 4 4 1.2 1.9 1.2 1.2 .7 1.2 9 13 9 4 7.2 4 4 1.2 1.9 1.2 1.2 19 1.2 13 7.2 4 5.5 4 4 .7 1.9 1.2 1.2 1.9 1.2 17 12 13 13 11 9 4 5.5 5.5 4 2.8 2.8 4 4 .7 7.2 1.9 1.9 5.5 5.5 1.2 1.2 1.9 1.9 1.2 1.2 13 13 7.2 5.5 5.5 2.8 4 5.5 1.9 5.5 1.2 4 1.2 14 17 7.2 5.5 9 2.8 4 2.8 1.9 5.5 1.2 1.9 1.2 13 7.2 5.5 5.5 2.8 2.8 1.9 1.9 4 1.2 1.2 1.2 16 11 7.2 5.5 5.5 2.8 2.8 1.9 1.9 2.8 1.2 1.2 1.2 17 11 5.5 5.5 5.5 2.8 2.8 1.9 1.9 2.8 1.2 1.2 1.2 18 19 11 11 13 5.5 5.5 7.2 5.5 5.5 5.5 5.5 5.5 5.5 2.8 2.8 2.8 2.8 2.8 2.8 1.9 1.9 1.2 1.2 1.2 1.2 2.8 1.9 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 21 13 5.5 5.5 9 1.9 2.8 1.2 1.2 5.5 1.2 1.2 1.2 22 9 5.5 5.5 5.5 1.9 5.5 1.2 2.8 11 11 1.2 1.2 23 9 5.5 5.5 5.5 1.9 1.9 1.2 4 7.2 1.9 1.2 1.2 24 9 5.5 5.5 5.5 2.8 1.9 1.2 4 4 1.9 1.2 1.2 7.2 5.5 5.5 7.2 2.8 1.9 1.2 1.9 1.9 1.9 2.8 1.2 26 7.2 5.5 5.5 5.5 2.8 1.9 1.2 1.9 1.9 1.9 1.2 1.2 27 7.2 5.5 5.5 5.5 11 1.9 2.8 1.9 1.9 1.9 1.2 1.2 28 7.2 5.5 5.5 5.5 4 1.2 1.2 7.2 1.2 1.9 1.2 1.2 29 7.2 7.2 5.5 4 4 4 4 2.8 2.8 .7 .7 7.2 4 1.9 1.9 4 9 1.9 1.2 1.2 1.2 1.2 1.2 31 7.2 4 2.8 2.8 1.9 1.2 1.2 Total 338.4 234.4 157.0 167.9 105.5 87.2 72.5 66.5 97.8 60.8 59.5 37.2 Mean 10.9 8.05 5.06 5.60 3.40 2.91 2.34 2.15 3.26 1.96 1.98 1.20 Max 17 17 5.5 9 11 5.5 7.2 7.2 11 5.5 19 1.2 Min 7.2 5.5 4 4 1.9 .7 .7 1.2 1.2 1.2 .7 1.2 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- -- -- -- -- Year 1964 : Total 1,484.7 Mean 4.06 Max 19 Min 0.7 C sm 5 10 15 20 25 30 19 Discharge in thousand gallons per day, calendar year 1965 Day 1 2 3 4 Jan. 1.2 1.2 1.2 1.2 1.2 Feb. 0.7 .7 .7 .7 .7 Mar 0 0 0 0 0 Apr. 0 0 0 0 0 _ May 0.4 .3 .2 .2 .2 June 0.7 .7 .7 .4 .7 July 0.4 .4 .4 .3 .3 Aug. 0 0 0 0 0 Sept. 0 0 0 0 0 Oct. 0.3 .3 .3 .3 .3 Nov. 0.7 .7 .7 1,127 4,155 Dec. 11 11 11 13 11 6 7 8 9 1.2 1.2 1.2 1.2 1.2 .7 .7 .7 .7 .7 0 0 0 0 0 0 0 0 0 0 3.0 5.5 4 266 30 .7 .7 .7 .7 .7 .3 .3 .3 .3 .3 0 0 0 0 0 0 0 0 0 0 .3 .3 .3 .2 .2 843 130 69 30 15 9 9 11 9 8,303 11 12 13 14 1.2 1.2 1.2 1.9 4 .7 .4 .4 .4 .3 0 0 0 0 0 0 0 0 0 0 5.5 2.8 1.9 1.2 .7 .7 .7 .7 .7 .7 .2 .2 .2 .2 .1 0 0 0 0 0 0 0 .1 .1 0 .2 .1 0 .3 .3 2.8 1.9 1.2 .7 .7 5,071 3,461 2,330 916 419 16 17 18 19 2.8 1.9 1.2 1.2 .7 .3 .3 .3 .3 .2 0 0 0 0 0 0 0 0 0 0 .7 2.8 2.8 1.2 .7 .7 .7 .7 .7 .4 .1 .1 .1 0 0 0 0 0 0 0 0 .2 .2 .2 .1 .4 1.9 .4 3.2 623 .7 .7 .7 .7 .7 226 138 104 76 63 21 22 23 24 .7 .7 .7 .7 .7 .2 .2 .2 .1 .1 0 0 0 0 0 0 0 0 0 0 .7 .7 .7 .7 4 .3 .3 .3 .3 .3 0 0 0 0 0 0 0 0 0 0 .7 .7 9.0 .7 .3 272 150 30 13 9 .4 .4 .4 .4 10.3 58 52 48 1,050 309 26 27 28 29 31 .7 .7 .7 .7 .7 .7 .1 .1 .1 -- 0 0 0 0 0 0 0 0 .7 .7 .4 4 1.9 1.9 1.9 1.9 1.2 .3 4.8 1.2 .7 .4 0 0 0 0 0 0 0 0 0 0 0 0 .4 .4 .4 .4 .4 5.5 2.8 1.9 1.2 1.2 1.2 902 301 97 23 15 397 130 121 104 82 76 Total Mean Max Min Cfsm In. Ac-ft 37.0 1.19 4 .7 -- __ -- 11.7 .42 .07 .1 -- __ -- 0 0 0 0 --_ -- 1.8 .06 .7 0 -- ---- 349.7 11.3 266 .2 -- -- -- 22.3 .74 4.8 .3 -- -- -- 4.5 .15 .4 0 _ __ -- 0 0 0 0 -- -- -- 14.3 .48 9.0 0 -- -- -- 1,120.4 36.1 623 0 -- -- -- 7,731.8 257 4,155 .4 -- -- -- 23,629 762 8,303 9 -- -- -- Year 1965 : Total 32,922 Mean 90.2 Max 8,303 Min 0 Cfsm -- 20 Discharge in thousand gallons per day, calendar year 1966 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 3 63 76 76 66 52 52 48 48 23 23 20 23 26 26 23 23 23 23 23 23 13 15 15 15 11 11 11 13 15 13 13 15 5.5 5.5 5.5 5.5 15 20 15 15 17 15 15 15 17 15 15 43 5 63 48 26 23 23 15 11 9 5.5 13 15 92 7 8 9 iu 58 58 52 52 58 43 39 39 35 35 26 23 23 23 71 23 23 20 23 23 23 20 23 30 23 15 15 15 15 15 9 9 9 9 9 9 7.2 11 11 9 5.5 7.2 7.2 7.2 187 13 13 13 97 30 15 15 15 20 57 96 43 23 17 17 11 12 13 14 15 63 63 1,102 413 105 30 30 35 35 35 52 52 43 43 30 23 20 20 23 159 23 23 20 20 20 13 13 13 13 15 9 11 35 23 15 9 9 7.2 7.2 7.2 50 13 11 11 11 1,055 3,242 1,038 1,136 504 46 20 17 15 15 17 17 17 17 39 16 17 18 19 20 82 76 69 63 63 35 48 48 43 35 30 35 35 165 96 48 35 35 84 97 20 20 17 23 20 17 15 15 15 15 13 15 11 11 15 7.2 7.2 5.5 5.5 5.5 9 9 9 7.2 9 222 398 157 97 69 17 17 17 17 17 20 17 17 17 17 21 22 23 24 25 63 58 58 58 58 43 30 30 30 30 69 133 52 43 43 43 30 26 23 23 20 17 17 17 17 13 13 13 13 13 13 17 13 13 11 5.5 9 5.5 4 4 7.2 5.5 7.2 7.2 7.2 58 43 35 39 30 26 35 87 42 35 17 17 113 152 82 26 27 28 29 30 31 58 58 58 58 58 58 26 26 23 -- 35 30 35 30 30 30 23 23 23 20 20 17 17 17 15 15 13 13 11 11 11 11 11 13 13 11 11 13 9 5.5 7.2 5.5 5.5 5.5 5.5 11 438 60 13 35 35 26 30 23 20 23 20 17 17 17 30 17 17 17 15 15 Total Mean Max Min 3,364 109 1,102 52 1,051 37.5 52 23 1,392 44.9 133 20 1,031 33.4 159 20 622 20.1 30 13 414 13.8 15 11 399 12.9 35 9 248.9 8.0 15 4 942.6 31.4 438 5.5 8,536 275 3,242 13 716 23.9 87 15 1,065 34.4 152 15 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- -- __ Year 1966 : Total 19,781.5 Mean 54.2 Max 3,242 4 Cf- In. 5 10 15 20 25 30 21 Discharge in thousand gallons per day, calendar year 1967 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 3 4 15 15 15 15 15 15 15 13 13 13 17 15 15 15 13 11 9 9 7.2 7.2 9 84 243 36 17 2.8 2.8 2.8 2.8 2.8 1.9 1.9 1.9 1.9 1.9 1.2 1.2 .7 .7 .7 0.3 .3 .3 .3 .2 0.4 .4 .3 .3 .3 2.8 2.8 2.8 4 4 2.8 2.8 1.9 1.9 1.9 6 7 8 9 15 15 15 15 15 13 13 11 11 11 13 13 13 11 11 7.2 7.2 7.2 7.2 7.2 15 15 15 15 13 2.8 2.8 2.8 2.8 2.8 1.9 1.9 1.9 1.9 1.9 .7 .7 .7 .4 .4 .2 .2 .2 .2 .2 .3 .3 .3 .3 10 4 4 4 4 4 5.5 2.8 1.9 7.2 9 11 12 13 14 13 13 13 13 13 11 11 11 11 13 11 11 9 9 13 7.2 7.2 5.5 7.2 7.2 13 9 7.2 7.2 7.2 2.8 2.8 4 4 2.8 1.9 1.9 1.9 1.9 1.9 .4 .4 .4 .4 .4 5.5 2.8 2.8 1.9 1.9 373 11 5.5 2.8 1.9 4 4 2.8 2.8 11 2.8 1.9 1.9 1.9 1.9 16 17 18 19 13 33 66 15 15 25 20 20 20 20 11 11 11 11 11 7.2 7.2 7.2 7.2 7.2 9 7.2 7.2 7.2 7.2 2.8 5.5 4 4 4 1.9 1.9 1.9 1.9 1.9 .4 .4 .4 .4 .4 1.9 1.2 1.2 1.2 .7 5.5 5.5 1.9 1.9 1.9 4 4 4 4 4 1.9 1.9 1.9 1.9 1.9 21 22 23 24 15 15 17 15 15 20 20 20 17 17 9 9 9 9 9 7.2 7.2 7.2 12 11 7.2 5.5 5.5 5.5 5.5 4 2.8 2.8 5.5 5.5 1.9 1.9 1.9 1.9 1.2 .4 .4 .4 .4 .4 .7 .7 .7 .4 .4 1.9 1.9 2.8 2.8 1.9 2.8 2.8 2.8 2.8 2.8 1.2 1.2 .7 .7 .7 26 27 28 29 31 15 15 15 15 15 15 19 23 20 -- 7.2 7.2 7.2 7.2 7.2 13 9 7.2 5.5 10 11 5.5 5.5 4 4 4 4 5.5 4 2.8 2.8 1.9 1.2 1.2 1.2 1.2 1.2 1.2 .4 .4 .3 .3 .3 .3 .4 .4 .4 .4 .4 1.9 1.9 1.9 1.9 1.9 2.8 2.8 5.5 2.8 2.8 2.8 .7 1.2 1.2 1.2 1.2 1.2 Total Mean Max Min 524 16.9 66 13 446 15.9 25 11 338.0 10.9 17 7.2 237.0 7.90 12 5.5 599.6 19.3 243 4 102.3 3.41 5.5 1.9 54.0 1.74 1.9 1.2 15.4 0.50 1.2 0.3 28.4 0.95 5.5 0.2 447.4 14.4 373 0.3 111.7 3.72 11 2.8 68.8 2.22 9 0.7 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. __ -- -- -- -- -- -- -- -- -- -- -- Ac- ft --' -- -- -- -- -- -- -- -- -- -- -- Year 1967 : Total 2,972.6 Mean 8.14 Max 373 Min 0.2 Cfsm In. 5 10 15 20 25 30 22 Discharge in thousand gallons per day, calendar year 1968 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 1.2 0.3 1.9 1.2 1.2 0.1 0 1.2 2.8 1.9 0 2 1.2 .3 1.2 2.8 .7 .1 0 11 2.8 .4 0 3 .7 .3 1.2 1.9 .7 .1 0 7.2 2.8 .3 0 4 .7 .3 1.2 1.9 .7 .1 .2 7.2 2.8 2.8 .1 .7 .3 1.2 1.2 .7 0 .3 7.2 2.8 .7 .1 6 .7 .3 1.2 1.2 .7 0 .3 7.2 2.8 .7 .1 7 .7 .3 1.2 1.2 .4 0 .2 1,983 2.8 .7 .1 8 .7 .3 1.2 1.2 .4 0 .2 1,905 25 .4 .1 9 .7 .4 1.2 1.2 .4 0 .2 98 13 .4 .1 .7 .4 .7 1.2 .4 0 .2 17 7.2 .4 .1 11 .7 .4 .7 .7 .3 0 .3 2.8 4.0 .4 .1 12 .7 .4 .7 .7 .3 0 2.8 1.9 5.5 .4 .1 13 .7 .3 .7 .7 .3 .1 1.9 4.0 4.0 .4 .1 14 .7 .3 .7 1.2 .2 .1 5.5 5.5 7.2 .4 .1 .7 .3 .7 1.2 .2 .1 1.2 5.5 4.0 .4 1.9 16 .7 .3 .4 .7 .2 0 .4 7.2 4.0 .4 1.9 17 .7 .7 .4 .7 .2 0 .4 7.2 2.8 .4 5.5 18 .7 .7 38 1.9 .2 0 .7 7.2 2.8 .4 2.8 19 .7 .4 11 2.8 .3 0 1.2 7.2 2.8 .4 1.9 .7 .4 7.2 1.9 .4 0 .7 7.2 2.8 .4 1.9 21 .7 .4 4.0 1.2 .4 0 687 7.2 5.5 .4 1.9 22 .7 .4 2.8 .7 .4 0 17 7.2 5.5 .4 1.2 23 .4 .4 1.9 .7 .4 0 485 7.2 2.8 .4 1.2 24 .4 .4 1.2 .7 .3 0 45 7.2 1.2 .4 1.9 .4 .4 1.2 .7 .3 0 11 7.2 1.2 .3 .7 26 .4 .4 1.2 .7 .3 0 5.5 7.2 1.2 .3 1.9 27 .4 17 1.2 .7 .3 0 1.2 7.2 2.8 .2 521 28 .4 7.2 1.2 .7 .2 0 2.8 7.2 2.8 .1 136 29 .4 2.8 1.2 .7 .2 0 4.0 7.2 2.8 0 583 .3 1.9 4.0 .2 0 2.8 4.0 1.9 0 573 31 .3 1.2 .2 1.9 4.0 0 Total 19.8 36.8 91.7 38.3 12.1 0.7 1,279.9 4,172.5 132.4 15.2 1,838.8 1,893.3 Mean 6.39 1.27 2.96 3.19 0.39 0.02 41.3 135 4.41 0.49 61.3 61.1 Max 1.2 17 38 4 1.2 0.1 687 1,983 25 2.8 583 1,158 Min 0.3 0.3 0.4 0.7 0.2 0 0 1.2 1.2 0 0 2.8 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- -- -- -- -- Year 1968 : Total 9,531.5 Mean 26.0 Max 1,983 Min 0 Cfsm In. C,0 Cs] 0 0C, 0 tf)0 CO CO CO COCO CO CO CO COCO C, .. .... ..... ..... .. COcocrCT)Ur) n nCf. M, cr,, CT) •-• V) .1. N N CNI C, C, C, CVC./ Cs) CN1 O .-4 C.), In tD 0 CI LE) ..--• .-.1 •-• Cs] .--.1 .--I 5 10 15 20 25 30 23 Discharge in thousand gallons per day, calendar year 1969 Day Jan. Feb. M,...:- Apr. ?lay June July Aug. Sept. 1/4.).t. Nov. Dec. 1 2 3 4 7.2 7.2 7.2 9 79 51 20 15 13 13 11,691 764 349 202 176 35 30 30 30 30 20 20 20 20 106 121 112 104 97 97 89 76 95 104 89 70 74 43 43 39 65 63 63 77 157 52 48 43 43 43 58 52 48 48 43 213 20 2,801 308 265 6 7 8 9 15 13 11 9 9 11 11 11 11 13 112 76 69 63 52 26 26 26 26 26 111 69 58 30 35 82 76 76 69 82 82 69 63 58 52 39 39 39 39 69 89 82 82 63 76 43 89 52 43 39 43 52 63 1,871 366 375 226 167 130 112 11 12 13 14 7.2 7.2 5.5 5.5 11 13 13 13 11 11 43 39 39 39 39 23 23 20 20 36 30 26 23 34 76 97 426 176 121 202 52 52 52 48 48 48 400 82 63 76 63 177 112 89 82 39 35 35 30 30 157 147 121 112 104 97 97 97 97 97 16 17 18 19 13 13 11 11 9 9 9 9 16 26 35 30 35 35 35 43 30 26 26 26 76 97 347 540 360 112 82 82 82 76 48 48 43 104 52 69 63 63 104 200 76 149 850 423 226 30 30 43 48 43 112 104 126 126 97 97 97 255 193 121 21 22 23 24 9 9 9 82 50 15 13 13 11 9 35 30 30 30 30 23 23 23 23 23 11,912 1,581 108,467 8,836 3,357 82 381 112 82 82 121 82 63 63 63 121 112 112 104 104 311 252 202 147 97 48 43 43 43 43 241 41,807 3,90(1 1,168 665 121 239 178 138 112 26 27 28 29 31 971 334 82 35 26 20 9 9 538 -- 26 23 23 26 48 35 23 23 20 20 20 1,026 541 324 226 167 138 82 82 82 104 69 52 52 77 48 43 43 104 97 82 89 52 52 76 69 58 52 52 43 39 39 39 264 90 399 340 713 496 226 - - - - 104 104 170 97 97 97 Total Mean Max Min 1,887.0 60.9 971 5.5 916 32.7 538 9 14,259 460 11,691 23 779 26.0 43 20 138,673 4,470 108,476 20 3,530 118 426 69 2,031 65.5 121 43 2,691 86.8 400 39 4,380 146 850 52 1,592 51.4 264 30 53,805 1,793 41,807 43 7,504 242 2,801 97 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- -- -- -- -- Year 1969 : Total 232,047 Mean 635 Max 108,476 Min 5.5 Cfsm In. - - 24 I CHEMICAL ANALYSIS Milligrams per liter Hardness as CaCO3 Hd Date of collection Discharge (gpm ) - O ___. -E7) '0 c .2 (7) Manganese ( Mn) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) Bicarbonate ( H003 ) Ca rbonate ( 003 ) Sulfate ( SO4 ) Chloride ( Cl) Fluoride ( F ) Nitrate ( NO3 ) Orthophosphate ( PO4 ) Dissolved solids calculated Ca lcium, magnesium Non- carbonate Specific conducta nce (microm hos at 25°C) Temperature ( °C) I Footnote )ec. 18, 1962 an. 18, 1963 'eb. 21 Aar. 23 Apr. 8 25 24.3 13.4 10.9 61.0 30 26 28 -- -- 0.00 .02 .02 -- - -- -- 52 46 48 -- -- 38 40 38 -- -- 469 489 -- -- -- 890 896 906 -- -- 18 0 0 58 59 -- 340 385 342 310 225 1.0 1.0 1.1 -- -- 5.1 .5 .7 -- -- -- -- -- -- -- -- *1,530 -- -- -- 286 280 276 340 216 0 0 0 -- -- 2,460 2,550 2,380 -- -- 8.4 23 -- 8.0 23 -- 8.2 24 -- -- 24 -- - 26 -- kpr. 25 vlay 16 vlay 20 une 18 kug. 29 14.9 194 115.8 13.5 1,740 -- -- -- -- 20 -- .13 - -- -- -- -- 20 -- -- -- -- 11 -- -- -- -- 81 -- -- -- -- 188 0 17 345 165 150 70 -- -- -- .3 -- -- -- .6 -- -- -- -- -- -- -- -- 342 164 154 268 95 -- -- -- -- 0 -- -- -- -- 541 - 25 -- - 27 -- - 27 -- -- 26 -- 7.4 27 -- Sept. 19 )ct. 22 )ct. 30 )ec. 24 an. 24,1964 25.6 25.6 -- 28.3 3.2 -- -- -- 27 -- -- .04 -- - -- -- -- 46 -- -- -- -- 61 -- -- -- -- 477 -- -- -- -- 1,010 -- 0 -- 60 124 1,290 360 -- -- 1.0 -- -- 3.9 -- -- -- -- -- *1,480 58 592 242 366 336 0 -- -- -- 2,500 - 27 -- - 26 -- -- 26 -- 7.7 26 -- 'eb. 28 Aar. 26 kpr. 22 v1ay 26 une 23 -- -- e3 3.3 5 26 28 29 33 32 .02 .00 .02 .00 .02 -- -- -- -- -- 44 44 46 48 46 61 60 57 62 62 439 458 438 493 461 916 954 878 1,012 936 0 0 0 0 0 52 50 63 42 43 360 365 365 408 395 1.1 1.0 1.0 .9 1.1 .2 .5 .4 .3 .6 -- *1,480 *1,580 *1,430 *1,600 *1,520 361 356 350 375 370 0 0 0 0 0 2,440 2,500 2,440 2,570 2,640 8.1 24 -- 8.2 24 -- 8.1 26 -- 8.1 28 -- 7.9 27 -- uly 22 Wig. 25 ;ept. 25 )ct. 28 gov. 20 2.7 -- 6.6 2 2.2 30 32 27 32 39 .00 .00 .00 .00 .00 -- -- -- -- -- 30 44 40 48 56 77 66 55 63 67 519 506 458 506 651 1,028 1,020 808 992 1,348 0 0 35 0 0 50 36 42 48 53 440 420 393 435 473 1.3 1.4 1.1 .9 1.2 1.8 1.8 .5 .5 .2 -- -- *1,700 *1,620 *1,540 *1,620 *1,786 392 382 326 379 415 0 0 0 0 0 2,780 2,700 2,450 2,740 2,920 8.1 28 -- 8.1 30 -- 8.5 27 70 8.2 26 55 8.1 25 45 Dec. 23 an. 11,1965 'eb. 8 May 4 une 7 4.28 1.67 1 -- 1.5 34 30 32 28 37 .02 .02 .02 .08 .00 -- -- -- -- -- 20 38 40 58 78 71 67 61 83 91 528 536 533 799 727 862 940 736 1,174 1,196 51 35 87 26 0 45 58 6.0 88 188 460 455 470 795 688 1.0 1.3 1.0 1.5 1.2 .0 .5 .3 1.3 1.2 *1,630 *1,670 *1,610 *2,550 *3,880 342 370 261 485 568 0 0 0 0 0 2,750 2,840 2,700 3,970 3,880 8.6 21 35 8.5 22 40 8.9 26 10 8.3 28 40 8.1 27 15 uly 9 Sept. 9 gov. 10 Dec. 2 'an. 4, 1966 .31 e.5 15 12 -- 42 34 26 28 28 .02 -- .00 -- .00 -- .02 -- .02 0.00 68 42 40 50 84 88 100 43 51 32 738 835 281 410 347 1,354 1,350 396 696 696 14 0 14 0 30 10 20 112 136 78 700 850 298 362 278 1.2 1.3 .8 1.0 .6 2.1 1.8 1.4 1.3 .3 *2,370 *2,581 *1,010 *1,380 *1,230 532 516 277 334 341 0 0 0 0 0 3,910 4,380 1,720 2,310 2,010 8.3 27 20 8.1 29 70' 8.4 25 -- 8.1 22 -- 8.5 24 40 an. 14 an. 31 vlar. 3 \pr. 6 vlay 2 180 48 14 10 10 23 27 29 29 29 .05 .03 .00 .00 .02 .00 .00 .00 .00 .00 24 48 32 80 56 28 51 54 39 49 159 350 437 442 432 358 752 820 906 858 0 12 12 0 14 32 60 60 64 56 136 274 350 362 350 .6 .9 .6 .6 .6 .5 3.0 2.9 1.1 1.3 *603 *1,220 *1,400 *1,480 *1,430 175 330 302 360 341 0 0 0 0 0 1,030 2,020 2,330 2,400 2,350 7.6 24 70' 8.3 24 3 8.3 26 10 8.2 26 20 8.3 28 15 une 3 uly 7 uly 29 lug. 30 iept. 30 12.5 7.24 10 6.9 11.5 32 31 32 32 27 .00 .01 .02 .01 .01 .00 .00 .00 .00 .00 48 56 60 48 40 55 56 52 58 41 385 434 492 482 349 894 936 944 936 678 22 0 0 0 0 54 62 90 100 60 250 340 400 378 288 .9 .9 .6 .9 1.2 3.1 .2 .3 .3 1.4 *1,524 *1,500 *1,600 *1,570 *1,160 346 370 364 358 268 0 0 0 0 0 2,490 2,540 2,580 2,520 1,930 8.5 27 15 8.0 28 30 8.2 28 30 8.0 29 5 8.0 28 50 Nov. 2 Nov. 30 Dec. 28 Feb. 1, 1967 Aar. 7 -- 15 8 19 -- 10.2 30 30 29 30 30 .00 .02 .02 .00 .00 .00 .00 .00 .00 .00 56 54 56 48 52 58 48 63 57 38 424 444 384 452 484 886 906 854 922 932 0 0 0 0 0 62 52 68 64 62 358 351 325 362 358 .9 .8 .9 .7 .9 2.3 6.1 3.0 4.3 2.0 *1,440 *1,420 *1,410 *1,500 *1,480 378 332 398 354 764 0 0 0 0 0 2,410 2,440 2,300 2,460 2,470 7.9 -- 30 7.9 24 20 7.8 23 -- 8.0 24 -- 8.2 -- -- * Residue on evaporation at 180°C. e Estimated mw . m „.„ o• c (1) a 0 • 0 a O CU 0 la) 0 0 ,•.. • c .• '0 --<- •.' :1 '. (T) •-< :' N N w W.... t,.--. •-• co v o -0,,,,.!--, .- (0 ,- 0, (.0m co , c....) v v., i c„,, 1 . GO . . (1, ,-. rs.), wrvw .-wwww ,,, ,,,...,,,,..-(0, ( i 0 ilb ibbbb O -.-,...o Obb O*0 Zobb 000 00000 N ci, yr 1,-, . .C. .1, .0. CO a, ,0000N cr, c." c) .+=. c^ c^ (7' a, 0, NJ .-. .0. 0 CO CI LO cf1.0. -4 CP C0,1Cr, N or.o m.,,,,,, comm.. 0,,...... w-od,a,. .LD 4, U, .0 . ...-. .-- LID CT) .-• Ca LO CD CO Cr, tv .o. CO I, CO 0 CT 0 (,mw (.0 - mmw woomo ....,- .... N..) v co o 0, N., co ... o v .N... N.> o 0, - 00 (pw .-v ...w .,,,w o,,ovcr, o (.,, O ,r, N.) o o (.,-, o co .---. o .•• .. .- - N., (.0 (..0 .(.0 ... -. - . .. . .N., CD v, 0 A. , 0, CY, CO .O. 01 0 • • . 1111 in 00 -4 c0 ,,,, Date of collection Discharge (gPm) Silica (S102 Iron (Fe) Manganese (Mn) Calcium (Ca, Magnesium (Mg) Sodium ( Na ) Potassium (K) Bicarbonate ( HC 0 3 ) Carbonate (CO3) Sulfate (SO4) Chloride (C1) Fluoride ( F ) Nitrate (NO3) Orthophosphate (PO4) * * * * Dissolved solids 00,,,,, (.,,,,,,,,cflo (.0,0m .-..00N.)m calculated 000 00000 _ Mill i gr ams per l i t er . J.,w4:. .-www... Calcium, N ("I CO 00 01 CO LO CO ,,,,. .-. ,c, Cr. Cf) 0 N CO magnesium Non- N 000 0000. carbonate ,"",-) !`""`)":- as CaCO3 Hardness .- (.,,, v cp 0, Cr, --.1 LO .O. CO CO CP CO CO CD .-- Specific conductance (micromhos at 25°C) pH 0 CD CD CD CD CD 0 CD mwm Lommmm . . . . . . . . .1,o,, --4(..).-wo N.,,,,,,,, Imvmv Temperature ( °C) ( i i (,,,, Footnote 26 2760. Turpentine Run at Mariendal, St. Thomas, V.I. Location.--Lat 18°19' 48", long 64° 52' 58", on left bank, at Mariendal, 1.0 mile upstream from mouth, and 3.3 miles southeast of Fort Christian, Charlotte Amalie. Drainage area.--2.97 sq mi. Records available.--Discharge : January 1963 to April 1969 (Discontinued). Chemical analyses: 1962-66. Gaqe.--Water-stage recorder and V-notch weir in concrete control. Altitude of gage is 40 ft (from topographic map). Extremes.--Maximums and minimums (discharge in gallons per minute, gage height in feet). Annual maximum discharge for years 1963-68 Annual minimum discharge for years 1963-68 Date Time Discharge Gage height Year Date Discharge Gage height Aug. 28, 1963 2230 111,000 3.00 1963 No 1964 No flow all year. 1964 flow Dec. 10, 1965 1230 93,800 2.82 1965 many Oct. 12, 1966 1530 33,500 1.97 1966 days 1967 No flow all 1967 each year 1968 year. July 23, 1968 1530 63,800 3.33 1969 Jan. 26, 1969 2045 199,700 4.61 1963-1969: Maximum discharge 199,700 gpm Jan. 26, 1969 (gage height 4.61 ft); minimum discharge no flow many days each year. Remarks.--No flow during calendar years 1964 and 1967. Discharge in thousand gallons per day, calendar year 1963 Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1 0 0 0 0 465 0 0 0 73 0 0 0 2 0 200 0 0 48 0 0 121 14 0 0 0 3 0 0 0 0 5 0 0 0 0 0 0 0 4 60 0 0 0 0 0 0 0 0 0 0 0 5 0 0 0 0 0 0 0 0 0 0 0 0 6 0 0 0 0 0 0 284 0 410 0 0 0 7 0 0 0 30 0 0 632 0 290 0 0 0 8 0 0 0 103 0 0 26 0 124 0 0 0 9 0 0 0 205 800 0 0 150 76 0 0 0 10 0 0 0 66 218 0 0 0 24 0 0 0 11 0 0 0 6 219 0 0 0 7 0 0 0 12 0 0 0 0 564 0 0 0 11 0 0 0 13 0 0 0 0 1,350 0 0 0 0 0 0 0 14 0 0 0 0 885 0 0 0 0 0 0 0 15 20 0 0 0 342 0 0 0 25 0 0 0 16 0 0 0 7 207 0 0 0 34 0 0 0 17 0 0 0 24 182 0 0 0 0 0 0 0 18 0 0 0 0 1,570 0 0 0 0 0 0 0 19 0 0 0 0 518 0 0 0 5 0 0 0 20 0 0 0 0 199 0 0 0 0 0 0 0 21 0 0 0 0 90 0 0 0 0 0 0 0 22 0 0 0 0 39 0 0 0 0 0 0 0 23 0 0 0 0 18 0 0 0 0 0 112 0 24 0 0 0 0 7 0 0 0 0 0 1 0 25 0 0 0 0 7 0 0 0 0 0 0 0 26 0 0 550 0 0 0 0 0 0 0 0 0 27 0 0 0 0 0 0 0 0 0 0 37 0 28 0 0 0 0 0 0 0 7,120 0 0 0 0 29 0 -- 0 0 0 0 0 7,490 0 0 0 0 30 0 -- 0 2,070 0 0 0 985 0 0 0 0 31 0 -- 0 -- 0 -- 0 272 -- 0 -- 0 Total 80 200 550 2,511 7,733 0 942 16,138 1,093 0 150 0 Mean 2.58 7.14 17.7 83.7 249 0 30.4 521 36.4 0 5.00 0 Max 60 200 550 2,070 1,570 0 632 7,490 410 0 112 0 Min 0 0 0 0 0 0 3 0 0 0 0 Year 1963 : Total 29,397 Mean 80.5 Max 7,490 Min 0 5 10 15 20 25 30 27 Discharge in thousand gallons per day, calendar year 1965 Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1 2 3 4 0 0 0 0 0 0 0 0 2,700 8,510 0 0 0 0 0 6 7 8 9 0 0 0 0 1,730 478 113 9 0 0 0 0 0 0 13,790 11 12 13 14 0 0 0 0 0 0 0 0 0 0 10,890 4,820 3,110 1,140 502 16 17 18 19 0 0 0 0 2,340 0 0 0 0 0 182 106 24 1 0 21 22 23 24 357 175 8 0 0 0 0 0 0 0 0 0 0 1,270 53 26 27 28 29 -- -- 0 0 0 0 0 766 86 22 0 0 262 140 90 48 6 31 -- -- -- -- 0 -- 0 Total Mean Max Min 0 0 0 0 0 C 0 0 0 2,880 92.9 2,340 0 14,414 480 8,510 0 36,434 1,175 13,790 0 Year 1965: Total 53,728 Mean 147 Max 13,790 Min 0 5 10 15 20 25 30 -- -- 1 2 3 4 6 7 8 9 31 28 Discharge in thousand gallons per day, calendar year 1966 Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 0 0 0 0 0 0 0 0 0 11 12 13 14 16 17 18 19 21 22 23 24 26 27 28 29 00 0 0 0 00 0 0 0 0 0 0 COLC) 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 v.-. CI t•-•, CO V. V) Cs1 ,—I 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1,650 0 0 5,170 0 0 1,550 0 0 1,490 0 0 548 0 0 236 0 0 332 0 0 194 0 0 63 0 0 18 0 0 6 69 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 222 0 0 8 0 -- 0 0 0 -- 0 -- -- -- 0 Total 2,194 0 72 0 0 0 0 0 230 11,457 0 0 Mean 70.8 2.32 7.67 370 Max 1,410 69 222 5,170 Min 0 • 1•111IND 0 0 0 41 Year 1966: Total 13,953 Mean 38 2 Max 5,170 Min 0 5 10 15 20 25 30 29 Discharge in thousand gallons per day, calendar year 1968 Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1 0 0 0 0 1,360 2 0 0 0 0 703 3 0 0 0 0 189 4 0 8 0 0 128 0 0 0 0 29 6 0 0 0 0 157 7 0 1,280 0 0 7 8 0 3,380 89 0 0 9 0 245 0 0 0 0 43 0 0 0 11 0 1 0 0 0 12 0 33 0 0 0 13 0 0 0 0 0 14 0 0 0 0 0 0 0 0 0 0 16 0 0 0 0 0 17 0 0 0 0 0 18 0 0 0 0 0 19 0 0 0 0 0 0 0 0 0 0 21 2,290 0 0 0 0 22 46 0 0 0 0 23 9,100 0 0 0 0 24 1,460 0 0 0 0 5 0 0 0 0 26 0 0 0 0 0 27 0 2 0 363 0 28 39 0 0 129 0 29 1 0 0 450 0 -- 0 0 0 873 0 31 -- -- -- 0 0 -- -- 0 Total 0 0 0 0 0 0 12,941 4,992 89 0 1,815 2,573 Mean 417 161 2.97 60.5 83.0 Max Min 9,100 0 3,380 0 89 0 873 0 1,360 0 Year 1968: Total 22,410 Mean 61.2 Max 9,100 Min 0 30 Discharge in thousand gallons per day, calendar year 1969 Day 1 2 3 4 5 Jan 0 0 0 12 17 Feb 0 0 0 0 0 Mar 11,490 788 358 208 159 Apr 0 0 0 0 0 May June July Aug Sept Oct Nov Dec 6 7 8 9 10 0 0 0 0 0 0 0 0 0 0 139 56 32 11 0 0 0 0 0 0 11 12 13 14 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16 17 18 19 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21 22 23 24 25 0 0 0 181 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 26 27 28 29 30 31 18,940 14,260 2,430 849 306 0 0 0 3,790 -- -- -- 0 0 0 0 0 0 0 0 0 Disc. -- -- -- -- Total Mean Max Min 36,995 3,790 13,241 Year 1969 CHEMICAL ANALYSIS Orthophospha te ( PO4 ) Dissolved solids calcula ted Hardness as CaCO3 Ca lcium, magnesium ' ru cO 0 x .). 0 Specific conducta nce (microm hos a 2 5 'Cl a Temperature ( CC) Color Milligrams per liter Date of collection Discharge (gpm ) ^ 6 FA u 6:3 Iron ( Fe ) 1 Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) i [ Sodium ( Na ) Pota ssium ( K ) Bicarbonate ( HCO3 ) - Sulfate ( S04 1 Chloride ( Cl) Fluoride ( F ) c7 11' ,5 , ... 2 2o0 -, -E.'to - o _ )ec. 18, 1962 an. 13, 1963 2 3 27 31 0.00 -- .02 -- 37 46 41 39 478 459 888 888 0 0 57 56 360 342 1.0 1.1 2.9 2.8 -- -- -- * 1,430 261 276 0 0 2,460 8.2 26 -- 2,420 8.0 24 -- Web. 21 -- 18 .10 -- 48 38 519 900 16 59 408 1.2 .2 -- * 1,590 276 0 2,570 8.3 24 -- pr. 8 -- 296 -- vIay 16 -- 170 -- kay 20 155 -- -- 160 -- Wg. 28 2,564 20 .10 -- 28 33 272 522 0 46 225 .7 1.0 -- -- 206 0 1,530 7.4 25 -- Oct. 20, 1965 6,257 13 .05 -- 18 13 85 144 0 45 82 .5 1.5 -- * 430 98 0 594 7.2 24 0' Oct. 20 3,209 10 .05 -- 24 17 158 190 0 128 128 .6 2.7 -- * 569 130 0 848 7.3 24 0 4 Nov. 5 3,330 21 .18 -- 20 18 117 182 0 48 122 .5 7.2 -- ' 450 124 0 791 7.8 25 -- )ec. 10 )ct. 13, 1966 -- 956 18 21 .040.00 .03 .00 18 28 25 27 50 199 172 370 0 0 26 44 59 185 .3 .7 5.2 1.8 -- -- ' 319 * 703 148 181 7 0 530 7.7 -- ' 1,220 7.7 29 0 * Residue on evaporation at 180°C. 31 POND STAGE AND DISCHARGE STATION 2720. Hoffman Pond at Hoffman, St. Thomas, V.I. Location.--Lat 18° 20' 18", long 64° 53' 54', in pond at right end of earthen dam, 300' upstream on tributary to Turpentine Run, 0.5 mile upstream of Tutu-Red Hook road junction, 2.2 miles east of Fort Christian, Charlotte Amalie. Drainage area.--0.13 sq mi. Records available.--Stage: Daily stage at 2400 hours, November 1962 to April 1969. Discharge: Maximum discharge 59,000 gpm, March 1, 1969 (gage height 7.10 ft) computed flow over dam. Occasional low-stage measurements, May 1963 to November 1965. Chemical analyses: 1962-68. Gaqe.--Water-stage recorder with Parshall flume set in concrete control. Altitude of gage is 200 ft (from topographic map). Remarks. --Compacted earthen dam. Spillway on bedrock has concrete broad-crested weir. No means of discharging contents. Pond is used for stock watering. Gage height, in feet calendar year 1962 June July Aug. Sept. Oct. Nov. Dec. -- -- -- -- -- -- 4.06 -- -- -- -- -- 4.04 -- -- -- -- -- -- 4.01 -- -- -- -- -- -- 3.98 -- -- -- -- -- -- 3.95 6 -- -- -- -- -- -- -- -- -- -- -- -- 3.93 3.91 8 9 -- -- -- -- -- -- -- -- -- -- ---- 3.88 3.88 10 -- -- -- -- -- -- 3.85 11 12 13 14 15 -- -- -- __ -- -- -- -- __ -- -- -- -- __ -- -- -- ---- -- -- -- -- -- -- -- -- 4.53 4.50 4.47 3.84 3.81 3.79 3.77 3.75 16 -- -- -- -- -- 4.44 3.73 17 -- -- -- -- -- 4.40 3.67 16 19 __ __ __ __ __ __ -- __ ---- 4.38 4.35 3.65 3.65 20 -- -- -- -- -- 4.32 3.62 21 -- -- -- -- -- 4.29 3.60 22 __ -- -- __ -- 4.28 3.68 23 __ __ __ __ -- 4.25 3.65 24 -- -- -- -- -- 4.24 3.63 25 -- -- -- -- -- 4.21 3.61 26 __ __ -- -- -- 4.18 3.60 27 -- -- -- -- -- 4.16 3.58 28 -- -- -- -- -- 4.13 3.56 29 -- -- -- -- -- 4.11 3.54 30 -- -- -- -- -- 4.09 3.52 31 -- -- 3.52 -- -- -- -- -- 4.09 3.52 -- -- -- -- -- -- -.57 Max -- -- -- -- -- 4.53 4.06 Min -- -- -- -- -- 4.09 3.52 +Gage height, in feet, at end of month. * Change in gage height. 32 Gage height, in feet, calendar year 1963 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. De-:. 3.51 3.06 -- 2.53 3.90 5.38 4.53 4.32 5.75 5.41 4.71 -- 3.49 3.24 -- 2.52 3.92 5.35 4.51 4.44 5.73 5.38 4.69 -- 3.52 3.24 -- 2.48 3.91 5.32 4.48 4.44 5.72 5.36 4.67 -- 3.55 3.22 -- 2.46 3.88 5.29 4.46 4.42 5.69 5.32 4.64 -- 3.53 3.20 -- 2.46 3.84 5.25 4.42 4.39 5.70 5.29 4.61 -- 3.51 3.18 -- 2.47 3.85 5.23 4.62 4.38 5.83 5.27 4.62 -- 3.48 3.15 -- 2.63 3.83 5.20 4.78 4.35 5.80 5.24 4.59 -- 3.45 3.13 -- 2.91 3.81 5.17 4.82 4.39 5.80 5.23 4.57 -- 3.42 3.11 -- 3.22 4.39 5.13 4.80 4.77 5.79 5.20 4.60 -- 3.39 3.09 -- 3.36 4.57 5.10 4.77 4.82 5.77 -- 4.58 -- 3.41 3.07 -- 3.39 4.87 5.07 4.74 4.82 5.77 -- 4.55 -- 3.40 3.05 2.50 3.39 5.37 5.04 4.71 4.79 5.74 -- 4.54 -- 3.37 3.03 2.48 3.37 -- 4.99 4.69 4.77 5.73 -- 4.51 -- 3.37 3.01 2.45 3.35 -- 4.95 4.66 4.74 5.70 -- 4.49 -- 3.36 -- 2.42 3.32 -- 4.90 4.63 4.70 5.73 -- 4.47 -- 3.35 -- 2.40 3.29 5.76 4.86 4.62 4.68 5.71 -- 4.42 -- 3.37 -- 2.38 3.31 5.78 4.82 4.62 4.65 5.69 -- 4.40 -- 3.35 -- 2.36 3.28 5.80 4.81 4.58 4.62 5.70 -- 4.37 -- 3.34 -- 2.34 3.23 5.78 4.77 4.56 4.59 5.69 -- 4.39 -- 3.31 -- 2.32 3.20 5.75 4.74 4.53 4.59 5.66 -- 4.38 -- 3.28 -- 2.30 3.17 5.74 4.71 4.49 4.57 5.63 -- 4.39 -- 3.25 -- 2.27 3.14 5.72 4.69 4.47 4.54 5.60 -- 4.35 -- 3.24 -- 2.24 3.11 5.69 4.66 4.44 4.53 5.56 -- 4.47 -- 3.22 -- 2.21 3.09 5.67 4.63 4.41 4.51 5.53 4.87 4.47 3.88 3.20 -- 2.44 3.06 5.64 4.59 4.37 4.46 5.50 4.84 4.44 3.89 3.16 -- 2.56 3.04 5.60 4.57 4.34 4.43 5.52 4.82 4.42 3.89 3.15 -- 2.60 3.02 5.55 4.53 4.32 4.59 5.52 4.84 4.46 3.88 3.12 -- 2.59 2.99 5.52 4.55 4.29 6.08 5.49 4.82 -- 3.87 3.10 -- 2.56 2.96 5.49 4.52 4.25 5.83 5.45 4.79 -- 3.86 3.08 2.53 3.77 5.45 4.56 4.22 5.79 5.43 4.76 -- 3.84 3.06 2.53 5.42 4.30 5.77 4.74 3.81 + 3.06 -- 2.53 3.77 5.42 4.56 4.30 5.77 5.43 4.74 -- 3.81 -.46 -- -- 1.24 1.65 -.86 -.26 1.47 -.34 -.69 -- -- Max 3.55 -- 2.60 3.77 5.80 5.38 4.82 6.08 5.83 5.41 4.71 -- Min 3.06 -- 2.21 2.46 3.81 4.52 4.22 4.32 5.43 4.87 4.35 -- + Gage height, in feet, at end of month. Change in gage height. -4 " ti) ''' ") ") N a' O) ,2` , 1`.-'2, `,`-i 711 1,1 `43, `,:, gl 2 N NNN M R R R 2tO,--i 5 10 15 20 25 30 33 Gage height, in feet, calendar year 1964 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 3.82 -- -- -- 1.54 0.87 0.31 -- -0.78 -1.26 -1.72 -- 1 2 3.81 -- 2.71 -- 1.51 .85 .30 -- - .81 -1.29 -1.73 -- 3 3.79 -- 2.70 2.03 1.48 .82 .30 -- - .85 -1.31 -1.74 -- 3.78 -- 2.67 2.00 1.45 .80 .29 -- - .87 -1.34 -1.76 -- 4 3.75 -- -- 1.97 1.42 .78 .26 -- - .90 -1.36 -1.78 -- 6 3.73 -- -- 1.97 1.40 .75 .24 -0.36 - .93 -1.39 -1.80 -- 7 3.70 -- -- 1.97 -- .72 .22 - .39 - .95 -1.42 -1.82 -- 3.70 -- -- 1.96 -- .68 .19 - .43 - .98 -1.44 -1.84 -- 8 9 3.69 -- -- 1.93 -- .65 .16 - .45 -1.00 -1.46 -1.61 -- 3.67 -- -- 1.90 -- .62 -- - .47 -1.03 -1.48 -1.60 -- 3.66 -- -- 1.87 -- .58 -- - .49 -1.06 -1.50 -1.62 -- 11 12 3.67 -- -- 1.89 1.21 .55 -- - .51 -1.08 -1.52 -1.63 -- 13 3.67 -- -- 1.89 1.18 .52 -- - .54 -1.10 -1.54 -1.65 -- 14 3.66 -- -- 1.87 1.17 .49 -- - .56 -1.13 -1.56 -1.66 -- 3.65 -- -- 1.85 1.14 .46 -- - .59 -1.15 -1.58 -1.68 -- 16 3.62 -- -- 1.82 1.12 .44 -- - .61 -1.18 -1.61 -1.70 -- 17 3.59 -- -- 1.82 1.10 .41 -- - .64 -1.20 -1.61 -1.72 -- 18 3.56 -- -- 1.80 1.08 .38 -- - .67 -1.20 -1.63 -1.75 -- 19 3.53 -- -- 1.77 1.05 .36 -- - .68 -1.23 -1.65 -1.77 -- 3.54 -- h2.38 1.81 1.02 .34 -- - .70 -1.24 -1.66 -1.79 -- 21 3.51 -- -- 1.82 .99 .32 -- - .71 -1.22 -1.68 -1.81 -- 22 3.48 -- -- 1.81 .96 -- -- - .73 -1.17 -1.55 -1.82 -- 23 3.46 -- h2.31 1.78 .94 -- -- - .71 -1.19 -1.57 -1.85 h-2.27 24 3.42 -- -- 1.74 .93 -- -- - .74 -1.20 -1.59 -1.85 -- 3.40 -- -- 1.71 .90 -- -- - .76 -1.18 -1.60 -1.82 -- 26 3.37 -- h2.21 1.68 .87 -- -- - .78 -1.20 -1.62 -1.83 -- 27 3.34 -- -- 1.65 .98 -- -- - .80 -1.22 -1.64 -- -- 28 3.31 2.76 -- 1.63 .96 -- -- - .70 -1.23 -1.65 -- -- 29 3.28 -- -- 1.60 .93 .29 -- - .72 -1.22 -1.67 -- -- -- -- 1.57 .90 .25 -- - .73 -1.24 -1.68 -- -- 31 -- -- .88 -- - .75 -1.70 -- + -- -- -- 1.57 .88 .25 -- - .75 -1.24 -1.70 -- -- -- - .49 - .46 -- -- Max 3.82 -- -- 2.03 1.54 .87 -- - .36 - .78 -1.26 -1.60 -- 3.28 -- .88 Min -- 1.57 .25 -- - .80 -1.24 -1.70 -1.85 -- +Gage height, in feet, at end of month. Change in gage height. hStaff gage reading. 5 10 15 20 25 30 __ _ __ 34 Gage height, in feet, calendar year 1965 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 -- -- „ -- -- -- -- -- -- -- -- 0.65 5.67 11_3 36 2 -- -- . -- -- -- -- -- -- -- .66 5.63 3 -- -- -- -- -- -- -- -- -- -- .64 5.58 _ _ h _4 50 __ 4 h -2.45 -- -- . -- -- -- h -4.51 2.83 5.59 -- -- -- -- -- -- -- -- -- -- 5.83 5.55 6 -- -- -- -- -- -- -- -- -- -- 5.78 5.52 7 -- -- -- h -4.12 -- h -3.09 h -3.71 h -4.80 -- -- 5.76 5.48 8 -- h -2.94 h -3.51 -- -- -- -- -- -- -- 5.75 5.46 9 -- -- -- -- -- -- -- -- h -4.62 -- 5.73 5.43 -- -- -- -- h -3.22 -- -- -- -- -- 5.70 5.88 11 h -2.56 -- -- -- -- -- -- -- -- -- 5.67 5.93 12 -- -- -- -- -- -- -- -- -- -- 5.65 5.82 13 -- -- -- -- -- -- -- -- -- -- 5.62 5.82 _ ., 27 " _3 14 -- -- -- -- . -- -- -- -- 5.58 5.79 -- h -3.05 -- -- -- -- -- -- -- h -4.69 5.59 5.76 16 -- -- -- -- -- -- -- -- -- -- 5.56 5.74 17 -- -- -- -- -- -- -- -- -- -- 5.52 5.73 18 -- -- -- -- h -3.10 -- -- -- -- -- 5.52 5.72 _ 19 -- -- -- -- -- -- -- -- -- 5.48 5.71 -- -- -- -- -- -- -- -- -- -0.16 5.43 5.67 21 -- -- -- -- -- h -3.42 -- -- -- .44 5.40 5.64 22 -- -- -- -- -- -- -- -- .68 5.37 5.61 23 -- h-3.19 -- -- -- -- -- .79 5.57 -- -- h -3.15 5.33 24 -- -- -- -- -- -- -- -- -- .81 5.28 5.78 -- -- -- -- -- -- -- -- -- .81 5.56 5.77 26 -- -- -- h -4.60 -- -- -- -- -- .79 5.79 5.75 27 -- -- -- -- -- -- -- -- -- .78 5.77 5.74 28 -- -- -- -- -- -- __ -- -- .75 5.75 5.73 29 -- -- -- -- -- h -3.87 -- -- -- .72 5.73 5.72 -- h -4.04 -- -- -- -- -- -- .70 5.70 5.70 31 -- -- -- -- -- .68 5.67 + -- -- h -4.04 -- -- -- -- -- -- .68 5.70 5.67 $ -- -- -- -- -- __ -- __ 5.02 -.03 Max -- -- -- -- -- -- -- -- -- 5.83 5.93 Min -- -- -- -- -- -- -- -- -- -- .64 5.43 +Gage height, In feet, at end of month. tChange in gage height. hStaff gage reading. 5 10 15 20 25 30 35 Gage height, in feet, calendar year 1966 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 3 4 5.63 5.62 5.61 5.57 5.54 5.40 5.36 5.33 5.29 5.24 4.39 4.35 4.31 4.31 4.28 4.35 4.32 4.27 4.23 4.18 3.60 3.60 3.56 3.52 3.48 2.70 2.65 2.62 2.58 2.57 1.78 1.75 1.73 1.69 1.65 1.13 1.09 1.09 1.06 1.03 0.41 .38 .34 .31 .29 0.48 .50 .49 .47 .44 5.28 5.24 5.20 5.18 5.14 4.46 4.45 4.44 4.49 4.50 6 7 8 5.52 5.47 5.43 5.21 5.16 5.11 4.25 4.21 4.17 4.15 4.12 4.07 3.45 3.42 3.39 2.54 2.52 2.48 1.62 1.58 1.55 .99 .95 1.00 .26 .29 .27 .41 .38 .44 5.11 5.07 5.03 4.54 4.53 4.51 9 5.39 5.35 5.04 4.99 4.15 4.21 4.03 3.99 3.41 3.38 2.44 2.42 1.51 1.47 .97 .95 .26 .41 .51 .50 5.02 5.05 4.48 4.45 11 12 13 14 5.32 5.31 5.80 5.75 5.73 4.96 4.92 4.90 4.86 4.84 4.18 4.17 4.15 4.12 4.09 3.94 3.89 3.86 3.85 3.95 3.37 3.34 3.30 3.26 3.22 2.38 2.35 2.30 2.27 2.29 1.44 1.45 1.43 1.42 1.40 .92 .88 .85 .86 .83 .45 .41 .38 .38 .35 1.78 5.40 5.79 5.78 5.75 5.00 4.98 4.94 4.91 4.87 4.43 4.40 4.37 4.34 4.33 16 5.72 4.82 4.07 3.92 3.18 2.28 1.42 .80 .32 5.75 4.83 4.30 17 18 19 5.7 1 5.69 5.66 5.63 4.81 4.79 4.77 4.72 4.04 4.05 4.15 4.28 3.89 3.92 3.97 3.99 3.15 3.13 3.12 3.10 2.25 2.23 2.19 2.15 1.40 1.37 ?.34 1,37 .77 .73 .70 .67 .30 .27 .25 .23 5.74 5.73 5.70 5.68 4.80 4.77 4.74 4.71 4.27 4.24 4.21 4.19 21 22 5.59 5.55 4.69 4.65 4.37 4.58 3.96 3.92 3.07 3.04 2.12 2.08 1.33 1.41 .65 .65 .20 .20 5.66 5.63 4.69 4.68 4.16 4.13 23 24 5.51 5.47 5.43 4.61 4.51 4.53 4.64 4.63 4.60 3.87 3.83 3.78 3.01 2.97 2.93 2.05 2.02 2.00 1.40 1.37 1.33 .62 .58 .55 .18 .17 .15 5.60 5.56 5.52 4.69 4.70 4.66 4.20 4.24 4.24 26 27 28 29 5.38 5.34 5.34 5.39 4.49 4.46 4.42 -- 4.57 4.53 4.50 4.47 3.75 3.71 3.69 3.66 2.89 2.88 2.85 2.82 1.96 1.92 1.88 1.86 1.31 1.28 1.25 1.19 .58 .55 .57 .53 .11 .11 .43 .58 5.48 5.46 5.45 5.41 4.63 4.59 4.55 4.52 4.21 4.19 4.17 4.14 31 5.42 5.42 4.43 4.39 3.62 2.78 2.74 1.82 1.15 1.15 .48 .45 .50 5.37 5.32 4.49 4.11 4.09 + t 5.42 -.25 4.42 -1.00 4.39 -.03 3.62 -.77 2.74 -.88 1.82 -.92 1.15 -.67 .45 -.70 .50 .05 5.32 4.82 4.49 -.83 4.09 -.40 Max Min 5.80 5.31 5.40 4.42 4.58 4.04 4.35 3.62 3.01 2.74 2.70 1.82 1.78 1.15 1.13 .45 .58 .11 5.79 .38 5.28 4.49 4.53 4.09 +Gage height, in feet, at end of month. Change in gage height. 5 10 15 20 25 30 36 Gage height, in feet, calendar year 1967 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 3 4 4.06 4.03 4.01 3.98 3.94 3.33 3.30 3.28 3.25 3.22 2.70 2.66 2.63 2.60 2.57 1.77 1.76 1.72 1.68 1.65 0.95 1.12 1.32 1.37 1.36 0.56 .50 .46 .43 .41 -0.29 - .33 - .36 - .40 - .43 -1.07 -1.10 -1.13 -1.16 -1.19 -1.89 -1.91 -1.94 -1.97 -- -2.61 -2.63 -2.66 -2.68 -2.71 -1.99 -2.00 -2.03 -2.06 -2.08 -2.51 -2.53 -2.57 -2.62 -2.63 6 7 8 9 3.91 3.88 3.85 3.82 3.79 3.19 3.15 3.12 3.11 3.08 2.52 2.50 2.46 2.42 2.39 1.62 1.59 1.56 1.53 1.49 1.34 1.31 1.29 1.25 1.22 .38 .34 .30 .27 .24 - .48 - .48 - .50 - .53 - .56 -1.21 -1.24 -1.26 -1.30 -1.34 -2.74 -2.76 -2.78 -2.82 -2.47 -2.08 -2.11 -2.13 -2.14 -2.16 -2.66 -2.68 -2.64 -2.65 -2.67 11 12 13 14 3.76 3.73 3.70 3.68 3.65 3.05 3.03 3.00 2.97 2.99 2.36 2.34 2.31 2.27 2.25 1.46 1.43 1.38 1.35 1.30 1.18 1.17 1.15 1.11 1.07 .21 .19 .16 .14 .09 - .59 - .61 - .61 - .62 - .66 -1.35 -1.33 -1.37 -1.40 -1.44 -2.11 -2.13 -2.15 -2.17 -2.20 -2.15 -2.16 -2.18 ---- -2.22 -2.69 -- -2.71 -2.73 -2.75 16 17 18 19 3.63 3.71 3.69 3.66 3.64 3.03 3.00 2.97 2.94 2.91 2.22 2.18 2.15 2.12 2.08 1.26 1.22 1.19 1.17 1.14 1.08 1.05 1.02 .99 .96 .07 .08 .08 .05 .04 - .68 - .71 - .74 - .77 - .81 -1.46 -1.49 -1.53 -1.55 -1.59 -2.23 -2.26 -2.29 -2.30 -2.33 -1.88 -1.87 -1.88 -1.90 -1.92 -2.24 -2.26 -2.28 -2.30 -2.33 -2.77 -2.79 -2.81 -2.84 -2.86 21 22 23 24 3.61 3.61 3.58 3.56 3.53 2.88 2.85 2.83 2.80 2.77 2.03 2.01 1.98 1.98 1.94 1.11 1.06 1.02 1.02 .98 .93 .90 .86 .85 .81 .00 -.02 -.04 -.08 -.11 - .85 - .86 - .89 - .93 - .95 -1.62 -1.61 -1.64 -1.67 -1.70 -2.36 -2.39 -2.41 -2.44 -2.46 -1.95 -1.97 -1.86 -1.86 -1.87 -2.35 -2.37 -2.40 -2.42 -2.45 -2.89 -2.89 -2.91 -2.93 -2.95 26 27 28 29 31 3.50 3.47 3.45 3.43 3.38 3.35 2.75 2.72 2.72 -- 1.90 1.87 1.83 1.81 1.78 1.80 .93 .90 .87 1.01 .98 .78 .75 .71 .68 .64 .59 -.13 -.15 -.19 -.23 -.25 - .96 - .95 - .98 -1.00 -1.02 -1.03 -1.72 -1.75 -1.78 -1.81 -1.84 -1.86 -2.48 -2.50 -2.54 -2.57 -2.59 -1.87 -1.89 -1.91 -1.93 -1.96 -1.97 -2.44 -2.45 -2.46 -2.48 -2.50 -2.95 -2.95 -2.97 -2.99 -3.00 -3.01 + * Max Min 3.35 -.74 4.06 3.35 2.72 -.63 3.33 2.72 1.80 -.92 2.70 1.78 .98 -.82 1.77 .87 .59 -.39 1.37 .59 -.25 -.84 .56 -.25 -1.03 - .78 - .29 -1.03 -1.86 - .83 -1.07 -1.86 -2.59 - .73 -1.89 -2.59 -1.97 .62 -1.86 -2.82 -2.50 - .53 -1.99 -2.50 -3.01 - .51 -2.51 -3.01 +Gage height, in feet, at end of month. Change in gage height. 37 Gage height, in feet, calendar year 1968 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 3 4 .., -3.02 -3.01 -3.03 -3.06 -3.05 -3.44 -3.47 -3.49 -3.52 -3.54 -3.69 -3.72 -3.75 -3.76 -3.78 -4.09 -4.03 -4.05 -4.08 -4.11 -4.59 -4.61 -4.63 -4.66 -4.68 -3.87 -3.84 -3.86 -3.81 -- 3.08 3.05 3.04 3.02 2.99 2.21 2.16 2.12 2.14 2.12 1.30 1.27 1.29 1.25 1.22 3.08 3.48 3.59 3.65 3.63 6 78 9 10 ---- -3.09 -3.11 -3.12 -3.56 -3.58 -3.59 ---- -4.14 -4.17 -4.18 -4.22 -4.25 -4.72 -4.75 -4.75 -4.77 -4.80 ---- 3.59 3.80 3.84 2.96 2.93 2.96 2.93 2.89 2.08 2.07 2.05 2.02 1.99 1.17 3.63 3.63 3.61 3.59 3.56 11 13 14 15 -3.13 -3.14 -3.16 - 3 .19 -1.19 -- -3.66 -3.66 -3.70 -3 .72 -3.94 -3.95 -3.98 -4.00 -4.03 -4.27 -4.28 -4.30 -4.29 -4.31 -4.83 -4.86 -4.86 ---- ---- 3.83 3.80 3.77 3.73 3.70 2.84 2.81 2.77 2.76 2.73 1.96 1.92 1.88 1.84 1.81 1.02 1.09 3.53 3.50 3.47 3.46 3.43 if 17 18 19 20 -3 .29 - 3 ..'2 -3.24 -1.25 -3.24 -3.74 -3.72 -3.73 -1.76 -3,78 -4.04 -4.06 -3.92 -3.88 -3.88 -4.33 -4.36 -4.34 -4.36 -4.38 -5.00 ---- 3.67 3.62 3.57 3.55 3.52 2.69 2.64 2.60 2.56 2.54 1.77 1.74 1.71 1.70 1.68 1.12 1.09 1.05 1.02 1.02 3.41 3.39 3.36 3.31 3.27 21 22 =.4 .5 -3.26 -3.2t, -3.2, -3. '1 •- 3 . 33 -1.8(' -3.8o -;.t.) -, .t ; -3.66 -3.90 -3.92 -3.95 -3.96 -3.98 -4.41 -4.43 -4.46 -4.49 -4.52 -5.04 -5.07 -5.08 -5.10 -5.12 3.48 3.43 3.40 3.37 3.32 2.51 2.47 2.43 2.40 2.37 1.66 1.63 1.60 ---- .99 .99 .95 .94 .91 3.23 3.19 3.15 3.12 3.09 :t3 27 20 :'9 30 Zl -3.35 -3.37 -3.39 -3.41 -3..13 -3.42 I -3.86 -3.64 -3.66 -3.67 -4.09 -4.02 -4.05 -4.07 -4.04 -4.07 -4.55 -4.59 -4.62 -4.64 -4.58 -5.13 -3.88 -3.90 -3.91 3.28 3.28 3.25 3.21 3.18 3.13 2.33 2.30 2.27 2.27 2.25 ---- 1.44 1.40 1.38 1.35 1.02 1,35 1.57 1.89 2.48 3.05 3.03 3.06 3.04 3.01 2.99 - - ... t -3.42 - .41 -1.67 - .25 -4.07 - .40 -4.58 - .51 ---- ---- -3.91 -- 3.13 7.04 2.25 -.88 1.35 -.90 2.48 1.13 2.99 .51 Max M:r. -3.01 -3.43 -3.44 -3.86 -3.69 -4.07 -4.03 -4.64 -4.59 -5.13 ---- ---- 3.84 3.87 3.08 2.25 2.21 1.35 2.48 .91 3.65 2.99 +Gage height, in feet, at enc. of month. Change in gage height. 5 10 15 20 25 30 38 Gage height, in feet, calendar year 1969 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2.96 3.59 6.52 4.82 -- -- -- -- -- __ 2 2.93 3.56 6.43 4.79 -- -- -- -- -- -- -- -- 3 2.92 3.55 6.28 4.76 -- -- -- -- -- -- -- -- 4 2.94 3.51 6.17 4.71 -- -- -- -- -- -- -- -- 2.93 3.46 6.14 4.67 -- -- -- -- -- -- -- -- 6 2.91 3.42 6.06 4.62 -- -- -- -- -- -- -- 7 2.88 3.38 6.02 4.58 -- -- -- -- -- -- -- -- 8 2.84 3.34 5.97 4.54 -- -- -- -- -- -- -- -- 9 2.81 3.32 5.92 4.51 -- -- -- -- -- -- -- 2.77 3.30 5.88 4.46 -- -- -- -- -- -- -- -- 11 2.73 3.26 5.82 4.41 -- -- -- -- -- -- -- -- 12 2.70 3.22 5.77 4.37 -- -- -- -- -- -- -- -- 13 2.68 3.20 5.72 4.33 -- -- -- -- -- -- -- -- 14 2.64 3.17 5.67 4.29 -- -- -- -- -- -- -- -- 2.66 3.14 5.61 4.27 -- -- -- -- -- -- -- -- 16 2.66 3.11 5.55 4.25 -- -- -- -- -- -- -- -- 17 2.63 3.07 5.50 4.21 -- -- -- -- -- -- -- -- 18 2.61 3.08 5.45 4.17 -- -- -- -- -- -- -- -- 19 2.59 3.12 5.40 4.14 -- -- -- -- -- -- -- -- 2.56 3.10 5.35 4.11 __ __ __ __ -- -- -- -- 21 2.54 3.07 5.31 4.07 -- -- -- -- -- __ 22 2.51 3.04 5.27 4.04 -- -- -- -- -- -- -- -- 23 2.48 3.00 5.22 4.00 -- -- -- -- -- -- -- -- 24 2.52 2.97 5.16 3.96 -- -- -- -- -- -- -- -- 2.50 2.93 5.11 3.92 -- -- -- -- -- -- -- -- 26 3.15 2.90 5.06 3.87 -- -- -- -- -- -- -- -- 27 3.52 2.86 5.01 3.82 -- -- -- -- -- -- -- -- 28 3.57 5.34 4.96 3.78 -- -- -- -- -- -- -- -_ 29 3.59 -- 4.92 3.73 -- -- -- -- __ -- -- -- 3.59 4.89 3.68 -- -- -- -- -- -- -- -- 31 3.57 4.86 -- -- -- -- -- + 3.57 5.34 4.86 3.68 -- -- -- -- -- -- -- -- $ .58 1.77 -.48 -1.18 -- -- -- -- -- -- -- -- Max 3.59 5.34 6.52 4.82 -- -- -- -- -- -- -- _- Min 2.48 2.86 4.86 3.68 -- -- -- -- -- -- -- __ +Gage height, in feet, at end of month. Change in gage height. .. C 3. g' g,' g, a c c c c c a K K K .,,7 .,,y .E,'" g. E E g g. .g. ,.,' a. %,,, •-• .,f, ' .,f • K K K ; ,7 7 C.; - .r., Ci Z z Z 2 R R g' ,,, r:, , .: . . g g g `') °(' °' :' 7 7 ? ``) ct F ? 6 ' E: El El cr cr cr. ? ? 2 2 2 2 - :-.. :' :" El E, • • • • • .--, ,.--• Date of ca 1, I.• , r--• Iv .-. G N r., .-.• co ...-. I—. ....I ,,, N --, co gs, ..... ,--. ,....., " I. , s (.0 . ._.., ,....) t..., .- co -... rs, iv tc 1, NJ Le, 01 CO •-• e.,-, (.., 8 <a tv .--• CO iv , u, (.., IV I, .-. CO ,_... cn C-..) (1) . cr, . ciD an. C° C) C° ..-.. .1. --, 0 collection CD .- .- CD ,.., , '-. - 7:1 0 -,. cr, c., 0 co ... .1. to ..._. cn cc.,.. . (D O, a, cr, u, V, ... (..4 0) NJ CD CD ml iti l 0(1' i c, cl,'-' ow c) c) I 1 Discharge (gpm) m i l i j ° : : : ° 'I i i 0 i i : 0 i : : 0 i i 0 i ° : ° : : : 1 ,.... ml i ,...) ,s., , ,.., rs, N.> 1 i , N., ND i 1 I 1 INI I 1 Ni 1 IN 1 I I NI 1 I NI i ..- i iral N.- I 111t 1 1 i co co Silica (S102) NJ CV 1 A la la I I I Ca ,-- 1 I I I I ,-- I li 1-'11 IN I I I col 1 C I CO 1 1 c.0 I C a 1 CD G I I . • • . , , • • ,,,,, ._.,,, ,, ,,, - , • CD ,..-.. 0, .-.• o o , , , o o ! ! ! ! III,' 1 '-' 1 1 (--) 1 .,• -.• 1 1 1 1 1 t 0 c ^ Iron (Fe) 1,...,111 ,iii„,.., N., co N., u, c, o , L, ... " " ,...) o ,r- cc iiiii mil mil iiiii : 1 1 i i till mit 1 1 1 i 1 ',II i Manganese (Mn) 11111 11111 11111 11111 11111 1111 1 11111 11111 IIIII 11111 CO O tol C4 C..., 1, C., ...., O ..,.. , .., .., .., LP ."1 „."' -. , C) I .11„1 II:- 1 ,..)11 . ( . 111 Calcium (Ca 1 .111„ ..,...,-..:-...co co m a., ,,,,, i c,,i, ,,,,., .,,,, , . , , 0.,,,,, (7.,,,,,, , o ,..., o a, v c, u, , N.> u, u, ., i ..,- ...,... ..L. ,,- .... , ,..., -,. c, 1 i .'" 1 , , , 1 . . . . Magnesium (Mg) I .111. .1ii 1 c" i i I -" 1 1 1 . I 111,1 1 1 c.„ 1 I ,i 1,o! ..,_, I 1 coCCIGG ,..._,111,.., O II...,1 iwili ‘,...,..iii, 1 cr, u, .-- .-- 114.1 I -,,IINI N ca I I I I i I N to Sodium ( Na ) I I 1 I c., I 1 I 0-C 1 1 i 0_, 1 I 01 I cn I Cr... I I I 1 I I 00 La .z. t I .4 .1, I i 1 co c I I I I 1 Co I 1 1 l....> I I I (..., I 1 1 I, 1 ,,,,,-. cmcc c,,I,,, , c..., I I I Cr, Potassium ( K 1 N I, I, I, Bicarbonate C N)u .... cs.) Cl 1 , , a N4 tv I O I t.c.iii I .t.Ilicn 111,- 1 I I v 1 1 cc I I a I -.4 ca I I I I C.,1 a, a, .c. ( HCO3 ) I I I .. I I I A I ......) I I W I 1 C../ I ,,,,C, 1 1 .a. , I. ..r, A ... , , , A cr. (1". I al I I A I I .A , , , 1 ; ; ; ; ; ; ; Carbonate , ; 0 o o o c.,_-.....00, oi , lc .oc,o, ,I ,I i I c, ,I i ,I ,= ,I : ,I ..,, . , (CO3) ,_. _ _. ..., NI, .,,,,,,, N.) , , , L,' C.', iN.) . .111. 1,11 .11.1 1,111 III. 1 111COW ,, ,1 1,1 c-c.,111 1 Sulfate (SO4 ) 1,1 1, c111,, cr ,,, 1,111 ,111,,, 111c, 1 I 1,1 1 N. 0,c, c, c, a , c., c" c., C7, Cn 11, Ln Cr , on Cr, Cr Cr,CP Cn Cn .,- cr, cn VI ... A CI, (1" , A A A A .A ..r.. I, (..., •;-, C.r", C., I, Ca Ca C., Co ... J.-. C.., .-- (..../ I., chloride (Cl ) CC 0 fa la , ..1 cc cr, c., cr , '0 CC .C. 0-a, 0 01 la cf, CD Cn G N co N 0 cr• .. (s.. a,co -o. c^ ... .a. •c• .... Co -..4 0 ... a,C a --4 .4 ..., --4 00 --.1 CT, 1 . I 1 I . 1 1 I . I 11.11 .11.1 .. III 1 1 C Fluoride (F) I , , k is..., , I I I 1,111 .1,.. I I I , I I I ,..., I I I I I I I I I I 1. :, .1, ..t. ,N is..) _ ._. .-. ,..- N 1 ,-, :' 1 i t . . 1.111 .111. Ili., t 1 1 1,111 will, 111,1 11,1 1 c,-,1 1,1 (7,111 I I i „ Nitrate (NO3) CCD .... 1 Cn c..0 c.0 1 1 1 .... r...) 1 la 1 I I I I I Orthophosphate ,,,,, I I I I I 11111 11111 11111 I I I I I 11111 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I .,... I I I I I I I I I (PO4) * * * 4 * * Dissolved solids * . -, . , , ,,,,- ,,,-, ,..--i , -, ,-, -,,,, .,,,, ,,,,.- -,,,-• ..... I AI 1 G 1 vI 1 1 1 1 1 1 1 1 1111CO Gill(/' iiiii 1 .t,.. 1 1 I IlliCo tilu,1 I I A1 cc -. C &I calculated C0 C-". CC CC cr, CO Mill i gr am s per l i t er - - tv - Ca CC NJ ON N Ca N ca NN A co la la C11 1.- ,-• .-- .--, Calcium, A .D• A., C../ 14 ,.../ C C.4 W AI (1, .-.. 4.1 C (.../ C/1 1.., J. co .1. co Co co N Ca J. Ca co G C, C ... A. A, NJ CT C, ... C, ... ... .1. 0 CO .1:0 .1.. .11,.. CO Ca N Cr, G OD ... ID .1,. CC CO CO 00 0 CO LLD '-.1 CO C ... ... 4... ... C Cr, magnesium N Ca C. CC Cl , - , No I c. o c, c = I cs., N., © : : : c b-• : 1, c i 0 i I' i ° I i i ° : : : 0 i 1 i 0 i i 0 1 : 0 : 0 0 : i 'I carbonate Hardness asCaCO3 Specific conductance i .-.-. .. .-. ..- O , C CO LC I 1 I ....1 --.1 m , c1, 1 .1,-, 1 1 I ...111Ca 111,01 1 INI 1 (.01 I uDi (.0.- i 1 1 1 <J,C/1 , Ul C.-, Co , co Ca N1 1 1 Ca N ca. , la 1 Ni 1 i NIIIN MN' 1 ical I .- I 1.- 1 •-• cal I I I-.,-. CI, Cr, Cn C CD t.0 1.0 .--. .t.--. co ,-• ca co .1. ..., .1, .-- .-- (micromhos at 25°C) .r.-, ,--. -..... -.... -.., -.., --., I , , --.... ,.., -...., v I , , , , ', III., I, <7 ., cr),,c^I ---)-4,,, , C, cr., C. C. I Ili:, ,,,,, pH I 1 I I i i i i 1 • iii•i 1 1 •cs 1 1 'co 1 i •co 1 • 1 1 1 .., • ,..... N 4-, N t, 1., I., I, I, I., N N I, I, N 1 WC, I..../ WI, (..., I,,..)(44., NI.,,t,c...1f, (...-, ca Co c..., co NJ :a la la co la No co No la c., Ca ra ra ta CC ... .....4 C.' ...•.I •—• ......3 CC c1, ...4 C1 L.., (...I C.0 . I—.. I, A LC C, ...4 .1, IN, N La c cc c..- cc ..- m iv C c.. -4 •-4 co c.c, ,-- Cl -.4 ..- -a c, N -.3 cr, C, -.4 Temperature ( °C) -,,i, ',ill I I I 1 1 ,,,,, ,,,,, , 1 , , , ,,, ... , .,... .,. ...,. iv 1 ..- ...., ,..,, .,..., ••., ...0 v co o.. o 1 '-i (....J C..) I I I C., 1 1 1 C: 1 11111 CO1111 11111 11111 11111 11111 111 I 1 Color __ 40 CHEMICAL ANALYSIS - Milligrams per liter Y.Y o Hardness as CaCO3 Date of lle co ction Discharge (gpm ) Silica ( SiO2 ) a) . L .0 Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na Potassium ( K) Bicarbona te (HCO3 ) Ca rbonate (CO)q Sulfate ( SO4 ) Chloride ( Cl) P Fluoride ( Fl Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calculated Ca lcium, magnesium Non- ca rbonate Specific conducta r (micromhos at 25 ° pH Temperature ( °C) Color ,pr. 26, 1965 4ay 4 4ay 10 4ay 18 /lay 24 0 -- -- 22 22 -- -- .4.05 .02 -- -- -- -- 5.6 6.4 -- 6.3 6.3 -- 42 47 -- 42 42 0 0 2.4 8.8 66 70 0.3 .2 1.3 1.8 -- -- * 225 * 216 34 40 40 42 42 6 -- 8 -- -- 310 -- 320 -- -- 27 7.2 30 -- 29 6.8 27 -- 29 -- 5 -- 15 -- une 7 ane 14 ane 21 ane 29 uly 7 -- -- -- 0 22 -- -- 23 .00 -- .00 -- - -- 7.2 -- 8.0 8.3 -- 8.3 43 -- 44 44 -- 48 0 -- 0 6.0 -- 2.0 72 -- 76 .2 -- .2 1.5 -- .6 -- -- -- * 176 -- *191 52 98 50 50 54 16 -- -- -- 15 336 -- -- -- 342 7.0 28 10 -- 29 -- - 31 -- -- 32 -- 7.0 31 10 uly 12 Ay 19 A ug. 7 Aug. 31 Sept. 9 0 0 -- 23 23 .00 .00 -- -- 7.2 9.6 7.8 7.3 49 52 50 58 0 0 .4 1.6 80 82 .2 .3 -- -- .4 1.0 -- -- -- -- -- -- *213 * 225 80 42 50 48 54 9 -- 6 -- 372 -- 393 - 31 -- 7.2 31 5 -- 36 -- 7.2 29 7 /ct. 1 /ct. 15 )ct. 27 lov. 5 led. 2 -- 0 355 0 -- 22 18 21 -- .00 .05 .02 -- - - -- 7.2 5.6 3.2 -- 7.8 6.8 8.8 -- 50 31 35 -- 50 28 32 -- 0 0 0 .8 2.0 2.8 110 81 58 64 -- .3 .1 .1 -- 1.0 1.2 .9 -- -- -- -- -- * 211 * 150 * 161 50 42 44 9 19 18 372 7.0 29 10 256 6.9 28 -- 270 6.9 27 -- In. 10,1966 In. 14 17 )n. 27 )n. 31 -- -- -- -- 20 18 -- -- .110.00 .09 .00 4.8 7.2 -- -- 3.9 5.8 -- -- 34 29 -- -- 23 34 -- -- 0 0 .8 2.8 -- -- 58 53 70 70 .0 .1 .8 .6 -- -- -- -- -- -- -- -- * 171 *159 -- -- -- 28 42 28 32 28 9 14 -- -- - 240 253 -- -- -- 7.2 -- 60 7.0 2970+ -- 31 -- - 26 -- _ 23 -- Feb. 14 lar. 1 pr. 5 A pr. 27 lay 10 -- 0 -- 19 20 21 .13 .00 .04 .00 .00 .00 4.0 6.4 19 6.3 3.9 6.0 33 37 39 28 28 80 0 0 0 4.0 .8 3.6 56 62 62 .0 .0 1.6 1.6 1.3 -- -- * 165 * 190 * 204 -- 36 32 32 72 13 -- 9 6 252 -- 269 356 6.9 25 70+ -- 29 -- 7.2 29 40 7.6 27 20 lay 26 Ji1ne 27 ily 7 Ji ily 27 A mg. 5 0 -- 0 -- -- 22 22 21 22 23 .02 .00 .02 .00 .03 .00 .03 .00 .00 .00 11 5 6.4 4.8 8.0 5.5 6.2 6.8 5.8 4.9 42 43 40 45 47 49 37 38 40 38 0 0 0 0 0 8.0 8.0 1.2 2.4 13 65 66 71 70 69 .0 .0 .1 .0 .1 1.0 .3 .2 .5 1.2 -- -- -- -- -- * 213 * 181 * 198 * 196 * 206 50 38 44 36 40 10 8 13 0 9 300 286 306 308 314 7.3 29 30 7.2 31 40 6.9 29 30 7.1 -- 20 7.0 -- 5 A lg. 30 Ji in. 30, 1967 F 43. 13 F .13. 27 ar. 14 -- -- -- -- -- 22 22 23 21 21 .02 .06 .03 .00 .00 .00 .00 .00 .00 .00 12 14 8.0 22 5.6 6.3 13 6.3 2.7 4.4 35 25 35 46 42 40 68 38 92 42 0 0 0 0 0 2.4 2.0 2.4 1.6 1.2 69 61 63 63 63 .1 .1 .1 .1 .1 .0 .3 .2 .4 -- -- -- * 198 * 203 * 165 * 205 * 159 56 88 46 66 32 23 32 15 0 0 301 321 282 360 287 7.0 32 7.2 27 6.8 24 7.7 27 7.2 26 10 -- -- -- -- ar. 20 M Ir. 3 A w. 18 ay 8 M May 15 -- -- -- -- -- 21 22 22 21 20 .03 .05 .04 .09 .03 .00 .00 .00 .00 .00 4.8 4.8 6.4 4.8 6.4 10 16 7.3 6.8 5.8 34 21 36 43 43 40 40 44 40 44 0 0 0 0 0 2.0 1.6 2.0 2.4 2.4 64 64 62 69 68 .0 .1 .0 .0 .0 1.0 .2 .3 1.2 .2 -- -- * 182 * 176 * 201 * 187 * 199 53 78 46 40 40 20 45 10 7 4 290 294 307 308 305 6.9 26 -- 7.0 25 -- 7.1 27 -- 6.8 27 -- 6.9 28 -- May 29 June 13 June 13 June 13 June 19 -- -- -- -- -- 22 22 22 22 22 .02 .05 .15 .05 .05 .00 .00 .00 .00 .00 3.2 6.4 6.4 4.8 4.8 8.8 8.8 7.8 7.8 8.8 41 42 43 44 42 40 48 52 44 44 0 0 0 0 0 2.8 .4 .8 1.6 1.2 69 73 70 73 73 .1 .1 .1 .1 .0 1.0 .1 .1 .1 .0 -- -- -- -- * 211 * 230 * 208 * 251 * 216 44 52 48 44 48 11 13 5 8 12 307 321 321 321 320 6.8 -- -- 7.6 -- -- 6.8 -- -- 7.0 -- -- 7.2 31 -- Ju ne 26 -- 22 .00 .00 4.8 Ju ly 3 -- 22 .05 .00 8.0 Ju ly 10 -- 22 .06 .00 6.4 Ju ly IT -- 29 .06 .00 7.2 Ju ly 31 -- 24 .01 .01 8.0 * Residue on evaporation at 180°C. 9.7 11 9.7 10 7.3 42 37 45 43 46 46 58 48 44 44 0 0 0 0 0 2.8 1.2 2.8 4.4 2.8 72 69 77 80 78 .1 .1 .1 .1 .6 .7 4.0 .3 .4 -- * 221 * 228 * 227 * 217 * 191 • 52 68 56 59 50 14 17 17 23 14 352 352 340 332 340 6.9 30 -- 7.1 29 -- 7.5 -- -- 6.9 28 -- A q 11 -- - - -- -- -- 41 CHEMICAL ANALYSIS Hardness as CaCO3 Ca lcium, magnesium 0 , a ) '' . Specific conductance (micromhos at 25°C) Temperature (°C) 1 Footnote Milligrams per liter Date of collection Discha rge (gpm ) 72. Manganese ( Mn ) Calcium ( Ca ) u, Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bicarbonate ( HCO3 ) Ca rbona te ( 003 ) Sulfate ( SO4 ) . 0 a, -o 8 0 Fluoride ( F ) Nitra te ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calculated ----,i 0 - cil ro c 0 0.01 0.00 8.0 7.3 46 44 0 1.6 79 0.1 0.3 -- *214 50 14 353 7.0 29 -- kug. 14 -- 23 .03 .00 5.6 8.3 49 44 0 4.8 80 .1 .3 -- *232 48 12 347 7.0 32 ,ug. 21 -- 23 .00 .00 11 17 41 38 22 4.0 80 .2 .0 * 230 96 28 379 9.7 31 -- Aug. 28 -- 24 .04 .00 7.2 7.3 43 50 0 2.4 70 .1 .3 *236 48 7 368 7.0 -- -- Sept. 4 -- 24 .02 .00 8.0 8.3 49 48 0 1.6 84 .0 1.7 * 230 54 15 377 6.6 30 -- kug. 7, 1967 -- 25 Sept. 11 -- 8 .00 - 6.4 8.8 50 44 0 2.8 86 .1 1.6 *210 52 16 368 7.1 -- -- Sept. 18 -- 9 .02 -- 6.4 11 49 46 0 3.6 88 .2 2.4 *207 61 23 380 7.1 -- -- Sept. 25 -- 26 .01 .00 6.4 16 45 62 0 3.6 90 .2 .6 * 240 84 33 383 7.3 32 -- Fan. 19, 1968 -- -- -- -- -- -- -- -- -- 100 -- -- -- -- -- -- -- -- -- Mar. 6 -- -- -- -- -- -- -- 100 -- -- -- -- - -- hpr. 3 0 27 .00 9.0 7.6 58 3.9 58 0 1.6 98 .2 .4 0.0 *234 54 6 430 7.4 *Residue on evaporation at 180°C. GROUND-WATER STATIONS Well 1 (21-64.58-1-43) Owner.--U.S. Government-V.I. Government. Measuring point.--Top of 6-in casing, 0.4 ft above lsd. Name.--USGS-28 (Estate Santa Maria). Land elevation.--920 ft above msl. Location.--Lat 18° 21' 29", long 64° 58' 48". Highest water level.--75.85 ft below lsd, Jan. 3, 1966. Description. --Drilled unused water-table well, Lowest water level.--98.05 ft below lsd, May 23, 1969. diam 6-in. Records available.--Water levels: 1965-69. Depth.--300 ft. Remarks.--Measurement discontinued, August 1969. Aquifer.--Volcanic rocks of Cretaceous age. Water levels, in feet below land surface Water Water Water Water Date Date Date level level level level Nov. 15, 1965 86.16 May 10, 1966 90.32 July 6, 1967 90 .22 Aug . 1 , 1968 94.76 Nov. 26 82.81 May 26 91.04 Aug. 1 87.71 Sept. 3 95.22 Dec. 8 83.25 June 8 91.40 Sept. 1 92.38 Oct. 1 96.72 Dec. 14 84.53 June 27 91.64 Oct. 3 91.91 Nov. 4 97.59 Dec. 22 76.67 July 12 91.74 Nov. 1 93.05 Dec. 4 92.10 Jan. 3, 1966 75.85 July 25 91.67 Dec. 7 93.42 Jan. 3, 1 969 95.69 Jan. 17 84.15 Aug. 5 91.92 Dec. 8 93.43 Feb. 5 89.28 Jan. 27 83.53 Aug. 29 92.12 Jan. 4, 1968 93.37 Mar. 6 86.82 Feb. 14 83.38 Sept. 27 88.28 Feb. 2 94.33 Apr. 23 95.28 Feb. 28 87.78 Oct. 31 85.10 Mar. 4 94.93 May 23 98.05 Mar. 15 90.38 Jan. 3, 1 967 90.90 Apr. 3 94.29 June 23 75.96 Mar. 30 86.21 Mar. 13 90.68 May 3 93.68 July 23 77.30 Apr. 12 86.47 Apr. 17 91.20 June 3 94.09 Aug. 19 84.23 Apr. 23 89.83 June 1 90.14 July 3 94.46 - --- 42 Well 2 (21-64.57-2-33) Owner. -- U .S . Government-V.I. Government. Measuring point.--Top of 6-in casing, 1.8 ft above lsd. Name.--USGS-4 (Estate Dorothea). Land elevation.--720 ft above msl. Location.--Lat 18° 21' 41", long 64° 57' 45". Highest water level.--31.09 ft below lsd, Jan. 3, 1966. Description. --Drilled water-table production well, Lowest water level.--a78.15 ft below lsd, Nov. 30, 1964. diem 6-in, cased 0-88. Records available.--Chemical analyses: September 1963 Depth.--142 ft. to February 1968. Aquifer. --Volcanic rocks of Cretaceous age. Water levels: 1963-69. Remarks. --Measurement discontinued, February 1969. CHEMICAL ANALYSIS 1 Temperature ( eC Milligrams per liter Specific conductance (micromhos at 25°C ) Date of collection Discharge (gpm ) Manganese ( Mn ) F Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) Bica rbonate ( HCO3) Carbona te ( 003 ) Sulfate ( SO4 ) Hardness as CaCO3 Orthophospha te ( PO4 ) Dissolved solids ca lcula ted -. T Fluoride ( F ) - 0, O 7,.; ._. o- Z u) r-• Ca lcium, magnesium Non- carbonate x a ..,_ 2 2 a)-o al u 2a 8 .... u) Sept. 17,1963 -- -- -- -- -- -- -- -- -- -- 120 -- -- -- -- 62 -- -- -- -- -- Sept. 29,1964 -- 33 0.0 -- 14 15 245 524 () 37 112 0.4 3.0 -- * 724 96 0 1,210 8.1 26 -- Feb. 2, 1968 -- 35 .000.00 17 11 27710.7 510 10 48 136 .4 4.1 0.0 790 88 0 1,310 8.4 26 -- o z * Residue on evaporation at 180' C . Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Sept. 28, 1963 Oct. 5 Oct. 12 Oct. 19 Oct. 26 35.34 35.91 36.41 36.84 37.22 Apr. 25, 1964 May 2 May 9 May 16 May 23 41.08 41.15 41.25 41.32 41.42 Dec. 7, 1964 Dec. 14 Dec. 21 Jan. 5, 1965 Jan. 11 a75.90 61.05 65.83 66.81 55.14 May 26, 1966 June 13 July 25 Aug. 29 Sept. 27 42.12 8 44.40 43.68 44.76 44.23 Nov. 2 Nov. 9 Nov. 16 37.53 37.78 38.14 May 30 June 6 June 13 41.50 41.60 41.69 Jan. 18 Jan. 25 Feb. 1 54.63 54.10 54.47 Oct. 31 Nov. 29 Jan. 3, 1967 40.74 a 43.40 a47.60 Nov. 23 38.33 June 20 41.80 Feb. 8 55.08 Jan. 31 44.85 Nov. 30 38.57 June 26 41.88 Feb. 15 59.66 Mar. 13 a48.73 Dec. 7 Dec. 14 Dec. 21 Dec. 28 Jan. 4, 1964 38.77 38.96 39.11 39.29 39.45 July 3 July 10 July 18 July 25 Aug. 3 42.00 42.11 42.07 42.35 42.49 Mar. 1 Mar. 15 Mar. 22 Apr. 5 Sept. 24 55.84 57.36 72.64 61.57 48.63 Apr. 17 June 1 July 7 Aug. 1 Sept. 1 48.38 8 45.92 58.12 50.79 51.50 Jan. 11 Jan. 18 Jan. 25 Feb. 1 Feb. 8 39.56 39.70 39.81 39.93 40.06 Aug. 15 Aug. 22 Aug. 30 Sept. 5 Sept. 19 46.51 48.32 46.26 44.97 56.36 Oct. 15 Nov. 12 Nov. 26 Dec. 3 Dec. 8 49.50 43.72 39.88 38.99 38.09 Oct. 3 Nov. 1 Dec. 8 Jan. 4, 1968 Apr. 3 52.94 54.59 50.29 50.14 51.87 Feb. 15 Feb. 22 Feb. 29 40.20 40.33 40.45 Sept. 26 Sept. 29 Oct. 3 58.30 67.70 63.14 Dec. 14 Dec. 22 Jan. 3, 1966 37.60 36.14 31.09 May 3 July 3 Aug. 1 57.04 62.00 59.88 Mar. 7 40.55 Oct. 11 63.37 Jan. 17 36.95 Sept. 3 59.63 Mar. 15 40.68 Oct. 17 70.50 Jan. 27 39.49 Oct. 1 55.78 Mar. 21 Mar. 28 Apr. 4 Apr. 11 Apr. 18 40.74 40.81 40.88 40.95 41.01 Oct. 23 Oct. 30 Nov. 6 Nov. 13 Nov. 30 52.50 56.83 59.92 64.06 0 78.15 l'eb. 14 Mar. 15 Mar. 30 Apr. 23 May 10 37.75 38.75 41.38 39.90 42.60 Nov. 4 Dec. 4 Jan. 3, 1969 Feb. 5 a 59.12 50.74 49.13 44.46 a Pumping --- 43 Well 3 (22-64.57-2-74) Owner.--K. Tyson. Measuring point.--Top of 4-in casing, at land surface. Name.--Dorothea Bay Well-5. Land elevation.--10 ft above msl. Location.--Lat 18° 22' 13", long 64° 57' 40". Highest water level.--5.33 below lsd, Sept. 5, 1963. Description.--Bored water-table observation well, Lowest water level.--Dry. diam 4-in, cased 0-10 with perforated Records available.--Chemical analyses : August and sheet-metal pipe. October 1963. Depth.--10 ft. Water levels: 1963-65. Aquifer.--Beach sand and alluvium of Quaternary age. Remarks . --Recorder discontinued, July 1965. CHEMICAL ANALYSIS Specific conducta nce (m icrom hos at 25 °C) Milligrams per liter Date of collection Discharge (gpm ) a Tempera tu re (°C) Footnote Manganese (Mn ) Calcium ( Ca ) Magnesium (Mg ) Sodium ( Na Potassium ( K) Hardness as CaCO3 Carbona te ( CO3 ) Sulfate ( SO4 ) .1-2. 0 a, -a 8 2 CD Fluoride ( F) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids ca lcula ted 'TN O 7, 203 - c , o 0 Ca lcium, mag nesium Non- ca rbona te 1 (7) " _c3 ,.. (..) 030 2c OD X 0 _ Ed U) Aug.14,1963 Oct. 12 -- -- __ -- __ -- __ -- __ -- __ -- __ -- __ -- __ __ - 240 230 -- -- -- -- -- -- -- -- 170 138 -- -- -- -- -- -- 29 27 -- -- Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (in feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1963 5 10 15 20 25 eom -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 5.33 -- 6.09 6.39 6.64 6.28 6.66 7.06 5.75 6.28 5.95 5.86 6.46 6.37 6.79 7.01 7.00 6.78 7.15 7.36 7.58 7.81 7.91 8.05 1964 5 10 15 20 25 eom 7.65 7.25 6.91 -- -- 1.86 7.52 7.78 6.93 7.34 7.72 8.05 -- 8.39 8.49 8.19 8.46 8.65 8.76 8.89 8.66 8.60 8.85 8.92 -- f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f t 0 f f f f f f f f f f f f 1965 5 10 15 20 25 eom f f f f f f f f f f f f f f f f f f f f f f f f 5.40 5.88 5.79 6.00 6.10 -- -- 7.71 8.15 8.47 8.70 8.94 9.11 9.39 9.63 9.95 10.02 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- __ -- -- -- -- -- -- f - dry Well 4 (22-64.57-1-74) Owner.--K. Tyson. Name.--Dorothea Bay Dug Well Location.--Lat 18° 22' 15", long 64° 57' 40". Description.--Dug water-table production well, diem 10 ft. 122.--9 ft. A uifer. --Beach sand of Quaternary age. Measuring point.--SW corner of manhole, 2.7 ft above lsd. Land elevation. --8 ft above msl. Highest water level.--1.40 ft below lsd, Dec. 11, 1965. Lowest water level .--9.01 ft below lsd, Feb. 1, 1964. Records available. --Chemical analyses : 1962-65. Water levels: 1963-65. Remarks.--Recorder used from January 1963 to August 1963 and February 1964 to December 1965. Measurement dis­ continued, December 1965. --- 44 CHEMICAL ANALYSIS Milligrams per liter Hardness as CaCO3 Ca lcium, magnesium Non- ca rbonate Specific conducta nce (microm hos at 25 °C) Hd Temperature (°C) Footnote Date of lle co ction Discha rge (gpm ) Ma nganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) Bicarbonate (HCO3 ) Ca rbonate ( CO3 ) Sulfate ( SO4 ) — U Fluoride ( F ) Nitra te ( NO3 ) Orthophosphate ( PO4 ) Dissolved solids calculated O .... _ 0 - rn Uro 0c u- .i) 1:3 8 *.z.0 (7) )ec. 15, 1962 )ec. 22 )ec. 30 an. 5, 1963 an. 12 -- -- -- -- ---- -- -- -- -- ---- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ---- -- 240 225 230 210 230 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ---- 136 128 118 124 144 -- ---- -- -- -- ---- -- - 27 -- - 27 -- - 27 -- - 27 -- - 27 -- an. 19 an. 26 'eb. 9 'eb. 17 eb. 23 -- ---- -- -- -- ---- -- -- -- ---- ---- -- ---- -- -- -- ---- -- -- ---- -- -- -- ---- -- -- -- ---- -- -- -- 250 245 240 240 225 -- -- -- -- -- -- -- -- -- -- ---- -- -- -- -- -- -- -- -- 130 146 166 122 150 -- -- -- -- -- -- -- -- -- -- - 26 -- - 26 -- - 26 -- - 26 -- - 26 -- filar. 2 4ar. 10 4ar. 16 ,pr. 5 ,pr. 12 -- -- ---- -- -- -- -- -- -- ---- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 230 220 235 225 285 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 164 170 224 228 166 -- -- -- -- -- -- -- -- -- -- - 26 -- - 26 -- - 26 -- - 26 -- - 26 -- 20 May 25 une 22 une20 h 24 -- -- -- -- -- -- -- -- -- -- -- ---- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 245 220 255 250 115 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 168 176 178 194 200 -- -- -- -- -- -- -- -- -- -- - 26 -- - 26 -- - 27 -- - 27 -- - 27 -- ;ept. 28 )ct. 12 )ct. 26 Iov. 30 )ec. 7 -- -- -- ---- -- -- -- -- 20 -- 0.00 - -- -- ---- 48 -- ---- 39 -- -- ---- 355 -- ---- 798 -- -- ---- 0 -- -- ---- 37 230 260 210 210 255 - -- 0.4 -- -- -- 0.0 -- -- -- -- -- -- -- -- -- 1,080 148 146 152 266 280 -- -- -- -- 0 -- - 27 -- -- - 27 -- -- -- 27 -- 1,870 7.8 27 -- an. 25, 1964 29 Aar. 15 25 IsAay 2 ---- -- -- -- ---- -- -- -- ---- -- -- -- -- ---- -- ---- ---- ---- -- -- -- 240 220 220 200 200 -- -- -- -- -- -- -- ---- -- -- ---- -- -- 224 218 148 204 188 -- -- -- ---- - 26 - 26 -- 26 - 27 - 27 -- -- - -- -- une 20 Lily 3 A 22 19 26 -- - - ---- -- -- - - -- -- -- -- - - -- -- -- 190 210 240 230 220 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 180 132 140 232 222 -- -- ---- -- -- -- - 27 - 28 - 28 -- -- -- )ct. 3 )ct. 17 )ct . 23 )ec. 7 )ec. 21 -- -- -- -- -- -- -- ---- -- -- -- -- -- -- 220 220 230 230 240 -- -- -- -- -- -- -- -- ---- -- -- -- ---- 216 220 244 220 108 -- -- -- ---- -- -- -- ---- - 28 - 27 - 27 - 2. - 26 -- -- -- - -- an. 11, 1965 'eb. 1 'eb. 22 'pr. 5 /lay 3 ---- -- -- -- -- -- -- -- -- 240 130 260 70 412 -- -- -- -- -- -- -- -- -- -- 224 88 236 44 288 -- -- -- -- -- -- -- -- -- -- - 25 - - - • - 2. - r -- une 7 une 22 uly 6 )ec. 19 -- -- -- -- -- -- -- -- 332 360 410 230 -- -- -- -- -- -- -- -- 260 304 236 244 -- -- -- -- -- -- -- -- - 28 -- - 27 -- - 27 -- -- - * Residue cn evaporation at 180°C. 45 Highest water level below land surface on the 5th, 1 0th, 15th, 20th, 25th, and end of each month fror. recorder graph (in feet) Day Jan Feb Mar Apr May June July I Aug Sept Oct Dec 1 963 5 5.35 6.26 7. 1.26 5.18 6.88 4.08 10 5.42 3.23 1.92 5.69 4.7" 4.68 15 .77 3.43 6.31 5.52 5.27 •,.93 20 5.'15 1.19 6.46 6.24 5.67 25 6.21 6.C9 1.06 6.63 6.33 5.33 eom 6 2.1 6 62 4.77 1.74 6.62 6.43 3.21 ''liter levels, in feet below land surface Water Water Water V. 16,te Date Date 1, ,,•, I level level lev,_I :3•Tt. 1 3, 1-6 3 3.t : • .• ' . - . 1 ,•,.. I, 1,46 8.33 an. 18, 1964 6. 1 „ • ;1 :1 , , . •. . ;. ' :). e. 1 -; 6.57 Jan. 25 7.23 Sent. .it, 1.1 \ov. I .4i Dec. 21 6.64 Feb. 1 9. '1 I.et. .)'- 7';•,:. lt, . Dec. 28 7. , 9 Feb. 8 6.80 Oct. 12 ).61 . . "an. 4, 1 964 7.17 . 3.74 . . n. 11 6.45 nc.,t •.• to 1, I, ii .••••• the l)th, 25th, 'nd of each month from recorder graph (in feet' Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec lq>4 5 -- 7.,7„ . • . -- 7.15 1.1 6.93 6.6 6.6 , 6.,, -- 10 -- 7 ..1 • . . 7.1 7.0 7.1 6.85 6.65 6.6, ', 6.7 7. 15 __ . - 8. 7. 7. ,) 6.85 6.7 6.75 20 .. i . n. 6.5 (..73 1.15 6.6 6.65 7.7 25 .. . 7. 7. 3 7.1 6.75 7.1 6.5 , 6.8' eom . 7.5' n.7 6.7 6.55 6.7, 1 c. . • . . 1 .(,5 5 . • , • • • ' .a - -- 5.9 -- .. . . ,. __ 10 n., . . . '.71, . .. 6.5.. 5.85 -- ..- . 15 . . .' , . , •. -- . . -- t.71 5.75 2.2 1. -.., , 20 7.40 . . . ..0 :.1 25 7. . . .. .6, ..13 -- 1.55 1. eom 1. a ., , .. , . -- -- 7. i ' . . .. 7.15 , . . . . _ __ __ -- -- -- -- -- -- -- -- 46 Well 5 (21-64.54-4-721 Owner.--D. Raimer. Measuring point.--Top of curb, 2.0 ft above lsd. Name.--Rosendal Dug Well Land elevation.--400 ft above msl. Location.--Lat 18' 21' 16", long 64' 54' 48". Highest water level.--3.17 ft below lsd, Dec. 17, 1962. Description".--Dug water-table production well, Lowest water level.--5.53 ft below lsd, Jan. 22, 1964. diam 7 ft. Records available.--Chemical analyses: August and Depth.--9 ft. December 1963. Aquifer.--Alluvium of Quaternary age and volcanic Water levels: 1962-64. rocks of Cretaceous age. Remarks.--Measurement discontinued, January 1964. CHEMICAL ANALYSIS Dissolved solids ca lcula ted Hardness as CaCO3 Ca lcium, mag ne sium , Br. c 230 Specific conducta nce (micromhos at 25°C ) Milligrams per liter — Hd Tempera ture (- C F ootnote , 7\!agnesium ( Mg) 1 Sodium Na() Potassium ( K ) i , 1 Ca rbona te I ( CO3 ) E a — —_ '3, — _ .7' 2 c , 0 0 ' 0 cc 0 0 . c., 2.' •-) c., -z) — c Or ..). a .... 7 T: t Cf; n- v) 0 i. -- -- -- - 28 -- 255 310 470 -- -- 308 -- - 26 -- Water levels, n feet below land surface Date Water level Date Water level Date Water level Date Water level Dec. 17, 1 962 Jan. 18, 1963 rob. 21 Mar. 23 3.17 4.37 4.77 5.00 Apr. 26, 1963 May 20 June 18 July 24 4.6', 4.3, 4.5, 4.8e Aug. 21, 1963 Sept. 19 Oct. 22 Nov. 20 4.76 4.04 4.54 4.79 Dec. 16, 1 963 Jan. 22, 1964 4.84 5.53 2 Date of collec tion 47 c Well 6 (20-64.54-6-08) Owner . --U .S. Government-V.I. Government. Name.--USGS-5 (Estate Wintberg). Location.--Lat 18° 20' 59", long 64° 54' 12". Description.--Drilled unused water-table well, diam 6-in, cased 0-20. Depth.--250 ft. Aquifer.--Volcanic rocks of Cretaceous age. Measuring point .--Top of 6-in casing, 0.8 ft above lsd. Land elevation.--680 ft above msl. Highest water level.--58.75 ft below lsd, June 23, 1969. Lowest water level .--121.76 ft below lsd, Dec. 4, 1968. Records available.--Chemical analysis: October 1963. Water levels : 1963-69. Remarks.--Measurement discontinued, July 1969. CHEMICAL ANALYSIS Mill grams per liter . Hardness - E -a - _ - a) 1,3 a - .-. as CaCO3 CT - - v 2 r• ':' 7 c4 1.... Or 6 ...... 6' .2 2 6: ---a„- - - - z - 2.2 cn - Z 2- _ 6" _ _ _ in . E S 6 2 - o ,, cd E, -. (0 to ... F. - , I: 7 ji, o0 -o ca z -o A 0 , c .2 (, () , x .{2 0 .-' (1) T'.. , a a. -7.." --. D. a) 0 S c o 2 o 0 (i) .._. c u 0 2 (3, " &) -, uct; 0 ... . - 4. 8 u c ' 0 .a, :41-.: ro El ("A 0 :4 0 6 E 0) c ., 73 0, co ((/)) +6 .`" U cn 5 :E i.: - t 0 ft) 0 .->. a. 305 0.9 28 -- 1,300 382 0 2,200 7.9 29 -- Oct. 14,1963 -- 28 0.04 -- 59 57 372 730 0 131 Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Oct. 28, 1963 96.27 July 6, 1964 102.90 May 3, 1965 111.58 Oct. 31, 1966 99.69 Nov. 4 109.64 July 13 102.88 May 10 111.81 Nov. 30 100.40 Nov. 12 109.80 July 20 102.67 May 24 112.32 Jan. 3, 1 967 101.40 Nov. 19 109.40 Aug. 10 103.25 June 2 113.25 Jan. 31 102.25 Nov. 27 104.30 Aug. 24 103.68 June 14 118.72 Mar. 13 103.92 Dec. 2 105.02 Aug. 31 103.90 June 21 113.20 Apr. 18 105.30 Dec. 10 105.84 Sept. 9 104.22 June 29 113.41 June 1 106.54 Dec. 16 102.20 Sept. 14 104.39 July 7 113.64 July 6 107.56 Dec. 23 101.95 Sept. 23 104.67 July 19 113.95 Aug. 1 107.36 Dec. 30 101.52 Sept. 29 104.85 Aug. 5 113.81 Sept. 1 1(19.23 Jan. 6, 1 964 101.25 Oct. 13 105.25 Aug. 21 113.81 Oct. 3 110.16 Jan. 15 101.03 Oct. 19 105.41 Nov. 2 119.30 Nov. 2 109.88 Jan. 22 100.80 Oct. 27 105.64 Nov. 26 101.60 Dec. 7 110.97 Feb. 3 100.67 Nov. 2 105.82 Dec. 8 89.48 Jan. 4, 1968 111.79 Feb. 11 10(1.60 Nov. 9 106.04 Dec. 14 79.68 Feb. 6 112.86 Feb. 17 100.65 Nov. 23 106.45 Dec. 22 8(1.55 Mar. 5 113.77 Mar. 5 101.15 Dec. 1 106.63 Jan. 3, 1966 79.18 Apr. 3 111.98 Mar. 9 100.76 Dec. 7 106.81 Jan. 17 80.95 May 3 112.72 Mar. 16 100.84 Dec. 14 106.95 Jan. 27 84.43 June 3 114.00 Mar. 24 100.9/ Dec. 28 107.49 Feb. 14 88.52 July 3 115.29 Mar. 30 100.99 Jan. 4, 1 965 107.71 Mar. 15 92.48 Aug. 1 117.12 Apr. 7 101.17 Jan. 12 107.95 Mar. 30 93.13 Sept. 3 118.17 Apr. 13 1(11.28 Jan. 26 108.41 Apr. 12 94.05 Oct. 1 118.26 Apr. 20 101.45 Feb. 8 108.84 Apr. 26 95.27 Nov. 1 121.10 May 5 101.75 Feb. 15 109.09 May 10 96.37 Dec. 4 121.76 May 11 101.85 Feb. 23 109.34 May 26 97.50 Jan. 3, 1969 121.04 May 18 102.07 Mar. 2 109.56 June 8 98.43 I eb. 5 112.67 May 26 102.23 Mar. 8 109.77 June 29 99.40 Mar. 24 97.41 lune 1 102.39 Mar. 15 110.02 July 12 99.82 Apr. 23 99.64 June 8 102.57 Mar. 24 110.29 July 27 100.19 May 23 101.91 June 15 102.49 Mar. 30 110.54 Aug. 5 100.58 lune 23 58.75 June ) 2 102.65 Apr. 5 110.65 Aug. 29 101.40 July 23 92.36 June 29 102.84 Apr. 26 111.8:, Sept. 26 102.44 Specific conducta nce (micromhos a t 25°C) Temperature ( °C) Footnote I Hd i --- - - - - --- - - __ __ 48 Well 7 (21-64.54-5-35) Owner . --U .S. Government-V.I. Government. Measuring point.--Top of 6-in casing, 1.8 ft above lsd. Name .--USGS-3 (estate Lovenlund). Land elevation.--90 ft above msl. Location.--Lat 18° 21' 38", long 64° 54' 31". Highest water level.--5.20 ft below lsd, Jan.17, 1966. Description. --Drilled water-table production well, Lowest water level.--66.64 ft below lsd, Jan. 3, 1969. diem 6-in, cased 0-31. Records available. --Chemical analyses: September 1963 Depth.--80 ft. and date unknown 1966. Aquifer.--Limestone of Cretaceous age. Water levels: 1963-69. Remarks.--Recorder used from October 1963 to March 1965. Measurement discontinued, February 1969. CHEMICAL ANALYSIS Milligrams per liter Hardness as CaCO3 Ca lcium, magnesium Non- ca rbonate Specific conducta nce (micromhos at 25°C) Hd Date of collection Discharge (gpm ) - Oe' - a ..: .2 cn Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) ::: 0 a -o 8 78 0 Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calculated 1 Temperature ( °C ) Footnote 2(.: a - 0 0 -,9 0 a0 m _ -- 386 -- -- 1966 -- 35 -- ;ept. 5, 1963 -- -- 0.01 88 68 297 748 0 58 330 0.9 4.5 -- 1,280 499 0 2,180 7.8 -- -- * Residue on evaporation at 180°C. Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (in feet) Day Jan Feb Mar Apr May June July Aug Sept 1 Oct Nov Dec 1963 5 12.40 13.65 14.90 10 12.55 13.90 15.10 15 12.75 14.05 15.30 20 12.95 14.35 15.55 25 13.20 14.45 eom 13.45 14.65 16.05 1 964 5 16.20 17.08 17.92 18.63 20.33 21.07 21.77 22.47 22.98 23.64 24.25 10 16.35 17.23 18.05 18.78 20.45 21.18 21.89 22.58 23.07 23.74 24.35 15 16.50 17.36 18.17 18.91 20.57 21.29 22.02 22.69 23.16 23.83 24.50 20 15.65 17.49 18.27 19.04 20.70 21.40 22.19 22.81 23.26 23.95 24.62 25 16.77 17.63 18.39 19.17 -- 20.83 21.51 22.28 22.93 23.35 24.03 24.72 eom 16.92 -- 18.47 19.30 20.19 20.96 21.63 22.37 22.90 23.51 24.12 24.83 1965 5 24.96 25.31 26.14 -- -- -- 10 25.07 25.68 26.24 -- - -- -- 15 25.08 25.79 26.32 -- -- 20 25.19 25.88 26.41 -- -- 25 25.29 25.98 26.52 -- -- - eom 25.39 26.04 -- -- Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level May 3, 1965 27.33 Dec. 14, 1965 15.87 Aug. 31, 1966 14.00 Feb. 6, 1968 26.20 May 10 26.78 Dec. 22 11.79 Sept. 26 14.51 Mar. 5 26.89 26.45 Jan. 3, 1966 6.38 Oct. 31 12.50 Apr. 3 28.03 May 11 May 18 25.80 Jan. 17 5.20 Nov. 30 13.55 May 3 28.22 June 2 26.50 Jan. 27 5.30 Dec. 28 14.15 June 3 28.85 June 21 27.06 Feb. 14 6.04 Jan. 31, 1967 15.20 July 3 29.86 27.32 Mar. 15 7.24 Mar. 13 16.75 Aug. 1 30.50 June 29 27.52 Mar. 30 7.71 Apr. 18 17.90 Sept. 3 30.00 July 8 July 21 28.76 Apr. 12 8.42 June 1 18.63 Oct. 1 30.41 Aug. 5 26.94 Apr. 26 8.65 July 6 19.83 Nov. 1 49.58 Dec. 4 Aug. 21 28.33 May 9 9.13 Aug. 1 20.82 50.50 29.42 May 26 9.66 Sept. 1 22.58 Jan. 3, 1969 66.64 Sept. 30 June 8 10.23 Oct. 3 22.85 Feb. 3, 1969 47.40 Nov. 2 28.77 11.08 Nov. 1 23.42 Nov. 16 25.09 June 29 Nov. 26- 22.44 July 25 12.17 Dec. 8 24.47 Dec. 8 20.42 Aug. 5 12.66 Jan. 4, 1968 2,.?.' -- 49 Well 8 (21-64.54-2-35) Owner.--C. Petersen. Measuring point.--Top of curb, 1.5 ft above lsd. Name.--Lovenlund Dug Well. Land elevation.--80 ft above msl. Location.--Lat 18° 21' 40", long 64° 54' 32". Highest water level.--2.65 ft below lsd, Jan. 27, 1966. Description.--Dug water-table production well, Lowest water level.--Dry. diam 7.5 ft. Records available.--Chemical analyses: August and Depth.--21 ft. November 1963. Aquifer.--Limestone of Cretaceous age. Water levels: 1962-68. Remarks.--Measurement discontinued, January 1968. CHEMICAL ANALYSIS Milligrams per liter - _ . Hardness c: _ cr, - _ a) cr '2 ro 2 --„, ca a) 64 .° . a. E .. ... 73 as CaCO3 c - ,:r ::-. - O 2, - o's' - OJ - 0 - z - - 13.: oy) -o - o :,-_.-' = a . B E a) in - -a 2 a, 2 c3) (73 " a; E E - E g 6 2 7., - 0., a> - 0 v" u a E P. .. ,.. - - n., a E ..?, .ra o 00 G., o .c 0 > u . ' * 3 . n, . To' a cr) x {2C.) 4,-.3 1..0 4 f..`i a. a. - -• - co c c .c a) c w - tn ro 0 - .3.4 0 g c.) u 2 (. 0 „ U ,_, M .-- ... 8 i. • _c ./. I.!. .1 co to cr v) 61 0 -5 .0 12 - C 0 C.) co u co O , ... ..... g .. C -8 , .) 1) M 0, 6 cn 0 a. cr) 0 ''''. 0 F21 E 2 2 1" __ - -- -- -- -- -- -- -- 35 -- -- -- -- 140 -- -- 28 -- hug. 21, 1963 -- -- 248 -- -- 26 -- -- -- -- -- -- 150 -- -- -- -- ov. 11 -- -- -- -- -- Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Oct. 29, 1962 5.24 Mar. 3, 1964 13.17 July 8, 1965 f Nov. 30, 1966 8.80 Dec. 17 6.96 Mar. 26 13.68 Sept. 30 f Dec. 28 9.33 Jan. 18, 1963 8.03 Apr. 22 14.46 Nov. 2 f Jan. 31, 1967 11 .54 Feb. 21 9.13 May 27 15.41 Dec. 2 15.58 Mar. 13 11.93 Mar. 23 10.09 June 22 16.04 Dec. 14 7.22 June 1 13.83 Apr. 26 10.07 July 20 16.65 Dec. 29 3.98 July 6 14.37 May 20 8.60 Aug. 25 15.14 Jan. 27, 1966 2.65 Aug. 1 16.10 June 18 9.72 Sept. 23 18.18 Mar. 30 4.17 Sept. 1 17.02 July 24 10.63 Oct. 27 18.73 Apr. 26 4.82 Oct. 3 18.13 Aug. 21 10.68 Nov. 20 19.32 May 26 4.50 Nov. 1 18.42 Sept. 19 7.68 Dec. 14 19.89 June 29 6.57 Dec. 7 19.98 Oct. 22 8.32 Jan. 11, 1965 f July 25 7.50 Jan. 4, 1968 22.43 Nov. 20 9.51 Feb. 8 f Aug. 31 9.40 Dec. 16 10.18 Mar. 8 f Sept. 26 9.84 Jan. 22, 1964 11.93 May 10 17.38 Oct. 31 7.84 f - dry Spec ific conducta nce (micromhos at 25°C) Temperature (°C) Footnote I Hd -- 50 Well 9 (20-64.52-4-24) Owner . --U .S . Government-V.I. Government. Measuring point.--Top of 6-in casing, 2.5 ft above lsd. Name.--USGS-2 (Estate Fresh Meadow). Land elevation.--120 ft above msl. Location.--Lat 18° 20' 48", long 64° 52' 40". Highest water level.--15.35 ft below lsd, Dec. 14, 1965. Description.--Drilled water-table production well, Lowest water level.--32.68 ft below lsd, May 3, 1968. diam 6-in, cased 0-21. Records available.--Chemical analyses : 1963-66. Depth.--120 ft. Water levels: 1963-69. Aquifer.--Limestone of Cretaceous age. Remarks. --Mea surement discontinued, February 1969. CHEMICAL ANALYSIS Hd - emp T erature ( CC) Footnote Hardness Ca lcium, as CaCO3 magnesium Non- carbonate Specific conducta nce (micromhos at 25°C) Milligrams per liter Date of collection Discharge (gpm ) Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calcula ted Ma ng anese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) - -N 2 - ,t) (-) 0 0 c P O 65 a) x 0 __ Ca rbona te ( CO3 ) 6 (/)Or _ o (1)P- (7) a 13 - .3.) 8 ,, ro Si 2 .61 .-E. (.0 0 -- 316 -- -- - 28 -- -- -- -- -- 165 -- -- -- kug . 23, 1963 -- -- -- -- -- -- -- 196 -- -- -- 28 -- )ct. 14 0 1,910 8.0 28 -- ,Joy. 14 -- 35 0.00 -- 40 46 334 670 0 56 278 0.7 18 -- 1,090 289 uly 27, 1966 -- 5.6 .00 0.00 13 7.7 31 102 0 8.8 26 .1 2.4 -- *149 64 0 276 7.6 -- -- * Residue on evaporation at 180°C. Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Sept. 16, 1963 23.28 June 1, 1964 28.09 Mar. 8, 1965 28.74 June 27, 1966 27.58 Sept. 24 Oct. 14 Oct. 24 Oct. 28 24.64 25.93 26.21 26.37 June 8 June 15 June 22 June 29 28.14 28.16 28.18 28.20 Mar. 15 Mar. 23 Mar. 30 Apr. 5 28.76 28.78 28.81 28.82 July 11 July 25 Aug. 5 Aug. 30 27.93 27.79 27.80 29.10 Nov. 4 Nov. 12 26.90 26.68 July 6 July 13 28.17 28.19 Apr. 19 Apr. 26 28.81 28.83 Sept. 26 Oct. 31 28.05 26.89 Nov. 19 26.79 July 20 28.13 May 3 28.84 Nov. 29 28.07 Nov. 24 26.54 Aug. 10 28.24 May 10 28.21 Dec. 28 27.54 Dec. 2 26.68 Aug. 24 28.22 May 18 27.79 Jan. 31, 1967 28.24 Dec. 10 26.74 Aug. 31 28.19 May 24 28.01 Mar. 14 28.69 Dec. 16 Dec. 24 26.85 27.05 Sept. 9 Sept. 14 28.28 28.32 June 2 June 7 28.07 28.16 Apr. 18 June 1 28.27 28.23 Dec. 30 Jan. 6, 1964 27.06 27.16 Sept. 23 Sept. 29 28.30 28.26 June 21 June 24 28.37 28.45 July 6 Aug. 2 29.79 26.68 Jan. 15 Jan. 23 27.24 27.31 Oct. 13 Oct. 19 28.25 28.23 July 7 July 21 28.52 27.63 Sept. 1 Oct. 3 28.92 30.13 Feb. 3 27.41 Oct. 28 28.29 Aug. 5 27.64 Nov. 1 29.71 Feb. 10 27.47 Nov. 2 28.32 Nov. 16 23.37 Dec. 7 29.29 Feb. 17 27.52 Nov. 9 28.35 Nov. 26 23.16 Jan. 4, 1968 29.50 Feb. 24 27.58 Nov. 23 28.39 Dec. 8 24.02 Feb. 2 29.49 Mar. 2 27.62 Nov. 30 28.41 Dec. 14 15.35 Mar. 5 30.85 Mar. 9 Mar. 16 Mar. 24 28.15 27.72 27.76 Dec. 7 Dec. 14 Dec. 21 28.43 28.46 28.52 Jan. 3, 1966 Jan. 17 Jan. 27 18.00 20.30 21.77 Apr. 3 May 3 June 3 31.52 32.68 30.19 Mar. 30 Apr. 7 27.82 27.87 Dec. 28 Jan. 4, 1965 28.55 28.55 Feb. 14 Mar. 1 23.57 24.30 July 3 Aug. 1 30.30 29.67 Apr. 13 Apr. 20 27.84 27.82 Jan. 11 Jan. 26 28.59 28.60 Mar. 15 Mar. 30 24.95 24.84 Sept. 3 Oct. 1 30.07 30.34 May 5 27.87 Feb. 8 28.69 Apr. 12 25.87 Nov. 1 30.09 May 11 27.92 Feb. 15 28.70 Apr. 26 26.39 Dec. 4 28.80 May 18 28.00 Feb. 23 28.73 May 10 26.40 Jan. 3, 1969 29.86 May 26 28.05 Mar. 2 28.73 June 8 27.06 Feb. 5 27.57 51 Well 10 (20-64.52-1-07) Owner . --V . I. Government. Measuring point.--Top of curb, 3.5 ft above lsd. Name.--Frydendal Dug Well. Land elevation.--15 ft above lsd. Location.--Lat 18° 20' 56", long 64° 52' 19". Highest water level.--2.81 ft below lsd, Oct. 3, 1962. Description.--Dug water-table production well, Lowest water level.--9.84 ft below lsd, Mar. 8, 1965. diam 10 ft. Records available.--Chemical analysis: August 1963. Depth.--14 ft. Water levels: 1962-68. Aquifer. --Alluvium of Quaternary age. Remarks. --Measurement discontinued, January 1968. CHEMICAL ANALYSIS Milligrams per liter Date of collec tion Discha rge (gpm ) Silica ( SiO2 ) Iron ( Fe ) Ma ng anese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K ) Bicarbonate (HCO3 ) Ca rbona te ( 003 ) Sulfate ( SO4 ) Chloride ( C1) Fluoride ( F) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calcula ted Hardness as CaCO3 Ca lcium, magnesium B , a z -E) a u Specific conducta nce (micromhos at 25°C) pH Temperature ( °C) Footnote ,ug. 21, 1963 -- -- -- -- -- 696 -- -- -- 27 -- Date Oct. 3, 1962 Oct. 9 Oct. 29 Dec. 17 Jan. 18, 1963 Feb. 21 Mar. 23 Apr. 26 May 20 June 18 July 14 Aug. 21 Sept. 19 Oct. 22 Nov. 20 Dec. 16 Water level 2.81 3.10 3.61 4.95 4.93 5.30 6.06 5.68 4.56 5.93 6.06 5.96 5.03 5.80 6.51 7.48 Water levels, in feet below land surface Water Water Date Date level level Jan. 23, 1964 7.02 May 5, 1965 8.55 Mar. 3 7.53 June 18 7.21 Mar. 26 8.45 July 8 7.35 Apr. 22 7.62 Aug. 31 7.15 May 26 8.40 Nov. 2 5.97 June 22 8.60 Dec. 2 4.53 July 20 8.32 Dec. 14 2.97 Aug. 24 8.72 Dec. 29 3.17 Sept. 23 7.64 Jan. 27, 1966 3.54 Oct. 28 7.83 Mar. 1 3.85 Nov. 23 8.24 Mar. 30 4.45 Dec. 14 8.77 Apr. 26 4.53 Jan. 11, 1965 9.04 May 26 4.82 Feb. 8 9.26 June 27 5.58 Mar. 8 9.84 July 25 6.08 Apr. 7 9.48 Aug. 30 6.15 Date Sept. 26, 1966 Oct. 31 Nov. 29 Dec. 28 Jan. 31, 1967 Mar. 14 Apr. 18 June 1 July 6 Aug. 2 Sept. 1 Oct. 3 Nov. 1 Dec. 7 Jan. 4, 1968 Water level 5.85 5.03 5.50 5.20 6.17 6.87 7.66 7.72 8.36 8.57 8.79 8.82 7.63 7.62 7.78 52 Well 11 (20-64.51-1-66) Owner.--L. Lindquist. Measuring point.--Top of curbing, 1.8 ft above lsd. Name.--Smith Bay Dug Well. Land elevation.--8 ft above msl. Location.--Lat 18° 20' 18", long 64° 51' 28". Highest water level.--3.64 ft below lsd, Oct. 29, 1962. Description.--Dug water-table production well, Lowest water level.--12.75 ft below lsd, Aug. 21, 1963. diam 8 ft. Records available.--Chemical analyses: August and Depth.--12+ ft. November 1963. Aquifer.--Alluvium of Quaternary age Water levels: 1962-64. Remarks.--Measurement discontinued, January 1964. CHEMICAL ANALYSIS Milligrams per liter Hardness as CaCO3 Ca lcium, mag nesium Non- carbonate Specific conducta nce (micromhos at 25°C ) Hd Temperature ( CC) 1 Footnote Date of llection co Discha rge (gpm ) 6' — — cn — 0m , - ,..: Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) — Bicarbonate ( HCO3 ) Carbona te ( CO3 ) Sulfa te ( SO4 1 Chloride ( C1) Fluoride ( F ) Nitra te ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calculated z— — E E 2 ,,), 18 tro w a. aig. 21, 1963 5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 895 1,660 -- -- -- -- -- -- 864 262 -- -- -- -- -- - 29 -- 29 -- Date Oct. 9, 1962 Oct. 29 Dec. 17 Jan. 18, 1963 Water level 5.22 3.64 5.32 4.67 Water levels, in feet below land surface Water Water Date Date level level Mar. 23, 1963 a l2.39 July 24, 1963 10.07 Apr. 26 a11.25 Aug. 21 12.75 May 20 83./1 Sept. 19 a 8.09 June 18 12.69 Oct. 22 812.64 Date Nov. 20, 1963 Dec. 16 Jan. 23, 1964 Water level a12.04 a 12.09 5.55 a - pumping - - -- -- -- -- -- -- 53 Well 12 (20-64.51-13-99) Owner.--U.S. Government-V.I. Government. Measuring point.--Top of 6-in casing, 2.0 ft above lsd. Name.--USGS-23 (Red Hook). Land elevation .--40 ft above msl. Location.--Lat 18° 20' 01", long 64° 51' 09". Highest water level.--23.82 ft below lsd, June 23, 1969. Description.--Drilled unused water-table well, Lowest water level.--29.35 ft below lsd, July 3, 1968. diam 6-in, cased 0-23. Records available.--Chemical analysis: August 1965. Depth.--56 ft. Water levels: 1965-69. Aquifer.--Volcanic rocks of Cretaceous age. Remarks. --Measurement discontinued, July 1969. CHEMICAL ANALYSIS Specific conducta nce (m icrom hos at 25 °C) Milligrams per liter Date of collection Discha rge (gpm ) . Hardness -c Magnesium ( Mg ) Sodium ( Na Pota ssium ( K ) Bicarbonate ( HCO3 ) Carbona te ( CO3 ) Sulfate ( SO4 ) -o Orthophospha te (PO4 ) . as CaCO3 <- -6 - 2- ( F) F luoride 0c 6- a0 '6 7'.: x - a .., s.T. - ./. X o. . E -r.3 ro a> u co _ to N on- carbona te .2 2 . E e] .2 - c c 7; . 0 roU coci,c u- ro 0 vo ty, 0 "5 .. to , 0 n 1: -- 1,476 ug.12, 1965 -- -- -- -- -- -- 4 ,270 Water levels, in feet below land surface Date Water level Date Water level Date Wet -r level Dote Water level Aug. 31, 1965 Nov. 2 Nov. 16 Nov. 26 29.02 28.42 28.18 26.46 Apr. 26, 1966 May 10 May 26 June 10 27.96 28.07 28.18 28.36 Apr. 18, 1967 June 1 July 6 Aug. 2 28.58 28.74 28.89 28.87 Aug. 1, 1968 Sept. 3 Oct. 1 Nov. 4 29.17 28.81 28.58 28.65 Dec. 8 26.42 June 27 28.44 Sept. 1 28.83 Dec. 4 28.47 Dec. 14 Dec. 27 27.79 27.36 July 11 July 25 28.47 28.23 Oct. 3 Nov. 1 28.60 28.44 Jan. 3, 1969 Feb. 5 28.45 28.53 Jan. 3, 1966 27.23 Aug. 5 28.42 Dec. 7 28.71 Mar. 24 27.62 Jan. 17 Jan. 27 27.17 27.19 Aug. 30 Sept. 26 28.42 28.40 Jan. 4, 1968 l'eb. 6 28.85 28.92 Apr. 23 May 26 28.14 26.70 rob. 14 27.38 Oct. 31 27.90 Mar. 5 29.01 June 23 23.82 Mar. 1 27.55 Nov. 29 27.90 Apr. 3 28.99 July 23 26.70 Mar. 15 27.60 Dec. 28 27.98 May 3 29.10 Mar. 30 27.75 jan. 31, 1967 28.1(1 June 3 29.16 Apr. 12 27.84 Mar. 14 28.37 July 3 29.35 Temperature (SC) Footnote - - - - 54 Well 13 (19-64.51-1-41) Owner.--V.I. Government. Measuring point.--Top of curb, 2.6 ft above lsd. Name.--Benner Dug Well. Land elevation .--40 ft above msl. Location.--Lat 18° 19' 31", long 64° 51' 55 " . Highest water level.--5.36 ft below lsd, Dec. 14, 1965. Description.--Dug water-table production well, Lowest water level.--Dry, Dec. 16, 1963. diam 8 ft. Records available.--Chemical analysis: November 1963. Depth.--46 ft. Water levels: 1962-68. Aquifer.--Alluvium of Quaternary age. Remarks.--Measurement discontinued, January 1968. CHEMICAL ANALYSIS Specific conducta nce (microm hos at 25°C) Milligrams per liter Date of collection Discha rge (gpm ) 0 Hardness - Magnesium ( Mg ) Sodium ( Na Pota ssium ( K ) -a a Orthophospha te ( PO4 ) Ca rbona te ( CO3 ) Sulfa te ( SO4 ) as CaCO3 _ - - 2 Fluoride ( F ) ,-.-,0 2.ro - --o. T, 0- a -o 8 :a' 6 (-- 13 cv . ...• ;,. Ca lcium, magnesium Non- ca rbonate rn 0 0 73 r° .--' c ....., 1.12ro ,_..., . Ei a cu 0 -8 0 > o co c m x C> 73 (0 (n u ro o CI, --, .9, 1...o " ........ CO a . na ... . cn 0 _ /. 0 El :,--.. Joy. 5, 1963 -- -- -- -- -- -- -- -- -- -- 130 - - - - - - - - 140 -- Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Oct. 29, 1962 Dec. 17 Jan. 18, 1963 Feb. 21 Mar. 23 8.36 22.23 23.92 27.52 32.62 Mar. 26, 1964 Apr. 22 May 26 June 22 July 20 44.70 44.87 44.54 44.11 43.99 July 8, 1965 Aug. 31 Nov. 1 Dec. 2 Dec. 14 40.86 40.25 38.03 8.80 5.36 Nov. 29, 1966 Dec. 28 Jan. 31, 1967 Mar. 14 Apr. 18 22.37 22.45 22.35 29.32 31.48 Apr. 26 May 20 June 18 July 24 Aug. 21 36.55 36.96 42.35 44.29 43.92 Aug. 24 Sept. 23 Oct. 28 Nov. 23 Dec. 14 42.15 42.17 41.89 44.68 43.71 Dec. 29 Jan. 27, 1966 Mar. 1 Mar. 30 Apr. 26 6.79 22.53 35.64 36.83 38.87 June 1 July 6 Aug. 2 Sept. 1 Oct. 3 30.98 34.99 37.71 44.05 42.46 Sept. 19 Oct. 22 Nov. 20 15.65 31.93 42.69 Jan. 12, 1965 Feb. 8 Mar. 8 43.96 44.54 44.09 May 26 June 27 July 25 38.74 38.89 37.95 Nov. 1 Dec. 7 Jan. 4, 1968 41.22 41.36 43.75 Dec. 16 f Apr. 7 43.36 Aug. 30 36.96 Jan. 23, 1964 Mar. 2 44.61 44.57 May 4 June 18 43.62 41.48 Sept. 26 Oct. 31 36.00 21.14 f - dry Hd Temperature ( °C) Footnote --- 55 Well 14 (20-64.53-22-33) Owner. --U .S. Government-V.I. Government. Measuring point.--Top of 6-in casing, 3.6 ft above lsd. Name.--USGS-27 (Estate Thtu). Land elevation.--175 ft above msl. Location.--Lat 18° 20' 40", long 64° 53' 43". Highest water level.--20.42 ft below lsd, Jan. 27, 1966. Description.--Drilled unused water-table well, Lowest water level.--32.93 ft below lsd, Apr. 3, 1968. diam 6-in, cased 0-200, perforated 60-200. Records available.--Chemical analyses: September 1965 Depth.--200 ft. and August 1966. Aquifer.--Volcanic rocks of Cretaceous age. Water levels: 1965-68. Remarks.--Plugged. Measurement discontinued, April 1968. CHEMICAL ANALYSIS Temperature ( CC) I Footnote Hardness as CaCO3 Ca lcium, mag nesium carbona te Specific conducta nce (micromhos at 25°C) Hd Milligrams per liter Date of collection Discha rge (gpm ) Bicarbona te ( HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) Chloride ( Cl) Fluoride ( F ) Nitra te ( NO3 ) Orthophospha te (PO4 ) Dissolved solids calcula ted Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) _ - co ,.4 z - - a_ Tr; . 8 * 1(,) t ,,0 -, -, r-• z ?;- - ()io 2c E7) 12 51 325 580 20 28 282 0.9 11 -- * 1,060 240 (1 1,880 8.5 -- -- iept. 15, 1961 -- 39 0.00 -- 692 0 86 245 1.0 14 -- * 1,090 240 0 1,830 8.1 -- -- Wg. 29, 1966 -- 38 .00 0.00 30 40 357 * Residue on evaporation at 180°C. Water levels, In feet below land surface Water Water Water Water Date Date Date Date level level level level Dec. 14, 1967 31.45 Nov. 15, 1965 32.80 Apr. 26, 1966 22.15 Dec. 28, 1966 23.76 Jan. 30, 1967 24.52 Dec. 21 31.57 Nov. 26 31.50 May 10 22.68 23.32 Mar. 14 26.23 Jan. 4, 1968 31.88 Dec. 8 29.95 May 26 27.58 Jan. 9 31.92 Dec. 14 27.25 June 10 24.06 Apr. 18 26.52 Jan. 23 32.14 Jan. 3, 1966 21.85 June 27 24.77 June 1 28.66 Feb. 6 32.39 Jan. 17 20.72 July 11 25.42 July 6 25.75 Aug. 1 29.45 Feb. 21 32.59 Jan. 27 20.42 July 25 Feb. 14 20.55 Aug. 5 26.00 Sept. 1 30.13 Mar. 5 32.60 Mar. 15 21.32 Sept. 27 26.49 Oct. 3 31.01 Mar. 20 32.76 Apr. 3 32.93 Mar. 30 21.28 Oct. 31 23.00 Nov. 2 30.89 23.83 Dec. 7 31.38 Apr. 12 21.88 Nov. 29 56 Well 15 (20-64.53-6-33) Owner.--St. Thomas Real Estate. Land elevation.- -175 ft above msl. Location.--Lat 18° 20' 38", long 64° 53' 41'; Highest water level.--10.20 ft below lsd, Oct. 20, 1963. Description.--Dug water-table production well, Lowest water level.--827.29 ft below lsd, May 20, 1963. diem 7 ft. Records available.--Chemical analyses : February 1963, Depth.--34 ft. July 1967, and May 1968. Aquifer. --Alluvium of Quaternary age. Water levels: 1962-64. Measuring point.--Top of curb, 2.0 ft above lsd. Remarks.--Measurement discontinued, January 1964. CHEMICAL ANALYSIS Milligrams per liter Date of collection Discha rge (gpm ) Silica ( S102 ) Iron ( Fe ) Manganese ( Mn ) Calcium ( Ca Magnesium ( Mg ) Sodium ( Na Pota ssium ( K) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) :: 0 a) -o 0 _c0 Fluoride ( F ) Nitrate ( NO3 ) Orthophosphate ( PO4 ) Dissolved solids calculated Hardness as CaCO3 Calcium , magnesium Non- ca rbonate Specific conducta nce (micromhos at 25°C) Hd Temperature 1 °C) 1 Footnote 'eb. 21, 1963 -- 38 0.00 -- 52 uly 19, 1967 -- 28 .05 0.00 48 1ay 16, 1968 -- 26 -- .00 56 * Residue on evaporation at 180°C. Water Date level Dec. 17, 1962 14.74 Jan. 2, 1963 15.16 Jan. 7 15.22 Jan. 14 15.41 Jan. 21 15.66 a - pumping 27 380 768 0 49 248 0.9 43 -- * 1,290 240 0 2,010 8.0 27 -- 29 107 374 0 57 35 .3 68 -- * 641 239 0 858 8.0 -- -- 24 120148 340 8 -- 30 .8 145 4.8 -- 240 0 1,020 8.4 -- -- Water levels, in feet below land surface Water Water Water Date Date Date level level level Jan. 28, 1963 15.77 May 20, 1963 0 27.29 Oct. 20, 1963 10.20 Feb. 4 15.82 June 18 25.54 Dec. 16 10.74 Feb. 21 21.06 Aug. 3 17.00 Jan. 22, 1964 19.98 Mar. 23 17.17 Aug. 22 16.80 Apr. 22 17.03 Sept. 19 15.22 - - - - - - 57 40 -- -- -- 194 -- -- - 26 -- k u g . 22, 1963 -- -- -- -- -- -- -- -- -- 78 -- -- - 26 -- 1Nov. 1 -- -- -- -- -- -- -- -- 40 -- -- -- Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Oct. 2, 1962 14.65 Jan. 7, 1963 12.95 Mar. 23, 1963 16.38 Oct. 22, 1963 13.68 Oct. 9 14.94 Jan. 14 13.42 Apr. 22 17.03 Nov. 20 11.65 Oct. 29 5.65 Jan. 21 13.76 May 21 12.06 Dec. 16 11.90 Dec. 10 10.39 Jan. 28 14.15 June 18 13.70 Jan. 23, 1964 16.09 Dec. 17 11.27 Feb. 4 14.42 Aug. 22 14.40 Jan. 2, 1963 12.59 Feb. 21 1 5 . 1 4 Sept. 19 6.78 Well 17 (20-64.53-3-71) Owner.--H. E. Lockhart, Jr. Measuring point.--Top of curb, 2.8 ft above lsd. Name.--Donoe Dug Well. Land elevation. --180 ft above msl. Location.--Lat 18° 20' 17", long 64° 53' 58". Highest water level.--0.20 ft below lsd, May 20, 1963. Description. --Dug water-table production well, Lowest water level.--2.60 ft below lsd, Jan. 22, 1964. 9 by 7 ft. Records available.--Chemical analyses: 1962-63. Depth.--9 ft. Water levels: 1962-64. Aquifer. --Alluvium of Quaternary age. Remarks . --Measurement discontinued, January 1964. CHEMICAL ANALYSIS 10v. 20,1962 )ec. 17 'eb. ll, 1963 ,ug. 22 10v. 6 -- -- -- -- -- 30 28 28 -- -- 0.00 .00 .02 -- - -- -- 35 41 41 -- 33 29 25 -- 319 327 324 -- 748 752 750 -- 0 0 0 -- 32 48 35 -- 188 185 178 1.2 1.2 1.3 3.8 1.5 6.1 - - -- -- 1,010 -- * 1,050 -- -- 223 222 206 234 200 0 0 0 -- -- 1,700 8.1 26 -- 1,690 8.1 25 -- 1,670 8.1 24 -- -- -- 21 -- -- - 26 -- * Residue on evaporation at 180°C. Water levels, in feet below land surface Date Water level Date ,, Water level Date Water level Date Water level u Date of Date of collection collection Discharge (gpm ) Discha rge (gpm ) ,-,-). 2, g co .._. (73 c . - o - ., u, 7... o to c cn Manganese ( Mn ) Manganese ( Mn ) Calcium ( Ca ) '3 E - 0 Magnesium ( Mg Magnesium ( Mg ) 1 Sodium ( Na ) Sodium ( Na ( K ) Pota ssium Pota ssium ( K) Milligrams per liter Bicarbonate ( HCO3 ) Carbonate ( CO3 ) Sulfate ( SO4 Milligrams per liter Bicarbonate ( HCO3) Ca rbona te ( CO3 ) cn C.) '-' l'E' a)... cn - - 0 a)- .z'.0 a) -o o ..---; 8 a)y 0 Fluoride ( F) Fluoride ( F Nitra te ( NO3 ) Orthophosphate ( PO4 ) Nitrate ( NO3 ) Orthophosphate ( PO4 ) Dissolved solids Dissolved solids calculated calculated Ca lcium, m agnesium Non- carbonate Hardness as CaCO3 Ca lcium, mag nesium Non- carbonate Hardness as CaCO3 Specific conducta nce Specific conductance (micromhos at 25°C) (micromhos at 25 °C) Hd Hd Temperature (°C) Temperature ( °C) Footnote Footnote Owner.--H.E. Lockhart, Jr. Name.--Raphune Dug Well. Location.--Lat 18° 20' 17", long 64° 54' Description.--Dug unused water-table well, diam 20 ft. Depth.--32 ft. Aquifer. --Alluvium of Quaternary age. Well 16 (20-64.54-1-76) Measuring point.--Tcp of curb at lsd. Land elevation. --270 ft above msl. 24". Highest water level.--5.65 ft below lsd, Oct. 29, 1962. Lowest water level.--17 .03 ft below lsd, Apr. 22, 1963. Records available.--Chemical analyses: August and November 1963. Water levels : 1962-64. Remarks. --Measurement discontinued, January 1964. CHEMICAL ANALYSIS 1.15 Sept. 19, 1963 0.24 Oct. 2, 1 962 a0.40 Dec. 31, 1962 0.36 Apr. 22, 1963 .20 Oct. 22 1.30 Oct. 9 .42 Jan. 7, 1963 .32 May 20 Oct. 29 .35 Jan. 14 .35 June 18 1.15 Nov. 20 2.09 a2.35 Dec. 10 .83 Feb. 21 .69 July 24 1.52 Dec. 16 1.45 Aug. 22 81.64 Jan. 22, 1964 2.60 Dec;. 17 .41 Mar. 23 a - pumping 58 Well 18 (20-64.53-5-64) Owner.--S. Harthman. Measuring point.--Top of concrete cover, 2.0 ft above lsd. Name.--Harthman-5 Dug Well. Land elevation.--150 ft above msl. Location.--Lat 18° 20' 22", long 64° 53' 36". Highest water level.--0.46 ft below lsd, July 26, 1968. Description.--Dug water-table production well, Lowest water level.--4.24 ft below lsd, June 27, 1968. diam 6 ft. Records available .--Chemical analyses: 1966-69. Depth.--12 ft. Water levels: 1967-69. Aquifer.--Alluvium of Quaternary age. Remarks. --Measurement discontinued, February 1969. CHEMICAL ANALYSIS Hardness as CaCO3 Ca lcium, mag nesium Non- carbonate Specific conducta nce (micromhos at 25°C) Milligrams per liter Hd Temperature ( °C) Footnote Date of collection ) Discha rge (gpm -o rii iii Iron ( Fe ) Ma nganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids ca lculated Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) :7. 0 a) 7:1 rii - ;74 z E' f.i;• '8 cn a. 2 0 ,ug. 10, 1966 -- 34 0.00 0.00 40 24 400 724 0 106 252 1.1 6.2 -- * 1,120 198 0 1,800 8.0 -- - /lay 15, 1968 -- 35 -- .00 56 41 344 2.2 706 24 80 238 1.7 2.2 0.5 1,170 310 0 1,910 8.5 -- -- -- 36 .00 21 36 327 3.1 558 35 67 240 1.0 .0 .1 1,040 200 0 1,760 8.7 -- -- une 27 -- 33 .00 76 50 350 7.3 574 30 213 282 .9 23 1.3 1,350 395 0 2,170 8.5 -- -- mg. 26 )ec. 9, -- 32 .01 68 42 358 5.1 804 10 79 262 1.2 2.7 1.3 1,260 342 0 2,130 8.3 -- -- an. 9, 1969 -- 33 .00 64 38 335 4.7 788 0 74 242 1.1 2.7 1.2 1,180 316 0 2,000 8.2 -- -- * Residue on evaporation at 180°C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Jan. 9, 1969 0.64 Dec. 14, 1967 0.97 Mar. 20, 1968 0.77 July 26, 1968 0.46 Feb. 11 .67 Jan. 9, 1968 1.75 Apr. 23 2.19 Oct. 2 .62 Jan. 23 1.55 May 24 2.85 Nov. 6 .65 Feb. 21 1.80 June 27 4.24 Dec. 9 .57 59 Well 19 (20-64.53-20-56) • Owner . --U .S. Government-V.I. Government. Name.--USGS-25 (Estate Charlotte Amalie). Location.--Lat 18° 20' 24", long 64° 53' 27". Description.--Drilled water-table production well, diam 6-in, cased 0-210, slotted 100-200 ft. Depth.--210 ft. Aquifer.--Volcanic rocks of Cretaceous age Measuring point.--Top of 6-in casing, 2.5 ft above lsd. Land elevation.--196 ft above msl. Highest water level.--39.07 ft below lsd, Jan. 27, 1966. Lowest water level.--78.25 ft below lsd, May 3, 1968. Records available.--Chemical analyses: 1965-68. Water levels: 1965-69. Remarks.--Measurement discontinued, February 1969. CHEMICAL ANALYSIS Orthophospha te ( PO4 ) Dissolved solids calcula ted Hardness as CaCO3 Ca lcium , magnesium Non- ca rbonate ecSp ific conducta nce1 (micromhos at 25 °C pH Temperature (°C) Footnote Milligrams per liter Date of collection Discha rge (gpm ) cs, 0 - (1) ro c 0 2 " . • (7) Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium Na() Potassium ( K ) Bicarbonate ( HCO3 ) Carbona te ( CO3 ) Sulfate ( SO4 ) - _ Fluoride ( F ) 6 a).-,r) L . . . . . . - 0 -,) ,..0 d . ) C 0 70 285 0.9 0.0 -- * 1,240 166 0 2,070 8.2 -- -- ug. 30,1965 -- 26 0.00 -- 14 32 426 750 18 26 180 .8 1.2 -- * 1,020 336 0 1,680 8.4 28 -- )ec. 30 -- 43 .00 0.02 44 55 258 712 198 .8 5.7 -- * 1,080 276 0 1,780 8.3 28 -- ipr. 22, 1966 -- 40 .00 .00 45 40 318 780 0 42 4.3 0 1,240 255 0 2,060 8.0 -- -- /ay 16, 1968 -- 33 .00 .00 44 34 40011.1 826 0 61 250 1.3 Residue on evaporation at 180° G. Water levels, in feet below land surface Water Water Water Water Date Rite Date Date level level level level Sept. 1, 1965 57.23 Apr. 12, 1966 40.93 Dec. 29, 1966 43.77 l'eb. 6, 1968 70.57 Nov. 2 52.14 Apr. 26 43.06 Jan. 31, 1967 44.28 Apr. 3 75.68 Nov. 16 51.05 May 10 42.05 Mar. 14 45.32 May 3 78.25 Nov. 26. 50.07 May 26 42.32 Apr. 18 46.21 June 3 70.85 Dec. 8 48.88 June 10 42.78 June 1 49.85 Aug. 1 68.08 Dec. 14 44.83 June 27 43.27 July 6 51.24 Sept. 3 54.55 Dec. 22 42.96 July 11 43.83 Aug. 1 54.84 Nov. 5 54.22 Jan. 3, 1966 41.79 July 25 44.28 Sept. 1 51.43 Dec. 4 52.49 Jan. 17 39.59 Aug. 5 44.48 Oct. 3 61.56 Jan. 3, 1969 49.73 Jan. 27 39.07 Aug. 29 44.99 Nov. 1 54.69 l'eb. 5 a 50.64 Feb. 14 39.17 Sept. 27 45.24 Dec. 4 70.38 Mar. 15 40.17 Oct. 31 43.28 Dec. 7 54.07 Mar. 30 40.49 Nov. 29 43.32 Jan. 4, 1968 63.70 a - pumping - - -- 60 Well 20(20-64.53-14-48) Owner.--U.S. Government-V.I. Government. Measuring point.--Top of instrument platform, 2.55 ft above Name.--USGS-1 (Estate Tutu). lsd. Casing added and land filled, June 1969; new M.P. Location.--Lat 18° 20' 33", long 64° 53' 15% 9.0 ft above old land surface. Description.--Drilled unused water-table well, Land elevation.--180 ft above msl. diam 6-in, cased 0-13. Highest water level.--e 9.55 ft below lsd, Dec. 31, Depth.--73 ft. 1969. Aquifer.--Volcanic rocks of Cretaceous age. Lowest water level.--57.98 ft below lsd, May 5, 1968. Records available.--Chemical analyses: August 1964, January 1964, and May 1968. Remarks. --Recorder. Affected by nearby pumpage. CHEMICAL ANALYSIS Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conducta nce (microm hos at 25°C) Temperature (°C) Footnote Milligrams per liter Date of lle co ction Discha rge (gpm ) O '­ -.w 0 Cn. Manganese ( Mn ) Calcium ( Ca a) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) .... Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calcula ted Ca rbona te ( CO3 ) Sulfate ( SO4 ) -;0 ro - - c , 0 0 a)v V 0 2 0 -2 0 R3 X 0 Ea' aig. 13, 1963 -- -- 234 an. 2, 1964 36 0.00 -- 48 46 293 758 0 32 200 1.0 9.4 -- 963 309 0 1,670 7.9 28 -- 4ay 16, 1968 27 .09 0.00 56 40 21711.9 670 0 32 130 1.0 1.9 0.4 837 305 0 1,410 8.0 -- -- Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (in feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1964 5 -- -- 25.42 26.26 -- 29.45 30.53 31.35 32.40 33.30 34.69 35.61 10 -- 24.80 25.53 26.30 27.00 29.69 30.71 31.54 32.65 33.48 34.67 -- 15 -- 24.88 25.66 26.43 -- 29.96 30.57 31.78 32.99 33.87 34.88 -- 20 -- 24.97 26.78 26.63 -- 30.16 30.65 32.04 33.14 33.95 34.98 36.98 25 -- 25.07 25.91 -- -- 30.43 30.83 32.30 33.13 33.98 35.17 37.70 eom -- 25.20 26.98 -- 29.37 30.51 30.96 31.99 33.08 34.19 35.42 38.09 1965 5 38.47 40.61 54.35 50.80 55.00 50.20 50.85 51.95 52.00 50.20 45.10 39.55 10 38.67 50.09 44.80 51.10 53.00 50.45 51.35 -- 51.85 50.10 -- 39.65 15 39.25 50.66 45.55 51.75 52.60 50.60 51.35 52.00 -- 50.06 -- -- 20 -- 51.22 46.55 52.75 51.75 50.45 51.45 52.35 51.35 49.50 -- -- 25 39.82 52.91 47.65 -- 51.10 51.00 51.95 52.45 50.55 48.40 -- -- eom 40.12 53.40 49.75 57.60 50.35 51.20 52.25 51.95 50.30 48.10 39.85 -- 1966 5 27.40 -- 25.70 26.25 27.55 29.80 32.43 34.24 -- 35.10 33.99 35.63 10 27.00 25.85 26.50 27.95 29.90 33.23 34.32 36.43 35.06 34.15 35.75 15 26.20 -- 25.70 26.95 28.20 30.30 33.57 34.55 -- 33.82 34.69 36.16 20 25.80 -- 25.75 26.85 28.55 30.55 33.68 34.75 35.95 -- 35.10 36.80 25 25.75 -- 25.70 27.00 28.85 30.90 33.75 34.73 36.06 -- 35.18 37.10 eom 25.45 -- 25.70 27.35 29.35 31.40 34.20 36.25 35.19 33.33 35.63 37.10 1967 37.59 39.94 -- -- 46.75 47.65 49.50 51.15 h53.47 55.35 55.50 55.80 10 38.08 "0.35 42.00 45.05 -- 47.90 49.60 51.75 -- 55.60 55.55 55.95 15 -- 40.73 42.60 45.80 46.65 48.30 50.10 51.80 -- 55.05 55.55 56.05 20 5 38.82 40.66 43.50 46.30 46.75 -- 50.25 51.80 -- 54.80 55.45 56.15 25 39.00 -- 43.85 46.50 46.90 -- 50.35 52.95 -- 55.05 55.55 56.50 eom 39.50 -- 44.35 46.75 47.05 49.15 -- -- -- 55.30 55.70 56.55 1968 5 56.37 56.97 57.43 56.94 57.98 57.51 57.55 55.58 51.07 -- 52.13 48.65 56.43 57.07 57.43 56.67 57.11 57.52 57.51 51.09 51.05 -- 53.33 47.85 10 56.46 57.24 57.48 56.74 57.17 57.58 57.38 51.39 50.95 -- 53.95 46.85 15 56.35 57.35 57.38 56.80 57.19 57.61 57.25 51.38 -- -- 53.73 47.45 20 56.12 57.47 57.33 56.84 57.29 57.62 55.63 51.38 -- -- 53.89 47.55 25 eom 56.70 57.43 57.06 56.94 57.40 57.60 55.83 51.33 50.54 -- -- 47.50 1969 5 47.17 44.83 e40.22 e40.77 -- -- -- -- 10 47.18 -- -- 40.32 40.80 -- -- -- 15 47.26 -- -- 40.47 -- -- -- -- 20 46.90 44.93 39.95 40.59 -- -- -- -- -- h13.09 13.22 9.65 25 46.85 44.89 40.02 40.67 -- -- -- -- h13.26 -- -- -- eom 45.56 44.95 e40.12 e40.68 -- -- -- -- __ -- -- e9.55 eEsthnate-cl. hTape measurement. 61 Well 21 (20-64.53-15-58) Owner.--J. Tillet. Land elevation.--200 ft above msl. Location.--Lat 18° 20' 29", long 64° 53' 16". Highest water level.--38.40 ft below lsd, Jan. 2, 1964. Description . --Drilled water-table production well, Lowest water level.--94.18 ft below lsd, July 5, 1968. diam 6-in, cased 0-15. Records available. --Chemical analyses: 1963-68. Depth.--100 ft. Water levels: 1964-68. Aquifer.--Volcanic rocks of Cretaceous age. Remarks. --Mea surement discontinued, April 1969. Measuring point.--Top of 6-in casing, 1.5 ft above lsd. CHEMICAL ANALYSIS Milligrams per liter Date of collection Discha rge (gpm ) - O'' 0 N Specific conducta nce (micromhos at 25°C) Hd Temperature ( SC) Footnote Iron ( Fe ) Manganese ( Mn ) Calcium (Ca ) Magnesium (Mg ) Sodium ( Na ) Pota ssium (K) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) Chloride ( C1) Fluoride ( F) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calcula ted Hardness as CaCO3 Ca lcium, magnesium Non- ca rbonate kt. 8, 1963 -- 39 0.00 -- 30 52 266 680 0 32 185 1.1 16 *888 289 0 1,535 7.928 -- 4ay 13, 1964 -- 39 .00 -- 62 48 246 698 0 38 178 1.0 26 * 1,060 352 0 1,680 7.7 28 -- 4ay 26 -- 44 .00 -- 60 44 247 694 0 26 185 1.0 9 *967 330 0 1,650 8.0 -- -- me 25 -- 43 .00 -- 58 46 244 698 0 26 180 1.0 10 *965 334 0 1,650 7.928 -- ug. 25 -- 38 .00 -- 60 48 247 702 0 28 190 .7 13 *953 347 0 1,650 8.2 28 -- my 25,1966 -- 41 .00 0.00 62 49 250 712 0 30 192 .8 16 * 1,070 356 0 1,730 8.0 -- - /lay 19, 1967 -- 38 .06 .00 56 51 269 712 0 39 205 .8 23 * 1,050 349 0 1,750 7.7 -- -- ept. 1 -- 39 .00 .00 56 46 268 716 0 313 195 .6 11 -- * 1,060 328 0 1,720 8.0 31 -- an. 4, 1968 -- 43 .02 .00 68 64 259 822 0 27 195 1.0 23 -- * 1,060 435 0 1,760 7.7 27 -- pr. 3 -- 43 .00 .00 50 39 3021.5 720 0 48 210 .8 22 0.0 1,070 286 0 1,750 8.1 26 - /lay 15 -- 45 .00 .00 60 60 2671.5 756 0 45 192 1.3 26 .3 1,070 395 0 1,780 7.9 -- -- )ec. 4 -- 41 -- .00 39 52 2982.0 696 0 40 217 .7 44 .0 1,080 312 0 1,820 8.1 -- -- Residue on evaporation at 180° C. Water levels, in feet below land surface Water Water Water Water Date Date Dote Date level level level level Jan. 2, 1964 38.40 Sept. 29, 1964 47.80 June 14, 1965 a71.67 Oct. 31, 1966 51.23 Jan. 23 39.08 Oct. 13 48.49 June 21 a 71.61 Nov. 29 51.10 Feb. 3 39.40 Oct. 19 49.00 June 29 0 70.31 Dec. 28 a 54.50 . Feb. 10 39.52 Oct. 24 0 51.22 July 7 0 72.50 Jan. 31, 1967 55.35 Feb. 17 39.58 Nov. 2 49.39 July 21 68.60 Mar. 14 58.62 Mar. 5 40.02 Nov. 9 49.81 Aug. 5 68.69 Apr. 18 a 65.82 Mar. 9 40.23 Nov. 23 49.80 Aug. 21 69.55 June 1 a 66.94 Mar. 16 40.37 Nov. 30 50.40 Aug. 31 68.50 July 6 67.75 Mar. 24 40.65 Dec. 7 a53.16 Sept. 30 66.25 Aug. 1 a72.07 Mar. 30 41.00 Dec. 14 a54.40 Oct. 29 a65.48 Sept. 1 075.87 Apr. 7 41.01 Dec. 21 52.29 Nov. 12 0 58.09 Oct. 3 81.61 Apr. 13 41.10 Dec. 28 053.29 Nov. 26 55.75 Nov. 1 a86.10 Apr. 20 41.32 Jan. 4, 1965 056.30 Dec. 8 54.05 Dec. 5 085.78 May 5 41.67 Jan. 11 a 56.93 Dec. 14 47.28 Dec. 7 a85.67 May 11 41.96 Jan. 26 55.18 Dec. 27 42.45 Jan. 4, 1968 a85.72 May 13 42.05 Feb. 8 56.56 Jan. 3, 1966 42.27 Jan. 22 82.69 May 18 a 45.60 Feb. 15 57.59 Jan. 17 40.61 Mar. 5 92.26 May 26 44.35 Feb. 23 a 58.63 Jan. 27 40.42 Apr. 3 89.65 June 1 44.16 Mar. 2 60.81 Feb. 14 40.28 May 3 88.1' June 8 46.99 Mar. 8 61.85 Mar. 15 41.10 June 3 92.75 June 15 44.98 Mar. 15 66.10 Mar. 30 0 42.28 July 5 94.18 June 22 47.02 Mar. 23 70.08 Apr. 12 42.51 Aug. 1 83.35 June 29 46.55 Mar. 30 075.17 Apr. 26 42.79 Oct. 1 68.07 July 6 45.37 Apr. 6 75.61 May 10 43.14 Nov. 5 075.10 July 13 45.28 Apr. 19 74.32 May 26 44.09 Dec. 4 66.13 July 20 45.52 Apr. 26 081.62 June 8 45.40 Jan. 3, 1969 57.49 Aug. 10 46.40 May 3 75.59 June 27 46.50 Feb. 5 61.96 Aug. 24 46.94 May 15 71.68 July 11 49.83 Mar. 24 a 58.94 Aug. 31 46.93 May 18 69.28 July 25 48.79 Apr. 23 57.55 Sept. 9 47.71 May 24 69.00 Aug. 5 49.75 Sept. 14 48.19 June 2 67.31 Aug. 30 0 52.34 3 - pumping . Sept. 23 47.99 June 7 67.86 Sept. 27 50.93 62 Well 22(20-64.53-19-60) Owner. --U .S . Government-V.I. Government. Measuring point.--Top of 5-in casing, 2.0 ft above lsd. Name.--USGS-24 (Frenchman's Hill). Land elevation. --240 ft above msl. Location.--Lat 18° 20' 25", long 64° 53'04". Highest water level.--121.65 ft below lsd, Mar. 1, 1966. Description.--Drilled unused water-table well, Lowest water level.--137.42 ft below lsd, Oct. 20, 1967. diam 5-in. Records available.--Chemical analyses: August and December Depth.--222 ft. 1965. Aquifer. --Volcanic rocks of Cretaceous age. Water levels: 1965-67. Remarks. --Recorder discontinued, October 1967. CHEMICAL ANALYSIS Milligrams per liter Date of collection Discha rge (gpm ) Silica ( Si02 ) a) c Ot. Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfa te ( SO4 ) Chloride ( Cl) Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 \ Dissolved solids ca lcula ted Hardness as CaCO3 Ca lcium, mag nesium Non- ca rbonate Specific conducta nce (microm hos at 25°C) Hd Temperature ( °C) Foot note -- -- 350 -- -- 240 -- -- -- hug. 22,1965 -- -- -- -- -- 360 188 -- )ec. 9 )ec. 18 -- 32 0.00 0.01 59 54 348 632 16 62 360 0.8 8..1 -- * 1,290 369 0 2,220 8.428 -- *- • (3110 , ---- • Highest water level below land surface on the 5th, 10th, 15th, 20th, 2Jth, and end of each month from recorder graph (in feet) Day Jan Feb Mar Apr May iunT July I-Aug Sept Oct TNov Dec 1965 5 -- -- -- -- -- -- -- -- -- -- -- 129.67 10 -- -- -- -- -- -- -- -- -- -- -- -- IS -- -- -- -- -- -- -- -- -- -- 131.11 -- 20 -- -- -- -- -- -- -- -- 131.84 -- 130.72 -- 25 -- -- -- -- -- -- -- -- 131.89 132.16 130.33 -- eom -- -- -- -- -- -- -- -- 131.93 132.10 129.96 125.58 1966 124.44 121.98 121.68 122.00 122.52 123.20 123.89 124.95 -- 126.24 125.92 126.14 10 123.66 121.89 121.72 122.20 122.53 123.32 124.03 125.06 -- 126.32 125.92 -- 15 123.11 121.85 121.78 122.30 122.65 123.43 124.19 125.17 -- 126.03 125.93 -- 20 122.63 121.82 121.79 122.38 122.74 123.52 124.45 125.29 -- 126.07 125.95 -- 25 122.29 121.81 121.79 122.44 122.85 123.64 124.64 125.42 -- 126.01 125.99 -- eom 122.04 -- 121.79 122.51 122.99 123.75 124.82 125.63 126.22 125.95 126.07 126.15 5 1967 5 126.22 126.74 129.62 131.97 132.00 132.12 134.33 136.90 10 126.26 126.84 128.49 129.82 132.06 132.15 132.25 134.43 137.03 15 126.35 126.99 128.68 129.97 131.40 132.35 132.38 132.40 134.64 137.26 20 126.41 127.10 128.90 130.16 131.48 132.56 132.60 134.94 137.42 25 126.54 127.29 129.11 130.43 131.53 132.77 132.83 135.12 eom 126.63 127.37 129.28 130.49 131.75 131.87 133.17 135.37 --- 61 Well 23 (20-64.53-7-67) Owner.--St. Thomas Real Estate. Measuring point.--Top of cover, 1.2 ft above lsd. Location.--Lat 18° 20' 23", long 64' 53' 19". Land elevation.--150 ft above msl. Description.--Dug water-table production well, Highest water level.--9.59 ft below lsd, Feb. 4, 1963. diam 9 ft. Lowest water level.--14.35 ft below lsd, Dec. 10, 1962. Depth.--31 ft. Records available.--Water levels: 1962-63. Aquifer.--Alluvium of Quaternary age. Remarks.--Measurement discontinued, February 1963. Water Date level Dec. 10, 1962 a14.35 Dec. 17 a12.96 Owner.--W. Christensen. Water levels, in feet below land surface Water Water Date Date level level Dec. 31, 1962 a11.95 Jan. 14, 1963 10.11 Jan. 7, 1963 13.30 Jan. 21 10.05 Well 24 (20-64.53-9b-67) Date Water level Jan. 28, 1963 10.45 Feb. 4 9.59 Location.--Lat 18" 20' 20", long 64° 53' 19". Description.--Drilled water-table production well, diam 6-in, cased 0-85. Depth.--107 ft. Aquifer. --Volcanic rocks of Cretaceous age. Measuring point.--Top of 6-in casing, 0.4 ft above lsd. Land elevation.--137 ft above msl. Highest water level.--25.43 ft below lsd, Mar. 24, 1969. Lowest water level.--74.81 ft below lsd, Nov. 5, 1968. Records available.--Chemical analyses: 1967-68. Water levels: 1967-69. Remarks.--Well redrilled mid-1968. Measurement discontinued, March 1969. CHEMICAL ANALYSIS I Temperature _( °C) I Footnote ..— Specific conducta nce (7) (microm hos at 25°C) o Hd Milligrams per liter Hardness Discha rge (gpm ) c^' Calcium ( Ca ) C7) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K ) cr, Bicarbonate CD FIC03 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) -•o -• as CaCO3 ---o. va, Nitra te ( NO3 ) Orthophosphate ( PC4 ) 4-.0 c2 ta' 4' A 6 u --. - .... Ca lcium, 0, magnesium Non- ca rbonate cn ci a u I) 8 T.'0 (0 C c: -5 a u .-4 CP C 0 a .7! a... n L. -4- .. (/) o vlay 19, 1967 160 0.9 * 896 37 0.01 0,01 uly 20 40 .01 .02 48 39 251 612 0 44 188 .8 15 -- * 949 280 0 1,560 7.8 37 -- an. 4, 1968 40 .00 .00 52 41 323 746 0 50 225 1.2 23 -- * 1,060 300 0 1,800 7.9 26 -- )pr. 3 41 .00 .00 15 36 314 1.5 484 33 59 250 .8 22 0 1,010 186 0 1,710 8.7 26 -- viay 16 41 .00 .00 50 49 3161.3 688 0 54 255 1.5 17 0 1,120 325 0 1,91)) 7.9 -- -- )ec. 4 40 .00 52 42 304 1.6 644 20 56 240 .9 15 0 1,090 302 0 1,840 8.5 -- -- Residue on evaporation at 180° C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Aug. 16, 1967 49.46 Feb. 6, 1968 065.79 Aug. 1, 1968 58.77 Feb. 5, 1969 26.45 Nov. 1 66.41 Mar. 5 57.57 Oct. 1 44.28 Mar. 24 25.43 Dec. 4 57 . 62 Apr. 3 64.34 Nov. 5 a 74.81 Dec. 7 67.50 May 3 57.29 Dec. 4 0 36.04 Jan. 4, 1968 69.12 June 3 51.36 Jan. 3, 1969 0 44.20 a - pumping e - estimated - - 64 Well 25 (20-64.53-21-65) Owner.--U.S. Government-V.I. Government. Measuring point.--Top of 6-in casing, 2.1 ft above lsd. Name.--USGS - 26 Land elevation.--135 ft above msl. Location.--Lat 18° 20' 20", long 64° 53' 32". Highest water level.--15.14 ft below lsd, May 26, 1969. Description.--Drilled unused water-table well, Lowest water level.--29.30 ft below lsd, June 27, 1 968. diam 6-in, cased 0-155, perforated 75-155. Records available.--Chemical analyses: 1965-69. Depth. --250 ft. Water levels : 1965-69. Aquifer.--Volcanic rocks of Cretaceous age. Remarks . --Mea surement discontinued, July 1969. CHEMICAL ANALYSIS Date of collection Discha rge (gpm)i O 0 _ n , cn Ma nganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) uN4 Z --- E . ti Milligrams per liter Orthophosphate ( PO4 ) Dissolved solids calculated Hardness as CaCO3 Ca lcium, mag nesium Non- ca rbonate Specific conductance (micromhos at 25°C) 1 Temperature ( °C) Footnote Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfa te ( SO4 ) - 0 8 _ Fluoride ( F ) .., T. 0 Z ept. 9, 1 965 -- 34 0.02 - 18 40 293 600 6 i6 215 0.9 3.0 -- *955 210 0 1,680 8.3 29 -- -- 318 -- -- -- 27 -- ,ug . 10 -- 38 .0Q 0.00 56 46 354 710 0 1")0 250 1.4 4.5 -- * 1,230 328 0 1 ,930 8.0 -- -- ,ug. 17 -- -- -- -- -- -- -- -- -- 290 -- -- -- -- 336 -- -- -- 27 -- ,ug . 22 -- -- -- -- -- -- -- 508 -- -- -- -- May 16, 1968 -- 34 .0Z .00 14 44 280 1.2 580 18 6.4 215 1.0 .2 0.0 899 220 0 1,560 8.5 -- -- une 27 -- 5.4 -- .00 4.8 37 288 1.5 528 31 2.0 220 .6 .2 .2 851 164 0 1,540 8.8 -- -- uly 26 -- 3.1 -- .02 9.6 37 289 1.5 542 26 5.6 215 .6 1.5 .0 856 176 0 1,550 8.6 -- -- A Residue on evaporation at 180° C. Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Nov. 2, 1965 26.76 Apr. 26, 1966 16.95 July 6, 1967 20.95 Apr. 23, 1968 25.60 Nov. 16 20.95 May 10 18.19 Aug. 1 21.54 May 3 26.03 Nov. 26 20.20 May 26 18.27 Sept. 1 22.67 May 24 27.38 Dec. 8 20.00 June 10 18.40 Oct. 3 23.66 June 3 28.03 Dec. 14 18.17 June 27 18.60 Nov. 1 21.47 June 27 29.30 Dec. 22 18.43 July 11 18.84 Dec. 4 22.68 July 26 24.39 Dec. 28 18.05 July 25 18.60 Dec. 7 22.88 Aug. 26 21.46 Dec. 29 18.08 Aug. 5 18.99 Dec. 14 22.93 Oct. 2 21.07 Dec. 30 18.18 Sept. 27 18.64 Jan. 4, 1968 24.03 Nov. 6 21.04 Jan. 3, 1966 18.20 Oct. 31 17.84 Jan. 9 24.14 Dec. 9 19.97 Jan. 17 17.92 Nov. 29 18.14 Jan. 23, 1968 24.56 Jan. 9, 1969 19.93 Jan. 27 18.09 Dec. 28 18.21 Feb. 6 24.79 Feb. 11 19.32 Feb. 14 18.20 Jan. 31, 1967 18.26 Feb. 21 25.05 Mar. 26 18.42 Mar. 15 18.04 Mar. 14 18.70 Mar. 5 24.59 Apr. 24 18.29 Mar. 30 17.94 Apr. 18 19.35 Mar. 20 24.28 May 26 15.14 Apr. 12 18.15 June 1 19.75 Apr. 3 24.82 July 23 17.35 Well 26 (20-64.53-1-86) Owner.--S. Mylner. Measuring point.--Top of curb, 1.5 ft above lsd. Name.--Mt. Zion Dug Well. Land elevation. --120 ft above msl. Location.--Lat 18° 20' 11", long 64° 53' 28". Highest water level.--0.49 ft below lsd, Apr. 30, 1963. Description.--Dug water-table production well, Lowest water level.--Dry. diam 11 ft. Records available.--Chemical analyses: 1962-67. Depth.--18 ft. Water levels: 1958-69. Aquifer. --Alluvium of Quaternary age. Remarks. --Recorder used from April to May 1963. Measurement discontinued, April 1969. - - -- -- -- -- -- 65 CHEMICAL ANALYSIS Milligrams per liter Hardness as CaCO3 700 122°- c.,. - _ X Hd c cn 0 0 a) - E T.: a) ...., Orthophospha te ( PO4 ) Dissolved solids 1 calcula ted 1 Ca lcium, mag nesium Non- carbonate Specific conducta nce (micromhos at 25°C) Temperature ( °C) Footnote Date of collection Discha rge (gpm ) - Magnesium ( Mg ) 1 Sodium ( Na ) Pota ssium ( K) Carbona te _1 ( CO3 ) Sulfate ( SO4 ) Chloride ( C1) Manganese ( Mn ) it, a x T.) o a _o .U. o ._.. 4.,,... z -.8 -65 4. 0 *Co' )ec. 17,1962 -- 33 0.02 - 35 40 402 818 0 40 285 1.0 11 -- * 1,310 252 0 2,100 8.2 27 -- 'eb. 21, 1963 -- 33 .02 - 36 28 412 812 0 40 270 1.1 12 -- * 1,300 205 0 2,050 8.2 26 -- Jov. 6 156 -- -- -- 27 -- uly21, 1967 26 .05 0.02 40 41 324 698 8 16 262 .6 .6 -- 1,130 268 0 1 ,830 8.3 26 -- Residue on evaporation at 180° O. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Mar. 19, 1958 5.06 Feb. 29, 1960 14.26 Mar. 1, 1961 3.10 Oct. 9, 1962 3.57 Mar. 26 5.22 Mar. 31 15.70 Apr. 1 3.07 Oct. 29 3.37 Apr. 2 4.91 Apr. 30 13.53 May 1 3.04 Dec. 10 4.31 Apr. 9 5.55 May 10 4.11 June 1 3.11 Dec. 17 5.16 Apr. 16 5.51 May 19 3.56 June 16 3.90 Dec. 31 6.26 Apr. 23 5.18 June 3 4.18 July 1 3.18 Jan. 7, 1963 4.18 May 2 5.44 July 31 3.95 Aug. 1 3.29 Jan. 14 4.51 May 6 3.78 Aug. 31 4.15 Sept. 1 3.27 Jan. 21 5.17 May 17 3.66 Sept. 6 3.71 Oct. 1 3.49 Jan. 28 4.48 May 28 3.80 Sept. 12 3.94 Nov. 2 2.73 Feb. 4 4.34 June 5 3.70 Oct. 1 3.45 Mar. 1, 1962 2.17 Feb. 21 4.96 June 11 3.76 Nov. 1 3.38 Apr. 1 1.95 Mar. 12 5.60 June 19 3.87 Dec. 1 3.43 May 1 2.41 Mar. 23 6.63 June 24 3.84 Jan. 2, 1961 3.27 June 1 3.15 Feb. 23, 1960 14.31 Feb. 2 2.97 Oct. 3 a 3.60 Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (in feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1963 5 -- -- -- 3.57 -- -- -- -- -- -- -- 10 -- -- -- -- 2.80 -- -- -- -- -- -- -- 15 -- __ __ __ -- -- 3.51 -- -- -- -- -- 20 __ __ __ __ 3.80 __ __ 25 __ __ __ 4.93 3.85 -- -- -- -- -- -- __ eom -- __ -- .49 4.03 -- -- -- -- -- -- -- Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level June 18, 1963 4.82 Jan. 12, 1965 f May 26, 1966 a 4.88 Oct. 3, 1967 f Sept. 19 4.79 Feb. 8 f June 27 7.06 Nov. 1 16.65 Oct. 22 5.98 Mar. 8 f July 25 7.79 Dec. 4 f Nov. 20 5.66 Apr. 7 f Aug. 29 9.22 Jan. 4, 1968 f Dec. 16 5.75 May 4 f Sept. 26 8.68 Apr. 3 f Jan. 22, 1964 9.10 June 18 f Oct. 31 5.15 May 3 f Mar. 3 11.05 July 8 f Nov. 29 5.02 June 3 f Mar. 26 11.17 Aug. 31 f Dec. 28 4.83 Aug. 1 f Apr. 22 11.23 Nov. 2 f Jan. 31, 1967 5.23 Dec. 4 f May 26 13.53 Dec. 2 12.59 Mar. 14 7.37 Jan. 3, 1969 15.65 June 22 13.23 Dec. 14 -1.48 Apr. 3 8.61 Feb. 5 12.53 July 20 12.92 Dec. 29 5.91 Apr. 18 9.55 Mar. 24 7.26 Aug. 24 14.45 Jan. 27, 1966 4.90 June 1 10.47 Apr. 23 4.74 Sept. 23 14.90 Mar. 1 4.62 July 6 12.46 Oct. 26 a16.02 Mar. 30 a4.39 Aug. 1 13.74 Nov. 23 15.66 Apr. 26 5.70 Sept. 1 15.09 a - pumping f - dry 66 Well 27 (19-64.52-11-43) Owner.--V.I. Government. Measuring point.--Top of manhole, 3.0 ft above lsd. Name.--Brookman Dug Well. Land elevation.--30 ft above msl. Location.--Lat 18° 19' 35", long 64° 52' 44". Highest water level.--2.23 ft below lsd, May 6, 1958. Description.--Dug water-table well. Lowest water level.--10.9 ft below lsd, April 2, 1960. Depth.--19 ft. Records available.--Water levels: 1958 and 1960. Aquifer.--Alluvium of Quaternary age. Remarks.--Well destroyed, May 1960. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level May 6, 1958 2.23 June 5, 1958 2.45 June 24, 1958 4.11 Apr. 2, 1960 10.9 May 16 3.00 June 11 3.29 Feb. 23, 1960 10.81 May 2 3.5 May 28 3.44 June 19 3.91 Feb. 29 10 . 6 Well 28 (19-64.52-13-43) Owner.--V.I. Government. Measuring point.--Top of curb, 4.5 ft above lsd. Name.--Red Tank Dug Well (Brookman). Land elevation. --30 ft above msl. Location.--Lat 18° 19' 35", long 64° 52' 44". Highest water level.--3.63 ft below lsd, May 20, 1963. Description.--Dug water-table production well, Lowest water level .--9.79 ft below lsd, Mar. 23, 1963. diam 4 ft. Records available.--Chemical analyses: December 1962 Depth.--19 ft. and August 1963. Aquifer.--Alluvium of Quaternary age. Water levels: 1962-64. Remarks.--Measurement discontinued, April 1964. CHEMICAL ANALYSIS Nitrate ( NO3 ) Orthophosphate ( PO4 ) Dissolved solids calculated Hardness as CaCO3 Calcium, magnesium Non- carbonate Specific conducta nce (micromhos at 25°C) Milligrams per liter Hd Temperature ( °C) Footnote Date of collection Discha rge (gpm ) Iron ( Fe ) Manganese ( Mn ) Calcium ( Ca Magnesium ( Mg ) Sodium ( Na Potassium ( K) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) --.„. :-_,- 0 0 0 in ro 0 cn - a ,,a) C., v 4-. ..-4 V. , ,o, 6 0 .- :C.0 .in cn sec. 17, 1962 29 0.00 -- 52 20, 1963 -- -- Residue on evaporation at 180°C. Date Water level Dec. 10, 1962 7.19 Dec. 17 7.42 Dec. 31 6.50 Jan. 7, 1963 5.89 Jan. 14 6.49 Jan. 21 6.69 a - pumping 43 488 898 18 27 405 0.8 0.0 -- Water levels, in feet below land surface Date Water level Date Water level Jan. 28, 1963 7.06 June 18, 1963 8.15 Feb. 4 5.81 July 24 a7.08 Feb. 21 6.84 Aug. 20 5.13 Mar. 23 9.79 Sept. 19 3.87 Apr. 22 5.63 Oct. 22 6.02 May 20 3.63 Nov. 19 6.46 * 1,520 306 270 Date Dec. 16, 1963 Jan. 23, 1964 Mar. 2 Mar. 26 Apr. 22 0 2,500 8.3 27 -- Water level 5.59 6.77 7.60 6.64 7.17 __ 67 Well 29 (19-64.52-18-43) Owner. --U .S . Government-V. I. Government. Measuring point.--Top of instrument platform, 2.10 Name . --USGS - 11 ( Brookman ) . ft above lsd. Location . --Lat 18° 19' 35", long 64° 52' 44". Land elevation. --30 ft above msl. Description. --Drilled unused water-table well, Highest water level. --5.91 ft below lsd , Oct. 17 , 1966. diam 6-in, cased 0-38, slotted 18-38 ft. Lowest water level . --16.58 ft below lsd , July 3, 1968. Depth . - -60 ft. Records available.--Chemical analyses: January 1964 Aquifer. --Alluvium of Quaternary age. and January and June 1969. Water levels : 1964-68. Remarks . --Measurement discontinued, July 1968. CHEMICAL ANALYSIS Hd Temperature (°C) Footnote w Orthophospha te ( PO4 ) Dissolved solids calculated Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conductance (micromhos at 25°C) Milligrams per liter Date of collection Discharge (gpm ) Manganese ( Mn ) Calcium ( Ca Magnesium ( Mg ) Sodium ( Na Pota ssium ( K ) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) - O 0 0 co - Fluoride ( z 22 .... _ - _ -- m c c7i 4,w r 5 7c.' cn 0 Z. an. 24,1964 26 0.00 -- 74 108 718 848 0 120 962 0.5 15 -- * 2,380 628 0 4,240 7.8 28 -- an. 21,1969 -- -- 0.0 6 -- -- 4,590 -- 28 -- une4 -- -- - __ -- -- -- 1010 -- -- -- __ __ __ -- Residue on evaporation at 180°C. Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph ( in feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1964 5 -- -- 9.51 10.21 10.24 10.78 11.29 11.04 11.37 -- 11.04 11.20 10 -- -- 9.64 10.29 10.31 10.89 11.32 11.08 11.50 -- 11.10 11.32 15 -- -- 9.77 10.33 10.41 10.98 11.31 11.19 11.58 -- 10.95 11.45 20 -- 9.23 9.84 10.38 10.49 11.09 11.28 11.31 11.66 -- 10.97 11.60 25 -- 9.33 10.03 10.30 10.66 11.20 11.27 11.36 11.06 -- 11.04 11.72 eom -- 9.41 10.07 10.22 10.76 11.26 11.19 11.31 10.70 10.79 11.09 11.82 1965 5 11.92 12.37 12.69 -- 12.94 10.79 11.18 12.34 12.89 11.43 7.19 7.08 10 11.98 12.40 12.73 12.99 12.73 10.57 11.40 12.35 12.84 11.41 6.36 7.29 15 12.06 12.48 -- 13.00 12.45 10.61 11.57 12.54 12.80 11.49 6.92 7.29 20 12.16 12.54 -- 13.04 12.12 10.68 11.79 12.70 12.54 10.58 7.21 7.28 25 12.23 12.56 -- 13.13 11.74 10.98 12.00 12.76 11.92 8.13 7.65 7.28 eom 12.32 12.63 -- 12.97 11.07 11.09 12.17 12.84 11.61 7.97 6.84 7.28 1966 5 6.74 7.00 8.17 7.77 8.08 9.13 10.18 10.03 9.88 7.99 7.50 7.67 10 6.98 7.32 8.36 8.11 8.31 -- 10.42 9.85 9.88 7.99 7.88 7.58 15 6.33 7.57 8.34 8.39 8.47 -- 10.56 9.74 9.35 5.99 8.05 7.68 20 6.48 7.73 8.00 8.14 8.56 -- 10.61 9.80 9.20 6.14 8.18 7.90 25 6.87 7.88 7.69 7.76 8.67 -- 10.38 9.89 9.17 6.65 7.77 7.73 eom 6.86 8.05 7.68 7.76 8.85 -- 10.20 9.74 8.33 7.11 7.75 7.48 1967 5 7.69 8.74 -- 10.01 11.04 10.91 11.40 11.97 12.58 13.03 11.20 11.87 10 8.05 8.89 9.40 10.29 -- 11.07 11.50 12.06 12.66 13.00 11.29 12.00 15 8.38 9.08 9.53 10.44 10.98 11.19 11.57 12.14 12.72 11.80 11.32 12.11 20 8.46 9.15 9.61 10.58 10.76 -- 11.61 12.24 12.81 11.49 11.37 12.26 25 8.54 9.29 9.74 10.81 10.69 -- 11.70 12.34 12.88 11.37 11.54 12.41 eom -- 9.36 9.90 10.92 10.82 11.28 -- 12.45 13.01 11.18 11.70 12.59 1968 5 12.72 13.46 13.70 14.35 15.32 16.02 16.49 -- -- -- -- -- 10 12.82 13.55 13.75 14.55 15.42 16.13 16.41 -- -- -- -- -- 15 12.96 13.59 13.80 14.72 15.54 16.22 15.40 -- -- -- -- -- 20 13.10 13.61 13.85 14.87 15.65 16.31 -- -- -- -- -- -- 25 13.22 13.65 13.90 15.03 15.77 16.39 -- -- __ -- -- -- eom 13.34 13.63 14.09 15.19 15.91 16.48 -- -- -- -- -- -- 68 Well 30 (19-64.52-14-641 Owner. --V .I. Government. Measuring point.--Top of cover, 4.0 ft above lsd. Name.--Nadir Dug Well. Land elevation.--20 ft above msl. Location.--Lat 18° 19' 21", long 64° 52' 38". Highest water level.--2.64 ft below lsd, Dec. 14, 1965. Description.--Dug water-table production well, Lowest water level.--14.92 ft below lsd, Apr. 20, 1960. diam 10 ft. Records available.--Chemical analyses: August and Depth.--15 ft. November 1963. Aquifer.--Alluvium of Quaternary age. Water levels: 1958, 1960-69. Remarks.--Measurement discontinued, February 1969. CHEMICAL ANALYSIS Milligrams per liter Hardness as CaCO3 Ca lcium, magnesium Non- carbona te Specific conducta nce (micromhos at 25°C) Date of collection Discha rge (gpm ) O r .s.)., up Iron ( Fe ) Manganese ( Mn ) Calcium ( Ca Magnesium ( Mg ) Sodium ( Na Potassium ( K) Bicarbona te ( HCO3 ) Ca rbona te ( CO3 ) Sulfa te ( SO4 ) 7, C)- a> -a 8 0 :z. Fluoride ( r. .9., Orthophospha te ( PO4 ) Dissolved solids ca lcula ted -7--0 ',-: X a _ Z iug. 21,1963 -- -- -- -- -- -- -- -- -- -- 265 -- -- -- -- 322 -- Jov. 5 -- -- -- -- -- -- -- -- -- 500 -- -- -- -- 202 -- Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level May 2, 1958 11.78 Oct. 3, 1962 2.89 July 20, 1964 10.75 Nov. 29, 1966 5.48 May 6 7.60 Oct. 9 3.60 Aug. 24 11.08 Dec. 28 5.86 May 16 6.57 Oct. 29 3.17 Sept. 23 11.02 Jan. 31, 1967 7.04 May 22 8.00 Dec. 3 6.01 Oct. 28 10.89 Mar. 14 9.53 May 28 6.72 Dec. 10 6.38 Nov. 23 11.13 Apr. 18 9.84 June 5 7.00 Dec. 17 6.70 Dec. 14 11.33 June 1 10.58 June 11 6.32 Dec. 31 6.89 Jan. 12, 1965 11.61 July 6 10.85 June 19 June 24 7.50 8.14 Jan. 7, 1963 Jan. 14 6.63 6.56 Feb. 8 Mar. 8 11.86 12.01 Aug. 2 Sept. 1 11.15 11.41 Feb. 23, 1960 14.53 Jan. 21 6.71 Apr. 8 12.53 Oct. 3 11.60 Feb. 29 14.17 Jan. 28 6.92 May 4 11.92 Nov. 1 11.05 Apr. 20 14.92 Feb. 4 6.94 June 18 11.46 Dec. 14 11.31 May 2 13.17 Feb. 21 6.92 July 8 11.77 Jan. 4, 1968 11.56 May 10 6.20 Apr. 22 5.25 Aug. 31 11.53 Feb. 2 11.74 May 18 6.40 May 20 2.67 Nov. 2 8.18 Mar. 5 11.88 June 2 July 10 6.17 7.00 June 18 July 24 5.85 6.20 Dec. 2 Dec. 14 3.30 2.64 Apr. 3 May 3 11.80 11.53 Aug. 5 7.00 Aug. 21 6.18 Dec. 29 2.88 June 3 11.44 Sept. 16 June 16, 1961 5.82 9.59 Sept. 19 Oct. 22 3.66 6.37 Jan. 27, 1966 Mar. 1 3.68 4.01 July 3 Aug. 1 11.42 9.43 Nov. 2 Nov. 29 5.80 5.25 Nov. 19 Dec. 16 7.62 7.14 Mar. 30 Apr. 26 6.61 6.35 Sept. 3 Oct. 1 7.35 6.38 Dec. 29 5.92 Jan. 23, 1964 8.36 May 26 8.07 Nov. 4 7.92 Jan. 29, 1962 5.96 Mar. 2 9.19 June 27 9.35 Dec. 4 3.49 Feb. 28 6.46 Mar. 26 9.60 July 2t 9.85 Jan. 3, 1969 4.27 Mar. 29 8.08 Apr. 22 9.89 Aug. 30 10.23 Feb. 5 4.04 Apr. 27 9.23 May 26 10.45 Sept. 26 10.30 June 1 8.73 June 22 10.82 Oct. 31 3.72 Temperature ( CC) 1 Footnote 69 Well 31 (19-64.52-15-631 Owner.--V.I. Government. Measuring point.--Top of cover, 0.0 ft above lsd. Name.--Nadir Abattoir Dug Well. Land elevation.--15 ft above msl. Location.--Lat 18° 19' 19", long 64° 52' 43". Highest water level.--2.34 ft below lsd, Sept. 16, 1960. Description.--Dug water-table production well, Lowest water level.--8.00 ft below lsd, May 2, 1958. diam 3.5 ft. Records available.--Chemical analyses: December 1962 Depth.--14 ft. and February and November 1963. Aquifer.--Alluvium of Quaternary age. Water levels: 1958, 1960-63. Remarks. --Measurement discontinued, December 1963. CHEMICAL ANALYSIS Date of collection Discha rge (gpm ) 1 - O - - - 0(.) C N Milligrams per liter Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na Pota ssium ( K ) Bicarbonate (HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) 1 Chloride ( C1) Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calcula ted Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conducta nce (micromhos at25°C) Hd Temperature ( °C) Footnote 40 365 0.6 0.0 -- * 1,300 296 0 2,210 8.2 27 -- sec. 17, 1962 -- 26 0.00 -- 43 46 405 756 0 63 455 .6 .2 -- * 1,570 357 0 2,610 8.1 27 -- 'eb. 21, 1963 -- 26 .02 -- 64 48 473 826 0 -- -- -- 304 -- -- -- 29 -- Vov. 5 -- -- -- Residue on evaporation at 180°C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level a6 39 Feb. 19, 1958 4.04 May 22, 1958 2.84 Feb. 28, 1962 6.0 Feb. 21, 1963 . 4.5 Mar. 23 7.48 Feb. 27 4.65 May 28 3.10 Mar. 29 Mar. 5 5.15 June 5 3.32 Apr. 27 5.4 Apr. 22 a 4.80 a 2.84 Mar. 11 5.46 June 11 3.05 June 1 5.0 May 20 3.68 Oct. 3 a2.77 June 18 5.07 Mar. 19 6.10 June 19 4.13 Oct. 9 a 3.60 July 24 a 5.66 Mar. 27 6.64 June 24 Apr. 2 6.83 May 18, 1960 2.59 Oct. 29 83.26 Aug. 20 5.58 a3 59 Dec. 10 a5.92 Sept. 18 . Apr. 11 7.40 Sept. 16 2.34 Apr. 17 7.70 June 16, 1961 5.63 Dec. 17 a6.14 Oct. 22 5.71 87 15 Apr. 23 7.51 Nov. 2 2.50 Dec. 31 6.31 Nov. 19 . 3.2 Jan. 14, 1963 a 5.96 Dec. 16 86.58 May 6 5.27 Dec. 29 2.5 Jan. 21 6.13 May 16 3.20 Jan. 29, 1962 2.7 Jan. 28 a 6.40 May 2 8.00 Nov. 29 a - pumping - - -- 70 Well 32 (18-64.53-4-02) Owner . --Unknown . Measuring point.--Top of curb, 2.3 ft above lsd. Name.--Bolongo Bay Dug Well. Land elevation. --15 ft above msl. Location.--Lat 18° 18' 59", long 64° 53' 51". Highest water level.--1.74 ft below lsd, May 20, 1963. Description.--Dug unused water-table well, Lowest water level.--3.97 ft below lsd, Jan. 23, 1964. diam 8 ft. Records available. --Chemical analyses: August and Depth.--18 ft. November 1963. Aquifer. --Alluvium of Quaternary age. Water levels: 1963-64. Remarks. --Measurement discontinued, January 1964. CHEMICAL ANALYSIS Lug. 20,1963 -- -- -- -- -- 2,755 -- -- -- Jov. 5 -- -- __ -- -- -- 4,350 -- -- 1,530 -- -- - 28 -- Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level May 20, 1963 1.74 Aug. 20, 1963 3.08 Oct. 22, 1963 2.88 Dec. 16, 1963 3.46 June 18 3.29 Sept. 19 2.43 Nov. 19 3.44 Jan. 23, 1964 3.97 July 24 3.32 Well 33 (19-64.54-1-48) Owner. --V .I. Government. Measuring point. --Top of curb, 2.5 ft above lsd. Name.--French Bay Gut Dug Well. Land elevation. --280 ft above msl. Location.--Lat 18° 19' 31", long 64° 54' 16". Highest water level.--4.87 ft below lsd, Sept. 18, 1963. Description.--Dug water-table production well, Lowest water level.--7.16 ft below lsd, Dec. 16, 1963. diam 7 ft. Records available.--Chemical analyses: August and Depth.--13.6 ft. November 1963. Aquifer. --Alluvium of Quaternary age. Water levels: 1962-63. Remarks. --Measurement discontinued, December 1963. CHEMICAL ANALYSIS 330 -- 652 -- -- -- ug . 20,1963 -- -- -- -- -- -- -- 730 -- 404 -- - 26 -- lov. 6 -- -- -- Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Date of Date of co llection co llection Discha rge (gpm ) to 6 0 :-..' ..-.. ••••••• _ o N cn ,... (0 .Z a)0, E a.tn Manganese ( Mn ) Calcium ( Ca ) Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Potassium ( K ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K ) Milligrams per liter ^ Bicarbonate ( HCO3 ) Carbonate ( CO3 ) co -5 ‘,., co 4..) ---. CO O Chloride ( C1) Fluoride ( F) Milligrams per liter Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) 0 9, 11. 0 0 -1.; Fluoride ( F ) Nitrate ( NO3 ) Nitrate ( NO3 ) Orthophosphate ( PO4 ) Orthophosphate ( PO4 ) Dissolved solids Dissolved solids calculated calculated Ca lcium, magnesium Hardness as CaCO3 Ca lcium, magnesium Non- carbonate as CaCO3 Hardness • 0 0 z f., cc (1., 4, 0 4:1 Specific conducta nce (micromhos at 25°C) Specific conducta nce (micromhos at 25°C) Hd Temperature ( °C) Temperature (°C) - Footnote 1 Footnote Oct. 2, 1962 Dec. 17 4.92 6.03 Mar. 23, 1963 Apr. 26 6.95 5.94 July 24, 1963 Aug. 20 6.86 6.70 Nov. 29, 1963 Dec. 16 5.94 7.16 Jan. 18, 1963 Feb. 21 6.09 6.41 May 20 June 18 4.94 6.44 Sept. 18 Oct. 22 4.87 5.19 - - 71 Well 34 (19-64.54-2-54) Owner.--J. Robertson. Measuring point.--Top of curb, 1.5 ft below lsd. Name.--Morningstar Bay Gut Dug Well. Land elevation.--190 ft above msl. Location.--Lat 18° 19' 29", long 64° 54' 43". Highest water level.--2.76 ft below lsd, June 23, 1969. Description.--Dug water-table production well, Lowest water level .--Dry. diam 7.5 ft. Records available.--Chemical analysis: August 1963. Depth.--10 ft. Water levels: 1962-69. Aquifer.--Clay of Quaternary age. Remarks. --Mea surement discontinued, July 1969. CHEMICAL ANALYSIS Hd Temperature ( °C) I Footnote Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conductance (micromhos at 25°C) Milligrams per liter Date of llection co Discha rge (gpm ) - c - Vi Cl) Mang anese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) m;.4 Z - - E E 2. ,, ,,,, '8 :1•3+ (1) 0 Fluoride ( F ) Nitrate ( NO3 ) Orthophosphate ( PO4 ) Dissolved solids calculated 0 :: --,T. Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) 0u)- - a) 13 a)... 4.4(0 8 5 ..--d cn 0 ug. 20,1963 -- -- -- -- -- -- 125 -- -- -- 460 -- -- - 27 -- Date Oct. 2, 1962 Dec. 17 Jan. 18, 1963 Feb. 21 Mar. 23 Apr. 26 May 20 June 18 July 24 Aug. 20 Sept. 19 Oct. 22 Nov. 19 Dec. 16 Jan. 23, 1964 Mar. 2 Mar. 26 Apr. 22 Water level 5.72 6.50 6.94 7.43 8.39 7.39 5.44 6.08 7.05 6.87 4.33 5.61 6.91 7.48 8.44 9.10 9.60 9.63 Water levels, in feet below land surface Water Water Date Date level level May 26, 1964 10.32 Dec. 14, 1965 3.24 June 22 f Dec. 29 3.25 July 20 10.24 Jan. 27, 1966 3.93 Aug. 24 f Mar. 1 4.30 Sept. 23 f Mar. 30 5.69 Oct. 28 f Apr. 26 6.35 Nov. 23 f May 26 7.78 Dec. 14 f June 27 9.36 Jan. 12, 1965 f July 25 9.81 Feb. 8 f Aug. 29 f Mar. 8 f Sept. 26 10.48 Apr. 7 f Oct. 31 9.28 May 4 f Nov. 29 10.23 June 18 f Dec. 29 9.86 July 8 f Jan. 31, 1967 f Aug. 31 f Mar. 13 f Nov. 1 f Apr. 18 f Dec. 2 5.38 June 1 f Date July 6, 1967 Aug. 2 Sept. 1 Oct. 3 Nov. 1 Dec. 1 Jan. 4, 1968 June 3 Aug. 1 Dec. 4 Jan. 3, 1969 Feb. 5 Mar. 24 Apr. 23 June 23 July 23 Water level f f f f f f f f f 8.46 8.94 8.20 5.82 6.80 2.76 3.64 f - dry ____ 72 Well 35 (20-64.54-5-72) Owner. --U .S . Government-V.I. Government. Measuring point.--Top of 6-in casing, 0.7 ft above lsd. Name.--USGS - 9 (Sugar Estate). Land elevation.--48 ft above msl. Location.--Lat 18° 20' 17", long 64° 54' 53". Highest water levels.--10.83 ft below lsd, Jan. 17, 1966. Description.--Drilled water-table production well, Lowest water levels.--45.86 ft below lsd, Aug. 5, 1965. diam 6-in, cased 0-76. Records available.--Chemical analysis: December 1963. Depth.--90 ft. Water levels : 1963-67. Aquifer. --Volcanic rocks of Cretaceous age. Remarks. --Measurement discontinued, March 1967. CHEMICAL ANALYSIS Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conducta nce (micromhos at 25°C) Milligrams per liter - ... 6 Orthophospha te ( PO4 ) Dissolved solids calculated a E cr, - - Manganese ( Mn ) Calcium ( Ca Magnesium ( Mg ) - - Date of collection , Fluoride ( F ) C4­ Z - m0 TO Or 5 _ *--" 6, g co - , v) ,,,, z . P. - Ca rbonate ( CO3 ) 7, O'' Hd a) - E ZA " ...-• L..t3, fs) •--- ,... r0 .c0 oc4-4 -8 fa .5. ora -A0 .5 -. v.) - .6,4 .. Z . a. )ec. 20,1963 -- 26 0.00 -- 16 16 204 454 0 11 108 1.4 13 -- * 614 106 0 1,020 7.8 32 Residue on evaporation at 180°C. Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Dec. 30, 1963 Jan. 6, 1964 Jan. 15 Jan. 22 Feb. 3 38.67 38.95 39.23 39.46. 39.79 Aug. 31, 1964 Sept. 9 Sept. 14 Sept. 23 Sept. 29 42.24 42.40 42.49 42.60 42.58 Mar. 9, 1965 Mar. 15 Mar. 23 Mar. 30 Apr. 5 43.48 44.08 43.48 44.12 43.66 Jan. 3, 1966 Jan. 17 Jan. 27 Feb. 14 Mar. 1 11.98 10.83 11.73 16.54 20.73 Feb. 11 Feb. 17 Mar. 5 Mar. 9 Mar. 16 39.93 40.05 40.33 40.36 40.35 Oct. 13 Oct. 19 Oct. 28 Nov. 2 Nov. 9 42.46 42.44 42.54 42.55 42.54 Apr. 19 Apr. 26 May 3 May 10 May 18 44.13 43.91 44.01 43.85 43.55 Mar. 15 Mar. 30 Apr. 12 Apr. 26 May 10 24.41 27.05 29.00 30.87 32.33 Mar. 24 Apr. 7 Apr. 13 Apr. 20 May 5 May 11 May 26 June 1 June 8 June 15 40.52 40.67 40.74 40.82 40.94 41.00 41.23 41.32 41.45 41.58 Nov. 23 Nov. 30 Dec. 7 Dec. 14 Dec. 21 Dec. 28 Jan. 4, 1965 Jan. 11 Jan. 26 Feb. 8 42.52 42.43 42.41 42.47 42.56 42.68 42.74 42.80 42.82 43.04 May 24 June 3 June 14 June 21 June 29 July 7 July 21 Aug. 5 Sept. 30 Oct. 29 43.35 42.88 42.64 45.09 42.53 42.58 43.12 45.86 42.85 41.74 May 26 June 8 June 28 July 11 July 25 Aug. 5 Aug. 30 Sept. 26 Oct. 31 Nov. 29 33.62 34.62 36.75 37.10 38.00 38.65 39.45 41.16 35.42 35.90 July 6 July 13 July 20 41.99 42.07 42.05 Feb. 15 Feb. 23 Mar. 2 43.03 43.19 43.19 Nov. 12 Nov. 26 Dec. 14 36.16 30.00 24.28 Dec. 29 Jan. 31, 1967 Mar. 14 36.63 37.46 40.35 Temperature ( °C ) Footnote 73 Well 36 (20-64.54-9-42) Owner. --U .S. Government-V.I. Government. Measuring point.--Top of 6-in casing, 1.9 ft above lsd. Name.--USGS -18 (Estate Thomas). Land elevation.--83 ft above msl. Location.--Lat 18° 20' 31", long 64° 54' 49". Highest water level.--61.92 ft below lad, Dec. 14, 1965. Description.--Drilled unused water-table well, Lowest water level.--82 .67 ft below lad, June 1, 1967. diam 6-in, cased 0-56. Records available. --Chemical analyses: November and Depth.--144 ft. December 1964. Aquifer. --Volcanic rocks of Cretaceous age. Water levels: 1965-68. Remarks.--Measurement discontinued, January 1968. CHEMICAL ANALYSIS Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conducta nce (micromhos at 25°C) pH Temperature ( °C) Footnote Milligrams per liter Date of collection Discha rge (gpm ) SIroC ,-, 0 0 .0 o (7) .x_ .73 Ca rbona te ( CO3 ) Sulfate ( SO4 ) Chloride ( C1) F luoride ( F) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids ca lcula ted Ma nganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) O " - ,- L cu , cii- - o tu 2c .. : -. .. - &I 18 -- * 1,100 499 23 1,836 7.7 29 -- 1ov. 23,1964 ~ -- 28 0.00 -- 88 68 205 580 0 56 280 0.8 )ec. 15 -- -- -- -- 82 72 -- 748 0 -- 280 .3 30 -- -- 500 0 1,830 7.4 29 -- Residue on evaporation at 180°C. Water levels, in feet below land surface _., Water Water Water Water ' Date '''''cle' ."',. - Date Date level . 14 level level level ... Jan. 3, 1966 63.78 June 8, 1967 75.06 Mar. 13, 1967 81.10 Aug. 5, 1 965 81.81 64.42 June 28 77.09 Apr. 18 81.75 Aug. 7 81.63 Jan. 17 June 1 82.67 Aug. 21 80.94 Jan. 27 65.18 July 11 78.08 78.92 July 6 79.69 Aug. 31 80.48 Feb. 14 67.45 July 25 78.88 69.10 Aug. 5 79.54 Aug. 2 Sept. 30 79.57 Mar. 1 Aug. 30 79.52 Sept. 1 79.99 Oct. 29 78.30 Mar. 15 70.06 70.82 Sept. 26 81.18 Oct. 3 82.36 Nov. 12 76.27 Mar. 30 78.40 Nov. 1 80.78 Nov. 26 73.90 Apr. 12 71.80 Oct. 31 77.41 Dec. 7 78.88 73.24 Nov. 29 May 10 73.63 Dec. 29 77.59 Jan. 4, 1968 78.41 Dec. 8 73.67 Apr. 26 Dec. 14 61.92 74.5') Jan. 31 78.33 Dec. 23 66.65 May 26 - -- 74 Well 37 (20-64.54-10-42) Owner . --U .S. Government-V.I. Government. Measuring point.--Top of 6-in casing, 2.9 ft above lsd. Name.--USGS -19 (Estate Thomas). Land elevation.--88 ft above msl. Location.--Lat 18° 20' 34", long 64° 54' 51". Highest water level.--69.23 ft below lsd, Jan. 27 1966. Description.--Drilled unused water-table well, Lowest water level.--87 .19 ft below lsd, Oct. 3, 1967. diam 6-in, cased 0-58. Records available.--Chemical analyses: December 1964 Depth.--130 ft. and April 1967. Aquifer. --Volcanic rocks of Cretaceous age. Water levels: 1965-68. Remarks.--Measurement discontinued, January 1968. CHEMICAL ANALYSIS Milligrams per liter Date of collection Discha rge (gpm ) ii) O o L (7) Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conductance (micromhos at 25°C) pH Temperature (°C) I Footnote Manganese ( Mn ) Ca lcium ( Ca : Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bica rbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) ---. 0- a -o o 0 Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calculated >ec. 5, 1964 -- -- -- -- 38 A Residue on evaporation at 180°C. Date Water level Aug. 5, 1965 86.75 Aug. 7 86.55 Aug. 21 85.70 Aug. 31 85.34 Sept. 30 84.51 Oct. 29 83.67 Nov. 12 82.34 Nov. 26 80.55 Dec. 8 80.45 Dec. 14 76.65 Dec. 23 74.62 38 -- 820 0 -- 165 0.9 11 -- Water levels, in feet below land surface Date Water level Date Water level Jan. 3, 1966 70.95 June 8, 1966 79.39 Jan. 17 69.62 June 28 81.47 Jan. 27 69.23 July 11 82.15 Feb. 14 70.54 July 25 82.92 Mar. 1 72.04 Aug. 5 83.74 Mar. 15 73.24 Aug. 30 83.85 Mar. 30 74.10 Sept. 26 85.60 Apr. 12 Apr. 23 May 10 75.22 77.00 79.46 Oct. 31 Nov. 29 Dec. 29 82.98 81.68 82.00 May 26 78.56 Jan. 31, 1967 82.92 -- 252 0 1,400 Date Water level Apr. 18, 1967 June 1 July 6 Aug. 2 Sept. 1 86.28 86.70 83.6! 83.37 84.67 Oct. 3 Nov. 1 Dec. 7 Jan. 4, 1968 87.19 85.55 83.60 83.24 7.628 -- 75 Well 38 (20-64.54-8-32) Owner.--U.S. Government-V.I. Government. Measuring point.--Top of 6-in casing, 0.5 ft above lsd. Name.--USGS -17 (Estate Thomas). Land elevation.--90 ft above msl. Location.--Lat 18° 20' 37", long 64° 54' 52". Highest water level.--36.45 ft below lsd, Jan. 17, 1966. Description.--Drilled unused water-table well, Lowest water level.--45.44 ft below lsd, Sept. 30, 1965. diem 6-in, cased 0-29. Records available.--Chemical analysis: November 1964. Depth.--110 ft. Water levels: 1965-68. Aquifer. --Volcanic rocks of Cretaceous age. Remarks. --Measurement discontinued, January 1968. CHEMICAL ANALYSIS Milligrams per liter Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conducta nce (micromhos at25°C) Hd Temperature ( °C) `,Footnote I Date of collection Discha rge (gpm ) Silica ( S102 ) Ma nganese ( Mn ) Calcium ( Ca Magnesium ( Mg ) Sodium ( Na ) Potassium ( K a)... ro­ z0 0 -8 (..) 27x c.) ...._ CO Ca rbona te ( 003 ) Sulfate ( SO4 ) Chloride ( C1) Fluoride ( F) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calculated _ w - o 0 34 200 0.9 9.8 * 1,000 282 0 1,696 7.6 29 -- 4ov. 14, 1964 32 0.00 -- 42 43 281 688 Residue on evaporation at 180°C. Water levels, in feet below land surface Water Water Water Water Date Date level Date level Date level level 43.48 Aug. 5, 1 965 45.30 Jan. 3, 1966 37.00 June 8, 1966 40.93 Mar. 13, 1967 Aug. 7 45.30 Jan. 17 36.45 June 28 41.31 Apr. 18 43.70 Aug. 21 45.40 Jan. 27 36.56 July 11 41.59 June 1 43.87 Aug. 31 45.35 Feb. 14 37.24 July 25 41.79 July 6 44.05 44.18 Sept. 30 45.44 Mar. 1 37.80 Aug. 5 41.95 Aug. 2 Oct. 29 45.28 Mar. 15 38.35 Aug. 30 42.30 Sept. 1 44.33 Nov. 12 44.84 Mar. 30 38.85 Sept. 26 42.59 Oct. 3 44.52 Nov. 1 44.68 Nov. 26 44.10 Apr. 12 39.32 Oct. 31 42.77 Dec. 8 43.29 Apr. 26 39.82 Nov. 29 42.97 Dec. 7 44.87 Dec. 14 41.57 May 10 40.22 Dec. 29 43.16 Jan. 4, 1 968 45.04 43.30 Dec. 23 39.27 May 26 40.62 Jan. 31, 1967 76 Well 39 (20-64.55-39-29) Owner. --U .S . Government-V.I. Government. Measuring point.--Top of 6-in casing, 1.9 ft above lsd. Name.--USGS -7 (High School). Land elevation.--60 ft above msl. Location.--Lat 18° 20' 43", long 64° 55' 06". Highest water level.--12.42 ft below lsd, Jan. 3, 1966. Description.--Drilled water-table production well, Lowest water level.--25.64 ft below lsd, Aug. 21, 1965. diam 6-in, cased 0-53. Records available.--Chemical analysis: November 1963. Depth.--70 ft. Water levels: 1963-69. Aquifer. --Volcanic rocks of Cretaceous age. Remarks.--Measurement discontinued, July 1969. CHEMICAL ANALYSIS Milligrams per liter ,) Hardness E - - a ,,,,) -,4 -,) as CaCO3 o, csi 2 a 2 - ;74 .,.. ,--) 't 2. _ 0 - - ° - - 1;3' - 2.), 0 0 ,._. 0 .c I; ' a) rn - Z ffl, _ a - E +4a) 1.a4,) a)rn -/34 " ai - E E g rT '2 7-) - a) -c)a) - 0 ,..7 cl)' -5 E '-',„ a) ,... - - a) E .a - 00 a, _au > (.) . la 3 7) a c c . to - 0 .e0 2', ici t .., a Cl. --. •-• a) .... r° a 0 0 ..- oa 0 ........ a *...-.' ki. a 0 c c.) , .., , 0, .--I C ,,,, 8 ' (-) a m Z - c a 3 - o L: - .t..-; -c t ' 0 a a ,,1 cr) t A --' i, U co a a' cn 0 15 E 0 z 0 ­ 240 0.7 8.4 -- *990 292 0 1,710 8.429 -- iov. 24,1963 -- 35 0.00 -- 36 49 294 674 0 30 * Residue on evaoorat on at 186°C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Nov. 23, 1963 21.00 Sept. 29, 1964 23.24 July 9, 1965 24.37 Aug. 5, 1966 21.74 Dec. 2 21.58 Oct. 13 23.22 July 10 24.38 Aug. 30 21.68 Dec. 10 21.99 Oct. 19 23.35 July 12 24.40 Sept. 26 22.26 Dec. 16 22.24 Oct. 28 23.34 July 13 24.40 Oct. 31 22.27 Dec. 30 23.34 Nov. 2 23.36 July 15 24.50 Nov. 29 22.68 Jan. 6, 1964 23.36 Nov. 9 23.41 July 17 24.52 Dec. 29 22.89 Jan. 15 22.37 Nov. 23 23.48 July 19 24.47 Jan. 31, 1967 23.18 Jan. 22 22.40 Nov. 30 23.55 July 20 24.53 Mar. 7 23.40 Feb. 3 22.45 Dec. 7 23.62 July 22 24.48 Apr. 18 23.63 Feb. 11 22.48 Dec. 14 23.69 July 23 24.57 June 1 23.65 Feb. 17 22.49 Dec. 21 23.92 July 24 24.57 July 6 23.93 Feb. 24 22.55 Dec. 28 23.67 July 26 24.50 Aug. 2 24.07 Mar. 5 22.60 Jan. 4, 1965 23.87 Aug. 5 24.56 Sept. 1 24.18 Mar. 9 22.60 Jan. 11 23.89 Aug. 7 25.48 Oct. 3 24.37 Mar. 16 22.63 Jan. 26 23.94 Aug. 21 25.64 Nov. 1 24.42 Mar. 24 22.67 Feb. 8 24.09 Aug. 31 24.62 Dec. 7 24.63 Mar. 30 22.64 Feb. 15 24.10 Sept. 30 24.27 Jan. 4, 1968 24.76 Apr. 7 22.66 Feb. 23 24.15 Oct. 29 24.30 Feb. 6 24.90 Apr. 13 22.66 Mar. 1 24.05 Nov. 12 22.29 Mar. 5 24.88 Apr. 20 22.65 Mar. 9 24.23 Nov. 26 20.38 Apr. 3 24.90 May 5 22.74 Mar. 15 24.26 Dec. 8 19.67 May 3 25.03 May 11 22.78 Mar. 23 24.32 Dec. 14 1 3 . 7 9 June 3 25.15 May 18 22.80 Mar. 30 24.38 Dec. 23 1 3 . 2 7 July 8 25.27 May 26 22.83 Apr. 5 24.38 Jan. 3, 1966 12.42 Aug. 1 25.12 June 1 22.85 Apr. 26 24.32 Jan. 17 13.71 Sept. 3 24.88 June 8 22.86 May 3 24.34 Jan. 27 14.83 Oct. 1 25.20 June 15 22.90 May 7 24.29 Feb. 14 16.94 Nov. 5 25.45 June 22 22.94 May 10 24.21 Mar. 1 17.27 Dec. 4 25.23 June 29 23.00 May 18 24.01 Mar. 15 18.00 Jan. 3, 1969 25.19 July 6 22.96 May 24 24.01 Mar. 30 18.52 Feb. 5 24.58 July 13 22.99 June 2 24.12 Apr. 12 19.08 Mar. 24 22.81 July 20 22.98 June 7 24.15 Apr. 23 19.59 Apr. 23 23.50 Aug. 10 23.13 June 14, 24.25 May 10 19.96 May 23 22.52 Aug. 24 23.15 June 21 24.32 May 26 20.40 June 23 15.28 Aug. 31 23.14 June 29 24.35 June 8 20.73 July 23 17.75 Sept. 9 23.25 July 6 24.36 June 28 21.14 Sept. 14 23.31 July 7 24.37 July 11 21.44 Sept. 23 23.27 July 8 24.37 July 25 21.57 Specific conducta nce (micromhos at 25°C) 1 Temperature ( CC) Footnote Hd 77 Well 40 (20-64.55-42-50) Owner. --U .S. Government-V.I. Government. Measuring point.--Top of 6-in casing, 2.2 ft above lsd. Name.--USGS -21 (Grade School). Land elevation. --49 ft above msl. Location.--Lat 18' 20' 34", long 64' 55' 02". Highest water level.--34.54 ft below lsd, Jan. 17, 1966. Description. --Drilled unused water-table well, Lowest water level.--47.85 ft below lsd, July 24, 1965. diam 6-in, cased 0-70, 4-in slotted liner 68-88. Records available.--Chemical analyses: December'1964 Depth.--88 ft. and March 1967. Aquifer.--Volcanic rocks of Cretaceous age. Water levels : 1965-69. Remarks.--Measurement discontinued, June 1969. CHEMICAL ANALYSIS Milligrams per liter Date of llection co Discha rge (gpm ) - Cn. ro 0 - Mang a nese (Mn ) no 0 8 73' 0 Magnesium ( Mg ) Sodium ( Na Potassium ( K Bica rbonate ( HCO3 ) Ca rbona te ( 003 ) Sulfate ( SO4 ) Chloride ( C11 Fluoride ( F ) Nitra te ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calcula ted Hardness as CaCO3 Ca lcium, mag nesium Non- carbonate Specific conducta nce (micromhos at 25°C) Temperature ( °C) Footnote 544 0 12 835 0.7 6.7 -- * 1,940 682 236 3,460 7.7 29 -- 3cc. 12, 1964 34 0.00 -- 110 99 442 Mar. 31, 1967 28 .04 0.00 250 224 705 438 0 168 1,800 .5 5.7 -- * 3,900 1,545 1,186 6,070 7.6 -- -- Residue on evaporation at 180°C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level 41.31 Feb. 5, 1968 43.20 June 21 44.30 Aug. 31 June 14, 1965 43.90 Aug. 5, 1965 45.53 June 8, 1966 44.30 June 28 43.04 Mar. 5 44.00 June 29 44.10 Sept. 30 43.48 July 11 43.62 Apr. 3 43.93 Oct. 29 42.65 July 25 44.11 May 3 43.08 July 2 44.14 July 6 46.15 Nov. 12 41.24 Aug. 5 44.77 June 3 43.63 July 7 46.36 Nov. 26 39.88 Aug. 30 44.96 July 8 43.98 July 8 46.38 Dec. 8 41.70 Sept. 26 45.95 Aug. 1 43.04 July 9 46.73 Dec. 14 37.63 Oct. 31 44.54 Sept. 3 41.85 July 12 47.06 Dec. 23 36.79 Nov. 29 42.21 Oct. 1 41.92 July 13 47.25 Jan. 3, 1966 35.13 Dec. 29 44.83 Nov. 5 43.63 July 15 47.31 Jan. 17 34.54 Jan. 31, 1967 43.40 Dec. 4 41.81 July 19 47.49 Jan. 27 34.70 Apr. 18 46.04 Jan. 3, 1969 41.14 July 20 47.05 Feb. 14 35.65 June 1 46.22 Feb. 5 40.49 36.37 July 6 43.24 Mar. 24 39.12 July 22 47.76 Mar . 1 37.06 Aug. 1 43.03 Apr. 23 41.03 July 23 47.62 Mar. 15 47.85 Mar. 30 38.43 Sept. 1 44.12 May 26 38.84 July 24 46.50 June 23 35.72 July 28 46.62 Apr. 12 38.20 Oct. 3 July 30 47.28 Apr. 23 39.73 Nov. 1 45.30 Aug. 2 45.90 May 10 39.73 Dec. 7 43.21 Aug. 4 46.62 May 26 40.45 Jan. 4, 1968 45.30 -- 78 Well 41 (20-64.54-11-41) Owner. --U . S. Government-V.I. Government. Measuring point. - -Top of instrument platform, 2.2 ft above lsd. Name. --USGS -20 (Estate Thomas ). Land elevation. --55 ft above msl. Location .--Lat 18° 20' 31", long 64° 54' 56". Highest water level.--44.40 ft below lsd, Jan. 24, 1966. Description.--Drilled unused water-table well, Lowest water level . --59.05 ft below lsd, July 24, 1965. diam 6-in, cased 0-84, slotted 74-84. Records available.--Chemical analysis: December 1964. Depth.--118 ft. Water levels: 1965-69. Aquifer. --Volcanic rocks of Cretaceous age. Remarks. --Recorder. CHEMICAL ANALYSIS Milligrams per liter Specific conductance (micromhos at 25°C) Hd Temperature (°C) 1 Footnote 1 Date of collection Discha rge (gpm ) Silica ( S102 ) c Ma ng anese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ( Sulfate ( SO4 ) 1---0 0) Ts 8 .z0. Fluoride ( F ) ! Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calculated Hardness as CaCO3 Ca lcium, mag nesium 1 ci) 4., m c 0 0 z -a . 0 820 0 -- 150 0.7 12 -- -- 250 0 1 ,420 7.628 -- )ec. 8, 1964 -- -- 36 39 -- Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (in feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1965 5 -- 55.93 56.20 56.50 56.75 55.50 56.85 56.70 -- 54.60 -- 50.05 10 -- 55.87 56.56 56.75 56.25 55.25 57.95 56.70 55.35 54.55 52.30 50.05 15 -- 56.00 56.56 56.75 55.90 55.15 58.40 56.05 54.80 54.65 51.90 45.80 20 -- 56.10 56.50 56.95 55.85 55.40 57.90 56.05 -- 54.50 -- 46.58 25 -- 56.11 56.40 57.25 55.60 55.30 58.75 55.75 54.80 -- -- 46.02 eom 55.72 55.98 56.40 56.25 55.30 55.25 57.25 55.50 54.70 53.65 50.30 45.00 1966 S 44.84 44.92 46.98 48.42 50.32 51.46 54.08 55.59 -- 56.30 54.04 52.95 10 44.80 45.14 47.10 48.62 50.36 -- 54.26 54.92 56.26 56.20 53.30 52.81 15 44.58 45.72 47.40 48.74 50.50 -- -- 54.68 -- 55.18 53.16 52.90 20 44.42 45.90 47.58 49.10 51.42 -- 55.05 55.28 56.52 53.86 54.06 53.02 25 44.42 46.30 47.98 50.34 51.10 -- 54.70 54.95 56.79 54.19 -- 53.11 eom 44.66 46.70 48.32 50.58 51.04 53.94 55.25 56.11 56.53 53.91 52.98 53.14 1967 5 53.15 54.40 -- 57.08 -- 55.74 54.23 53.82 55.47 57.00 54.60 -- 10 53.15 54.60 56.08 56.30 -- 55.34 54.16 54.22 55.82 57.24 54.22 -- 15 53.58 55.10 56.42 57.10 55.69 -- 54.54 53.78 56.24 55.74 -- -- 20 53.45 55.60 56.10 56.88 56.42 -- -- 54.80 56.60 55.70 -- -- 25 53.85 55.56 56.82 57.02 56.74 -- -- 56.06 57.02 56.26 -- -- eom 53.69 56.32 56.22 57.28 56.40 54.40 -- 54.80 -- 55.24 -- -- 1968 5 53.16 53.70 54.68 53.97 53.41 54.20 -- 53.60 51.86 52.24 53.26 51.95 10 52.96 -- 54.69 53.78 53.38 -- -- 52.92 51.86 52.46 53.62 51.95 15 53.12 -- 54.69 53.23 53.60 -- -- 52.78 52.08 52.72 53.47 51.57 20 53.15 -- -- 53.32 53.79 -- -- 52.72 52.28 53.02 53.42 51.57 25 53.43 -- -- 54.53 53.92 -- -- 52.98 52.48 53.30 53.26 51.57 eom 53.59 -- -- 53.28 54.26 -- 54.18 52.20 52.28 53.24 52.95 51.57 1969 5 -- -- -- 49.69 51.30 45.75 45.78 47.54 47.96 48.65 -- -- 10 -- -- 49.09 50.25 51.34 45.70 -- 47.62 48.16 48.59 -- -- 15 -- -- 49.08 50.41 51.48 45.52 -- 47.36 48.18 49.03 -- -- 20 -- -- 49.36 50.72 51.34 45.64 -- 47.37 48.21 49.04 -- -- 25 -- -- 49.64 51.09 47.30 45.52 47.00 47.50 48.22 -- -- __ cern -- 51.30 49.70 51.02 45.78 45.70 47.04 47.96 48.56 -- -- -- 79 Well 42 (20-64.55-38-02) Owner.--U.S. Government-V.I. Government. Measuring point.--Top of 6-in casing, 0.3 ft above lsd. Name.--USGS - 6 (Lyton's Fancy). Land elevation.--320 ft above msl. Location.--Lat 18° 20' 59", long 64° 55' 51". Highest water level.--29.75 ft below lsd, Nov. 27, 1963. Description.--Drilled unused water-table well, Lowest water level.--59.65 ft below lsd, Dec, 10, 1963. diam 6-in, cased 0-21. Records available.--Chemical analyses: November 1963. Depth.--122 ft. Water levels: 1963-64. Aquifer.--Volcanic rocks of Cretaceous age. Remarks.--Well destroyed, December 1964. CHEMICAL ANALYSIS Milligrams per liter Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conductance (micromhos at 25°C) Xa Temperature ( °C) I Footnote Date of collection Discharge (gpm ) Silica ( S102 ) a c_, c0 Manganese ( Mn )] Calcium ( Ca) Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) Chloride ( C1) Fluoride ( F) r- Nitrate ( NO3 ) Orthophosphate ( PO4 ) Dissolved solids calculated lov. 11, 1963 -- -- -- -- -- -- -- -- -- -- 440 -- -- -- -- 280 -- -- -- 29 -- 19 -- 23 0.00 -- 48 45 464 726 0 90 432 1.2 17 -- * 1,440 305 0 2,490 8.0 29 -- .,. Residue on evaporation at 180°C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Nov. 27, 1963 29.75 Mar. 5, 1964 55.70 June 1, 1964 57.50 Sept. 14, 1964 58.10 Dec. 2 58.76 Mar. 9 55.67 June 8 57.75 Sept. 29 58.40 Dec. 10 59.65 Mar. 16 55.17 June 15 57.85 Oct. 13 58.59 Dec. 16 51.02 Mar. 24 55.70 June 22 58.53 Oct. 19 58.52 Dec. 30 55.03 Mar. 30 55.73 June 29 58.54 Oct. 27 58.67 Jan. 6, 1964 55.07 Apr. 7 55.90 July 6 58.19 Nov. 2 58.72 Jan. 15 55.06 Apr. 13 56.01 July 13 58.09 Nov. 9 58.81 Jan. 22 55.13 Apr. 20 56.16 July 20 58.13 Nov. 23 58.95 Feb. 3 55.45 May 5 56.61 Aug. 10 58.03 Dec. 1 58.97 Feb. 11 55.55 May 11 56.76 Aug. 24 57.91 Dec. 7 59.00 Feb. 17 55.60 May 18 57.08 Aug. 31 58.94 Dec. 14 58.99 Feb. 24 55.68 May 26 57.26 Sept. 10 58.07 - - 80 Well 43 (20-64.58-5-20) Owner. --U .S . Government-V.I. Government. Measuring point.--Top of 6-in casing, 1.3 ft above lsd. Name . --USGS -8 (Thatch Farm ). Land elevation.--80 ft above msl. Location.--Lat 18° 20' 49", long 64° 58' 05". Highest water level.--12.34 ft below lsd, Jan. 3, 1966. Description.--Drilled unused water-table well, Lowest water level.--29.54 ft below lsd, Mar. 30 and diem 6-in, cased 0-25. May 3, 1965. Depth.--80 ft. Records available.--Chemical analysis: December 1963. Aquifer.--Volcanic rocks of Cretaceous age. Water levels: 1963-69. Remarks. --Measurement discontinued, August 1969. CHEMICAL ANALYSIS a. Temperature ( °C) I Footnote Hardness as CaCO3 Ca lcium, mag ne sium Non- carbonate • Specific conducta nce (micromhos at 25°C) Milligrams per liter Date of collection Discharge (gpm ) Manganese ( Mn )] Calcium ( Ca 1 Magnesium ( Mg )i Sodium ( Na ) Pota ssium ( K) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Chloride ( Cl) Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids ca lcula ted -3r N 0 En .._. O•-• - °:), w _ cn ro o a )ec. 12,1963 -- 27 0.04 -- 44 43 495 892 0 79 385 0.2 8.0 -- * 1,460 287 0 2,520 7.9 28 -- . Residue on evaoorat on at lscon _ Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Oct. 16, 1963 Dec. 30 Jan. 6, 1964 Jan. 15 Jan. 22 24.96 26.75 26.80 26.86 26.94 Sept. 23, 1964 Sept. 29 Oct. 13 Oct. 19 Oct. 27 28.62 28.62 28.67 28.69 28.71 June 14, 1965 July 7 July 19 Aug. 5 Aug. 21 28.66 29.15 29.40 29.45 29.32 Jan. 3, 1967 Jan. 31 Mar. 13 Apr. 17 June 1 25.89 26.29 26.86 27.16 27.44 Feb. 3 Feb. 10 Mar. 2 Mar. 16 Mar. 24 27.08 27.15 27.32 27.44 27.53 Nov. 2 Nov. 9 Nov. 23 Nov. 30 Dec. 7 28.71 28.78 28.85 28.88 28.92 Aug. 31 Oct. 19 Nov. 12 Nov. 26 Dec. 8 29.20 27.99 25.30 21.50 21.19 July 6 Aug. 1 Sept. 1 Oct. 3 Nov. 1 27.75 27.73 27.92 28.07 27.95 Mar. 30 Apr. 7 Apr. 13 Apr. 20 May 5 27.55 27.62 27.68 27.75 27.80 Dec. 14 Dec. 21 Dec. 28 Jan. 4, 1965 Jan. 11 28.96 29.00 29.00 29.07 29.06 Dec. 14 Dec. 23 Jan. 3, 1966 Jan. 17 Jan. 27 18.24 16.80 12.34 13.56 15.15 Dec. 7 Jan. 4, 1968 Feb. 2 Mar. 5 Apr. 3 28.18 28.25 29.13 28.32 28.51 May 11 May 18 May 26 June 1 June 8 27.87 27.94 28.00 28.00 28.00 Jan. 26 Feb. 8 Feb. 15 Feb. 23 Mar. 1 29.19 29.29 29.32 29.36 29.40 Feb. 14 Mar. 15 Mar. 30 Apr. 12 Apr. 23 18.18 20.95 20.60 21.37 21.73 June 3 July 3 Aug. 1 Sept. 3 Oct. 1 28.50 29.40 27.12 26.68 28.13 June 15 June 22 June 29 July 6 July 13 28.06 28.13 28.20 28.24 28.28 Mar. 8 Mar. 15 Mar. 23 Mar. 30 Apr. 5 29.43 29.48 29.52 29.54 29.52 May 10 May 26 June 8 June 27 July 12 22.24 22.69 23.05 23.55 23.99 Nov. 4 Dec. 4 Jan. 3, 1969 Feb. 5 Mar. 24 24.68 21.37 24.95 23.32 23.12 July 24 Aug. 10 Aug. 24 Aug. 31 Sept. 9 28.24 28.37 28.43 28.47 28.62 May 3 May 10 May 18 May 24 June 2 29.54 29.44 28.75 28.60 28.54 July 25 Aug. 5 Aug. 29 Sept. 26 Oct. 31 24.28 24.53 25.02 24.86 24.57 Apr. 23 May 23 June 23 July 23 Aug. 22 25.24 20.59 13.26 19.09 16.22 Sept. 14 28.58 June 7 28.57 Nov. 29 25.20 81 Well 44 (20-64.58-4-49) Owner. --V . I. Government. Measuring point.--Top of curb, 0.0 ft above lsd. Name.--Golf Course Dug Well. Land elevation.--15 ft above msl. Location.--Lat 18" 20' 32", long 64° 58' 07". Highest water level.--1.19 ft below lsd, Dec. 14, 1965. Description.--Dug unused water-table well, Lowest water level.--9.31 ft below lsd, Apr. 7, 1965. diam 7 ft. Records available.--Chemical analyses: December 1962, Depth.--15 ft. February 1963, and July 1966. Aquifer. --Alluvium of Quaternary age. Water levels: 1962-68. Remarks.--Measurement discontinued, January 1968. CHEMICAL ANALYSIS Milligrams per liter Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conducta nce (micromhos at 25°C) Date of collection Discha rge (gpm ) - ro o cis Iron ( Fe ) Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na Pota ssium ( K ) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) :-.-0 a, -o 8 1a' U Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calculated Hd Temperature ( °C) Footnote 638 8 43 265 0.8 0.5 -- 1,120 121 0 1,810 8. 24 - )ec. 17,1962 -- 21 0.15 -- 22 16 385 .2 -- 1,160 98 0 1,870 8.2 28 -- 'OD. 21, 1963 -- 28 .04 -- 23 10 403 684 0 40 262 .9 3,490 8. -- -- uly 25, 1966 -- 18 .01 0.00 28 46 664 744 6 10 760 .7 .3 -- 1,980 259 0 .- .. - ue on evaporation at 180 C . Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Dec. 17, 1962 6.63 Mar. 26, 1964 7.71 June 18, 1965 8.21 Oct. 31, 1966 6.58 Dec. 31 6.88 Apr. 22 7.65 July 7 8.36 Nov. 29 6.98 Jan. 7, 1963 6.85 May 26 7.74 Aug. 5 9.01 Jan. 3, 1967 7.05 Jan. 14 6.92 June 22 8.04 Aug. 31 8.35 Jan. 31 7.12 Jan. 21 6.99 July 20 8.10 Nov. 1 6.29 Mar. 13 7.78 Jan. 28 7.08 Aug. 24 8.60 Dec. 2 3.13 Apr. 17 8.65 Feb. 4 7.02 Sept. 23 8.76 Dec. 14 1.19 June 1 8.67 Feb. 21 7.24 Oct. 27 8.65 Jan. 27, 1966 2.04 July 6 8.02 Apr. 22 6.53 Nov. 23 8.82 Mar. 30 2.89 Aug. 1 8.12 May 20 4.04 Dec. 14 8.90 Apr. 26 4.25 Sept. 1 8.30 June 18 7.01 Jan. 11, 1965 9.08 May 26 5.22 Oct. 3 8.50 July 24 7.16 Feb. 8 9.14 June 27 5.97 Nov. 1 8.35 Aug. 20 6.96 Mar. 8 9.23 July 25 8.85 Dec. 7 8.17 Jan. 22, 1964 8.18 Apr. 7 9.31 Aug. 29 6.68 Jan. 4, 1968 8.10 Mar. 3 7.91 May 8 9.07 Sept. 26 6.39 82 Well 45 (21-65.00-1-71) Owner. --P . Brown. Measuring point.--Top of instrument platform, 2.0 ft above lsd. Name . --Fortuna . Land elevation.--370 ft above msl. Location .--Lat 18° 21' 13", long 65° 00' 58". Highest water level.--54.80 ft below lsd, June 15, 1969. Description.--Drilled unused water-table well, Lowest water level.--92.85 ft below lsd, Aug. 26, 1965. diam 6-in, cased 0-20. Records available.--Water levels: 1963-69. Depth. - -220 ft. Remarks. --Recorder. Aquifer. --Volcanic rocks of Cretaceous age. Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph ( in feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1963 5 -- -- -- -- -- -- 89.12 86.65 83.60 84.50 86.55 87.75 10 -- -- -- -- -- 87.59 -- 85.50 80.85 -- 86.80 87.90 15 -- -- -- -- -- 88.07 88.76 87.06 82.08 -- 87.05 88.00 20 -- -- -- -- -- 88.34 89.09 87.32 82.89 -- 87.25 88.10 25 -- -- -- -- -- 88.71 89.35 87.46 83.48 -- 87.30 -- eom -- -- -- -- -- 87.79 89.56 87.02 84.08 86.30 87.55 88.45 1964 5 88.55 89.10 89.60 90.07 90.30 -- 90.90 91.10 91.15 91.50 91.60 91.75 10 88.65 89.20 89.65 90.15 90.40 -- 90.95 91.15 91.30 91.50 91.65 91.80 15 88.70 89.25 89.80 90.16 90.50 90.75 90.95 91.15 91.35 91.55 91.75 91.80 20 88.90 89.30 89.75 90.20 90.60 90.75 -- 91.20 91.35 91.50 91.75 91.95 25 88.95 89.50 89.95 90.25 -- 90.80 91.00 91.20 -- 91.60 91.80 92.00 eom 89.05 89.60 89.97 90.30 -- 90.85 91.10 91.20 91.50 91.60 91.70 92.00 1965 5 92.05 92.30 92.35 92.50 92.25 -- 92.70 92.75 92.75 -- -- 67.85 10 92.05 92.30 92.45 92.45 92.55 92.80 92.65 92.75 92.75 -- 62.40 71.05 15 92.10 92.35 92.40 92.40 92.50 92.70 92.70 92.80 92.70 90.60 -- 60.20 20 92.25 92.25 92.50 92.55 92.60 92.70 -- 92.75 92.65 90.55 -- 61.30 25 92.30 92.35 92.55 92.55 -- 92.65 -- 92.80 92.65 -- -- 63.25 eom 92.20 92.30 92.50 92.60 -- 92.60 92.75 92.80 92.60 -- -- 70.55 1966 5 71.80 -- 76.65 -- -- -- -- 82.10 -- -- 83.25 83.75 10 72.55 74.70 77.00 -- -- -- -- 82.15 -- -- -- 83.85 15 73.05 75.20 77.35 -- -- -- -- 82.20 82.75 -- -- 83.90 20 72.75 75.60 77.50 -- -- -- 81.75 82.45 82.80 -- -- 83.95 25 -- 76.00 e 77.75 -- -- -- 81.80 82.50 -- -- -- 84.10 eom -- 76.20 e78.10 -- -- -- 81.95 -- -- 83.20 83.75 -- 1967 5 -- 84.55 84.85 85.20 85.55 -- 86.10 86.15 86.40 86.40 86.75 86.95 10 84.40 -- 85.00 e85.25 85.55 -- 86.15 86.30 86.30 86.65 86.75 87.05 15 84.50 -- 84.95 -- 85.60 -- 86.20 86.30 86.40 86.65 86.85 87.10 20 84.55 -- 85.05 85.30 e 85.65 85.90 -- 86.35 86.45 86.65 86.85 87.25 25 84.55 84.80 85.10 85.40 85.70 -- -- 86.40 86.50 86.75 86.95 87.20 eom -- 84.85 85.10 85.45 -- 86.05 -- 86.40 86.50 86.65 87.00 87.25 1968 5 87.35 89.50 87.70 88.00 88.15 88.30 88.50 88.65 88.25 88.50 88.65 88.75 10 87.40 87.55 87.75 87.95 88.10 -- 88.55 -- 88.30 88.50 88.70 88.80 15 87.35 87.65 87.80 87.95 88.10 -- e88.60 -- 88.35 88.60 88.70 88.75 20 87.25 86.55 87.80 88.00 88.25 -- 88.60 -- 88.35 88.60 88.75 88.80 25 87.35 87.65 87.80 88.00 88.25 -- e 88.60 -- 88.40 88.70 78.70 88.80 eom 87.40 87.75 87.90 88.00 88.25 -- e 88.65 88.20 88.55 88.75 88.75 88.85 1969 5 88.85 89.00 85.05 86.85 87.35 57.95 -- -- -- -- -- -- 10 88.80 89.00 85.55 e 86.95 87.55 62.50 -- -- -- -- -- -- 15 88.80 88.95 86.00 e 87.05 87.60 54.80 -- -- -- -- -- -- 20 88.90 89.00 86.20 e 87.15 84.65 58.60 -- -- -- -- -- -- 25 88.90 89.05 86.45 87.20 55.25 61.85 -- -- -- -- -- -- eom 88.85 80.75 86.65 87.25 55.45 -- -- -- -- -- -- -- eEstimate. 1 1 1 ATLA NI! C OCEAN %•<--____7C7 c 18°20 EXPLANATION • 14 CA RIBBE A N SEA Drilled well 02 Dug well .3 Horizontal well -18°15' 0 ? 0 ? 2 2 3 3 4 kilometers 4 miles A2910 Stream station 64°50' 1 64°45' 1 64740' Figure 3 .--Locations of stations in St . John . r - -- 85 ST. JOHN, VIRGIN ISLANDS STREAMFLOW STATIONS 3910. Cinnamon Bay Spring near Cruz Bay, St. John, V.I. Location.--Lat 18° 21' 11", long 64° 45' 12". At Cinnamon Bay. 3.1 miles northeast of Government House at Cruz Bay. Drainage area .--0 .12 sq mi. Records available.--Discharge: Monthly measurements, September 1962 to January 1966. Chemical analyses: 1962-66. Remarks. --Sept. 15, 1962 - 1.3 gpm; Oct. 10, 1962 - 1.8 gpm; no flow Mar. 29 and July 18, 1963; 14 observations of no flow between Mar. 2, 1964 and Aug. 25, 1965; Nov. 12, 1965 - less than 0.1 gpm; no flow Jan. 18 and June 2, 1966. CHEMICAL ANALYSES Dissolved solids calculated Hardness as CaCO3 Calcium, magnesium Non- carbonate Specific conductance (micromhos a t 25°C) Hd Tempera ture ( CC) Color Milligrams per liter .°2 ro .c a. Silica ( S102 ) Iron ( Fe ) Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) Bicarbona te (HCO3 ) Carbona te ( CO3 ) Sulfate ( SO4 ) Chloride ( Cl) Date of collection 0cr ,..___ I.c, Fn 0 ..-1 `--- n -1r3' (1!'",-;- `ci — CO 2 'C7 - co -4---- _c--- 4. t 0 Oct. 25,1962 Feb.22,1963 Apr. 30 Sept. 20 Oct. 25 2.5 .9 -- 33 -- 0.00 -- -- 95 82 62 48 -- -- 299 618 658 -- -- 31 25 348 345 -- 0.5 0.0 .0 -- -- * -- 1,180 492 402 0 0 1,950 2,020 7.8 8.1 24 23 -- -- Nov. 22 Dec. 23 Jan. 23, 1964 Jan. 4, 1966 <.1 <.1 -- 22 -- .01 -- -- -- 76 -- 61 -- -- 194 -- 384 -- -- -- 8 410 342 -- 1.0 -- .2 -- -- , -- 1,050 544 440 -- 112 -- 1,680 -- 8.3 24 -- -- -- *Residue on evaporation at 180°C. • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 86 2950. Guinea Gut at Bethany, St. John, V.I. Location.--Lat 18° 19' 55", long 64° 46" 50", 1.0 mile east of Government House at Cruz Bay, 600 ft southeast of Bethany Church. Drainage area.--0.37 sq mi. Records available. --Discharge : January 1963 to October 1967. Chemical analyses : December 1962 to August 1967. Gage.--Water stage recorder, V-notch weir in concrete control. Altitude of gage is 230 ft above msl ( from topographic map). Extremes. --Discharge : Maximum and minimum (discharge in gallons per minute, gage height in feet). Annual maximum discharge for years 1963-66 Annual minimum discharge for years 1963-66 Date Time Discharge Gage height Year Date Discharge Gage height Aug. 27, 1963 -- 25,600 1.33 1963 Nov.29,Dec.8 0.7 0.05 July 1, 1964 1600 16 .18 1964 -- .0 .00 Nov. 4, 1965 -- 49,800 1.60 1965 -- .0 .00 Mar. 18, 1966 2330 1,540 .81 1966 -- .2 .03 1963-66 : Maximum discharge, 49,800 gpm Nov. 4, 1965 (gage height, 1.60 ft ) computed flow over dam; minimum daily, no flow for extended periods. Remarks . --Record s poor. • • Discharge in thousand gallons per day, calendar year 1963 Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 3.0 3.0 2.2 2.2 1.6 3.8 3.0 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 4.0 2.2 2.2 2.2 1 3.0 3.0 CONs. CO CO CO co CO CO CO CO CO P O P CP C., PPP PP OPPP PP P •••••••••••••••••••••••••••III M cocnM cnv.) co cc)cocoC3 CDCD C.1Mcncn coco coCD ff) M(11CD CDCICDIII COCO CO CO CO CO CO CO CO CO CO CO CO CO0 0 CO 00 CD0 0 0 C4 C1,1NCs/ CJNCNI CD CD CD CD COCDCDCDCD co coCD CD CDCDCDCDCOtn CDCD C4Cs.)NNNC•1 C4CVC4 co co co co cn co cD co co co co co co co C13 0 0 0 0 0 0 CO OD CO CO CO • • . . • • • • • • • • • • • • • • • • • • • • • CD CD 01 41. c) M CI Cf) COCO0101CI MCO C•1 Mt".") MC*, M M M CI COC.) 010') I O r, N N Nj N tsj N N N N t„, NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ • 2.2 3.0 2.2 2.2 1.1 2 3.0 3.0 3.0 3.0 2.2 2.2 1.1 3 3.0 3.0 2.2 3.0 2.2 2.2 1.1 4 3.0 3.0 2.2 3.0 2.2 2.2 1.1 5 3.0 2.2 2.2 3.0 2.2 2.2 1.1 6 3.0 2.2 2.2 4.8 2.2 1.6 1.1 7 3.0 2.2 2.2 3.8 2.2 1.6 1.1 8 3.0 2.2 3.0 3.0 2.2 1.6 .7 9 3.0 2.2 • 2.2 3.0 2.2 2.2 1.1 10 3.0 2.2 2.2 3.0 2.2 2.2 1.1 11 3.8 2.2 2.2 3.0 2.2 1.6 1.1 12 3.8 2.2 2.2 3.0 2.2 1.6 1.1 13 3.8 3.0 2.2 3.0 2.2 1.1 1.1 14 3.8 3.0 CO W C.0 W CA.)NJNJ N.J NJ NJ NJNO r r r r Es..) NJ NJ NJ NJ NJ NJ 01 01 01 01 2.2 3.0 2.2 1.1 1.1 15 3.8 3.0 2.2 3.0 2.2 1.1 1.1 16 3.8 3.8 2.2 3.0 2.2 1.1 1.1 17 3.8 4.8 2.2 3.0 2.2 1.1 1.1 18 3.8 3.0 2.2 3.0 2.2 1.1 1.1 19 3.0 2.2 2.2 3.0 2.2 1.1 1.1 20 3.0 2.2 2.2 3.0 2.2 1.1 1.1 21 3.0 1.6 2.2 2.2 2.2 1.1 1.1 22 3.0 2.2 2.2 2.2 2.2 1.1 1.1 23 3.0 3.0 2.2 2.2 1.6 1.1 1.1 24 3.0 2.2 2.2 2.2 1.6 1.1 25 3.0 4.8 2.2 2.2 1.6 1.1 26 2.2 3.0 2.2 3.8 2.2 1.1 1.1 27 2.2 2.2 1,320 3.0 1.6 1.1 1.1 28 2.2 29 2.2 3.0 3.0 3.0 3.8 2.2 2.2 2.2 3.8 2.2 1.6 1.1 1.1 119 2.2 1.6 1.1 1.1 60 2.2 1.6 .7 1.1 ICA, 3.0 3.0 2.2 3.0 -- 2.2 -- 1.1 Total 96.2 95.7 86.4 310.7 99.6 68.4 73.4 1,564.6 87.0 64.0 42.8 34.2 Mean 3.10 3.42 2.79 10.4 3.21 2.28 2.37 50.5 2.57 2.06 1.43 1.10 Max 3.8 6.7 4.8 103 4.8 3.0 4.0 1,320 4.8 2.2 2.2 1.6 Min 2.2 3.0 1.6 3.0 2.2 1.6 1.6 2.2 2.2 1.6 0.7 0.7 Calendar year: 1963 Total: 2,623 Mean: 7.19 Max: 1,320 Min: 0.7 1.1 1.6 30 31 -- 87 1 3 • Discharge in thousand gallons per day, calendar year 1964 Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1.1 2.2 0.7 1.1 3.0 0.7 2 .7 1.6 1.1 1.1 2.2 1.1 .4 1.6 1.6 1.1 2.2 1.1 4 1.6 1.6 1.1 1.6 1.6 1.1 5 1.1 1.6 1.6 1.6 1.1 1.1 6 1.1 1.6 2.2 2.2 1.1 .7 7 1.1 1.6 3.0 2.2 .7 .7 8 1.1 1.6 2.2 1.6 1.6 .7 9 .7 1.1 2.2 1.1 1.1 .7 10 .7 1.1 1.6 1.6 1.6 .7 11 .7 1.6 2.2 3.0 1.1 .7 12 1.1 1.6 1.6 1.6 1.6 1.1 13 1.1 1.6 1.6 1.6 1.6 1.6 14 1.6 1.1 1.6 1.1 1.6 .7 15 1.6 1.1 1.6 1.1 1.6 .4 16 1.6 1.1 2.2 1.1 1.1 .7 17 1.1 1.1 2.2 2.2 2.2 .7 18 1.1 1.1 2.2 1.6 1.6 1.6 19 1.1 1.1 1.6 1.6 1.1 1.1 20 1.1 1.1 1.6 3.0 .7 1.1 21 1.1 1.1 1.1 2.2 1.6 1.6 22 1.6 1.1 .7 3.0 1.1 3.0 23 2.2 .7 .7 3.0 1.1 2.2 24 2.2 1.1 .7 2.2 1.1 1.1 25 2.2 1.1 1.1 2.2 .7 1.1 26 1.6 2.2 .7 2.2 1.6 1.1 27 1.6 1.1 1.6 2.2 2.2 1.1 28 1.6 1.6 2.2 2.2 1.6 1.1 29 1.1 1.1 1.6 2.2 1.6 .7 30 1.6 -- 1.1 3.0 .7 1.1 EVNJ CO • • • • • • • • • • • • • • • • • 000 0 000 • • • • • • N.)NJts.) cr, cr, cr, cr, IN) NJ N r r r r r r cr) r VV C) Q1 cr, N.) N.) 1.1 0.7 0.4 0 1.6 .7 .4 0 3.0 .4 .4 0 3.8 .4 .7 0 3.8 .7 .4 0 3.0 .4 .4 0 2.2 .4 .7 0 2.2 .4 .4 .Q7 1.6 .4 .4 .01 1.1 .2 .4 .07 1.1 .2 .2 .2 1.1 .2 .2 .07 2.2 .2 .2 .01 1.1 .2 .2 .2 1.6 .2 .07 .07 1.6 .2 .07 .01 1.1 .2 .01 0 1.1 .4 0 0 .7 .4 0 0 .7 .4 .4 .07 .7 .4 .4 .2 .4 .2 .2 .07 .4 .2 .2 .01 .4 .7 .2 .4 .4 .4 • .4 .07 .2 .2 .07 .2 1.1 .4 .01 .07 1.6 .4 0 .07 1.1 .4 0 .01 1.1 .4 0 .07 31 1.1 -- 1.1 -- 1.1 -- 1.1 -- 0 Ns. r—I grCV CV CV0 V. V' CVCVCV C) C.4 • • . . • . • . • . . • • 0 0 0 0 0 0 0 C) O 0 0 0 0 0 0 0 0 Total 39.6 39.2 48.3 57.5 44.8 32.4 49.0 44.4 11.0 7.10 2.08 3.15 Mean 1.28 1.35 1.56 1.92 1.45 1.08 1.58 1.43 0.37 0.23 0.07 0.10 Max 2.2 2.2 3.0 3.0 3.0 3.0 3.0 3.8 0.7 0.7 0.4 0.4 0 Min 0.4 0.7 0.7 1.1 0.7 0.4 0.7 0.4 0.2 0 0 Calendar year : 1964 Total : 378.5 Mean: 1.0 Max: 3.8 Min: 0 5 10 15 20 25 30 -- 88 2.2 2.2 2.2 2.2 2.2 4 6 31 Discharge in thousand gallons per day, calendar year 1965 Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 2.2 1.1 1.6 1.1 2.2 —-_, co00 O NILOCD (.0(.0 (.0 CO (.0 COCO 1.0 (0 (.0 (0 (.0 (.0 Cs.1 0CO . . • • • • • . • • • • • • • • • • • • • • ,_,,,,—IC) C)N cococ‘.),---,.-. ,-,r—I r—I .—I.--Ir--1.--I.--1•-1,—I .--4 .—I ,-I0) CO C) CS) l..0 CO I Cs.) If) CD •-1 CO .—I I ,--I N. r-1 .-I 2.2 2.2 2.2 3.0 269 344 210 85 45 30 19 12 8.8 6.0 4.8 4.8 4.8 4.8 6.0 4.8 4.8 4.8 4.8 4.8 4.8 4.8 1 0 0 0 0 0 3.0 2 0 0 0 0 0 CV Ni t,i-,i•-,(..,-, 1.-, (-, Nits.) 1-, .--, ,., 1-. 1..-, 1.-. NiNi NiNiNi (....., (...) NiNiNico CO c....) (,..) CO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NiN NiC7) -'.'0)0, NiNicr) ,---, ,-, ,-, .-, cr) NiNiNiNiNic) c) NiNiNic) c) c, c) co . 2.2 3.0 0 3.0 2.2 1.1 3 0 0 0 0 1.6 .2 3.0 2.2 1.1 0 0 0 0 1.6 1.1 3.0 2.2 0 0 0 0 3.0 1.6 0 0 0 2.9 1.6 3.8 1.6 1.6 1.6 1.1 1.6 1.1 2.2 1.1 2.2 1.1 3.0 7 0 0 0 3.8 1.6 3.8 2.2 1.6 1.6 3.8 2.2 8 0 0 0 1.1 1,170 3.8 2.2 9 0 0 0 0 0 0 .7 68 3.0 2.2 11 0 0 0 .4 3.0 3.0 2.2 1.1 1.6 12 0 0 0 .2 .7 2.2 1.1 1.6 3.0 13 0 0 0 .07 .4 1.6 1.1 1.1 3.0 14 0 0 0 0 .07 3.8 1.1 3.0 1.1 0 0 0 0 .2 6.0 3.8 1.6 1.1 1.6 .7 1.6 1.1 1.6 1.6 1.6 .7 1.6 3.8 1.6 173 2.2 57 0 0 0 0 .2 6.0 3.0 16 0 0 0 0 .4 4.8 2.2 17 18 0 0 0 0 .2 3.8 2.2 0 0 0 0 .07 3.0 2.2 19 0 0 0 0 13 2.2 2.2 0 0 0 0 1.6 1.6 3.0 21 22 0 0 0 0 1.1 1.6 3.0 23 0 0 0 0 .7 1.6 3.0 24 0 0 0 0 1.1 1.6 3.0 0 0 0 0 826 1.6 3.8 26 0 0 0 0 419 2.2 3.8 1.6 3.0 2.2 1.6 1.6 1.6 1.1 1,1 1.6 1.1 1.6 1.1 1.6 .7 1.1 .7 .7 0 0 0 0 68 3.0 3.8 27 0 0 0 0 21 3.0 4.8 28 0 -- 0 0 7.3 2.2 3.8 29 0 -- 0 0 3.8 3.0 3.8 0 -- 0 -- 3.8 -- 3.8 Total Mean Max Min 0 0 0 0 0 0 0 0 0 0 0 0 10.77 .36 3.8 0 2,615.74 84.4 1,170 0 91.0 3.03 6.0 1.6 90.0 2.90 4.8 2.2 65.0 2.10 3.8 1.1 48.4 1.61 2.2 1.1 268.2 8.65 173 .7 2,087.5 1,108.2 69.6 35.7 1,750 344 1.1 2.2 Calendar year: 1965 Total: 6,384.8 Mean: 17.5 Max: 1,750 Min: 0 . 1966 Discha rge in t housand gallons p er day, ca lendar y ear (..) 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C.-) 0 0 SI 0 0 ••-.1 •--I ,-e ,-.4 ........ )....) r-.1 •-•,1 0 0 •-I o--..I •-• r--I •-• •-.1 r-I r.-.1 0 N. tf) N.1 .-4 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • C‘.1 • • . . >. ...-1 o •-I N.1 •-I •--I •--I .--1 •-•-1 r--.1 r-..) •--I •-I •••-4 r..1 r.--1 ••.-1 •--I •--I ••-•-4 •-...I •--I •--I •-•1 •--.1 .--1 •--.1 ••-..1 •--.1 •--I • ..-1 CO • cs) X ---I •••-) 4-1 C." •••-• CD b--. 2 N c,.) c., (.0 up ,0 (.0 (.0 (.0 (.0 (.0 ,0 Lc) (0 (C (.0 (.0 (0 up (0 ,.0 (.0 (.0 CD ,..0 (.0 (.0 (.0 (.0 (.0 co Lo ,... ,..0 a) . • . . • • • • . . . . . . . . . . . . . . . • • . . • . . , • (.0 • • C c, c, CV r--1 ••,-) •-.1 ...... •--.1 •-I •-.1 •--.1 •-I •,..-1 •--4 •-I •-• •--I •-I •-•I •-.1 •-..) •-I •-• •-I •-.1 I CY) • CSI ••-• cr •-•I r.--• •-I CV 0. 0 0 C V CS) CS) CV 0 C) CS) Cs1 CV C•4 Cs3 C V Cs.1 CV CS) 0 Cs) CV CV CV Cs.) CV CS) CS) CV CV CS) CV CO CV 0 0 • • . . . . . . . . . . . . • . . . . . • . . . . . . . . . . . . >I • N.1 • • •-I •-I •-I NI CV NI NI M M NI N4 NI N NI N.1 N.) Cs.) N1 c•-) N.1 N.1 N.1 N1 N.] NI NI NI NI N3 NI N.1 CO • C.) r-. ID C ra 2 CD c.,4 a) N Lo ,o ,c, 4..o (.0 cc, co (...0 CD c.c, co 4...o o cs.) c.3 c.c.,. Lc, CD c..) cy cs) N) ,.0 (.0 CD CD 4.0 v.) co up ca) o ,z, 1.. • • • • • • . • • • • • • • • • • • • . • • • • • • • • • • 1 • r-.. • • N.-•. •--4 •-.1 •--) ..--1 •--1 4-4 .....M NI N.3 •--, -, .--. NJ NJ N N.) ..-..1 e-4 •--.1 ••-.1 .-• •-I •--.1 I CO • C.) •••-4 < 0 •--I CO CO CO CO CO CO CO CO a) CO CO CO CO CO CO CO CO M CO M 0 CO CO 0 0 0 NJ NJ 0 M 0 NJ 1.4 • • • • a • • • • • • • • • • • • • • • • • • • • • • • • r..i M • (10 c., C') C., Tr ID' Tr ID' Tr Tr M M M C ., C.) in cn cn co c, N .,r rr N. LO ,r. M C') C', C", NI NJ 0 • N.1 2 N co •--• cr, (0 o o o o o o o OCOCOGOGOOOGOCOGOGOOOODG000 0000000 •,r. N. CO 0 XI • . • • • • • • • • • • • • • • • • • • • . • • • • • • 1 I I • CO • • a) co co co co co co co co co co co c•-) co co co co co co co co co co co co co co co co I I I Tr • cn cn G. CrY) M CO 00000ODCOCOCOCOCOCOCO CO 003COCOCOCOCOCOCOCO 0 0 0 CO CO 0 Cr. 00 N. 0 C• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • CO ,) • nO •,1. (13 V' .cr ,r. .7. 'I' cr C.-, co in cr N. •-4 CO 0 C•1 CO C') C') C., C., in in c•3 rn in in cn co) en N.1 • 01 ,--, M NI 00 L.r/ ••.-I Calendar y ear: 1966 Total: 778. 1 >, /7.1 rJ X c YU '''' C.) r3 --. •-I (S) CO V'0 0 (s. CO Cf) 0 •• NI M Tr If, co N co cn 0 ,--. NI M ,r• in Lo N CO C) 0 • cs., N N N NI NI N N N N M M 0 0 E-, 2 2 2 5 10 15 20 25 30 90 Discharge in thousand gallons per day, calendar year 1967 Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1 0.2 0.07 0.07 0.07 0 0 0 0 0 0 -- -- 2 .2 .07 .07 .2 0 0 0 0 0 0 -- -- 3 .2 .07 .07 .4 0 0 0 0 0 0 -- -- 4 .2 .01 .07 .4 0 0 0 0 0 0 -- -- .2 .01 .07 .2 0 0 0 0 0 0 -- -- 6 .2 .01 .07 .07 0 0 0 0 0 0 -- -- 7 .4 .01 .07 0 0 0 0 0 0 0 -- -- 8 .2 .01 .01 0 0 0 0 0 0 0 -- -- 9 .2 .01 .01 0 0 0 0 0 0 0 -- -- .2 .01 .01 0 0 0 0 0 0 0 -- -- 11 .2 .01 0 0 0 0 0 0 0 0 -- -- 12 .07 .01 0 0 0 0 0 0 0 0 -- -- 13 .07 .01 0 0 0 0 0 0 0 0 -- -- 14 .07 .01 0 0 0 0 0 0 0 0 -- -- .07 .2 0 0 0 0 0 0 0 0 -- -- 16 .2 1.4 0 0 0 0 0 0 0 0 -- -- 17 1.1 .7 0 0 0 0 0 0 0 0 -- -- 18 .7 .4 0 0 0 0 0 0 0 0 -- -- 19 .4 .2 0 0 0 0 0 0 0 0 -- -- .2 .2 0 0 0 0 0 0 0 0 -- -- 21 .2 .2 0 0 0 0 0 0 0 0 -- -- 22 .2 .2 0 0 0 0 0 0 0 0 -- -- 23 .4 .2 0 0 0 0 0 0 0 0 -- -- 24 .2 .2 0 0 0 0 0 0 0 0 -- -- .2 .07 0 0 0 0 0 0 0 0 -- -- 26 .07 .07 0 0 0 0 0 0 0 0 -- -- 27 .07 .07 0 0 0 0 0 0 0 -- -- -- 28 .07 .2 0 0 0 0 0 0 0 -- -- -- 29 .07 -- 0 0 0 0 0 0 0 -- -- -- .2 -- 0 0 0 0 0 0 0 -- -- -- 31 .07 -- .01 -- 0 -- 0 0 -- -- -- -- Total 7.03 4.63 0.53 1.34 0 0 0 0 0 -- -- -- Mean .23 .17 .02 .04 0 0 0 0 0 -- -- -- Max 1.1 1.4 .07 .4 0 0 0 0 0 -- -- -- Min .07 .01 0 0 0 0 0 0 0 -- -- -- Calendar year: 1967 91 CHEMICAL ANALYSES Milligrams per liter Hardness as CaCO3 Orthophospha te ( PO4) Dissolved solids ca lcula ted Ca lcium, magnesium Non- carbonate Specific conductance (micromhos at 25°C) Z Tempera ture ( CC) Color Sulfate ( SO4 ) Chloride 1 ( Cl) Date of collection Discha rge ( G PM) i - m •--I -•-I ,.., rn cn Iron ( Fe ) I Manganese it)( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bicarbonate ( HCO3 ) a) .--. !i.,L) e 2C t: Z 6 0 L. t.. c..) (0 `" 0 z --­ 2, - L.. Dec. 13, 1962 Feb. 22, 1963 May 1 May 24 June 17 -- 3.0 1.6 1.1 30 30 -- -- 0.00 .02 -- -- -- 50 78 -- -- 51 48 -- -- 332 325 610 736 0 0 38 39 358 0.3 14 335 .6 8.2 *1,260 340-- - - 374 392 406 476 380 0 0 -- -- -- 2,030 2,080 -- -- -- 8.0 8.1 -- -- -- 24 24 25 27 28 3 -- -- -- -- July 18 Aug. 22 Sept. 20 Oct. 25 Nov. 22 3.2 2.6 10.0 1.8 1.0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 190 294 350 350 - - - -- 400 460 476 152 408 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 28 28 27 26 26 -- -- -- -- -- Dec. 23 Jan.22,1964 Mar. 2 Mar. 25 Apr. 24 .8 1.5 .7 1.2 31 30 .00 .00 -- -- -- -- -- -- 76 82 -- - 76 74 -- -- 268 292 -- 718 684 0 0 - -- 6.0 6.7 350 422 476 345 362 - - -- .5 .5 -- 2.9 -- 1.1 -- -- -- 1,250 1,260 422 476 502 509 -- -- 0 0 -- -- 2,140 2,200 -- -- 7.9 7.8 25 26 24 27 -- -- -- -- May 25 July 1 July 20 Aug. 26 Sept. 21 .5 1.2 2.2 .3 .2 35 35 27 20 25 .00 .04 .00 .10 .00 -- -- -- -- -- 80 80 84 76 58 73 73 85 68 66 285 306 314 289 278 704 670 652 668 612 0 0 0 0 34 64 80 38 33 355 .7 388 .7 440 .4 360 .4 340 .6 3.9 *1220 .5 -- *1,300 1.8 -- 1,390 2.6 -- *1,250 3.0 - *1,170 500 500 559 469 416 0 0 24 0 0 2,150 2,240 2,380 2,050 1,990 7.9 7.9 7.9 8.1 8.1 27 28 29 28 28 -- -- -- -- 40 * Oct. 26 May 17,1965 June 18 July 20 Aug. 25 .1 .7 .9 34 34 32 31 27 .00 .00 .00 .00 .00 -- -- -- -- -- 70 100 104 90 76 68 69 78 72 72 286 287 313 295 277 664 636 760 728 680 0 0 0 0 36 92 42 26 10 348 .6 380 .6 420 .6 380 .6 368 .6 3.8 -- 1,180 1.9 - *1,280 .4 -- *1,380' .7 -- 1,260 .1 -- 1,231 454 533 580 520 468 0 11 0 0 0 2,060 2,180 2,390 2,220 2,100 7.8 7.8 8.1 8.2 8.1 29 24 28 29 26 30 25 -- 3 10 Oct. 5 Oct. 26 .5 1.4 26 31 .00 .00 -- -- 70 76 69 68 286 268 662 612 0 0 20 10 365 .5 380 .5 .4 -- 1,181 1.7 -- 1,161 458 469 0 0 2,090 2,110 8.2 7.9 27 27 7 5 Nov. 24 1.2 32 .00 -- 86 71 266 626 0 54 362 .6 4.6 -- 1,161 506 0 2,040 8.0 -- -- Dec. 9 Jan. 4,1966 2.4 9.2 32 31 .00 -- .02 0.00 94 42 72 77 303 306 704 532 0 0 60 20 385 .6 406 .5 6.2 -- 3.9 -- 1,291 1,201 530 422 0 0 2,240 2,140 8.0 8.2 25 -- -- S Jan. 19 Feb. 1 4.3 -- 30 29 .00 .00 -- -- 74 62 77 79 287 334 636 644 0 0 66 70 376 .5 424 .5 5.0 -- 6.5 -- 1,241 1,311 501 480 0 0 2,160 2,300 8.0 7.8 23 -- 0 0 Mar. 2 Apr. 1 May 3 2.2 2.2 1.4 30 30 30 .00 .01 .02 .00 .00 .00 32 58 70 83 77 71 294 294 291 540 606 644 0 0 0 56 48 44 392 .5 388 .8 3692.3 7.0 -- 7.0 -- .1 -- 1,161 1,221 1,201 421 461 466 0 0 0 2,070 2,120 2,100 8.2 8.1 8.1 27 28 27 5 5 0 June 3 July 6 Aug. 4 Sept. 6 Oct. 3 .5 1.1 .9 .6 1.2 30 27 28 25 27 .00 .00 .00 .00 .00 -- .00 .00 .00 .00 78 86 84 78 84 71 66 60 71 74 281 302 286 316 314 656 666 654 676 650 10 0 0 0 0 43 56 35 88 66 350 .5 380 .5 356 .6 372 .6 420 .5 3.6 -- 1.4 -- 3.0 -- 2.3 -- 2.3 -- 1,254 1,261 1,241 1,241 1,326 486 486 456 486 514 0 0 1) 0 0 2,130 2,190 2,050 2,130 2,310 8.5 8.2 8.1 8.1 7.8 27 27 28 28 27 15 20 15 20 30 Nov. 3 -- 26 .00 .00 84 68 302 692 0 44 375 .5 2.0 -- 1,261 489 0 2,220 8.0 25 20 Dec. 1 .2 27 .02 .00 72 66 286 648 1) 40 351 .5 4.3 -- 1,18( 451 1 2,020 8.0 26 15 *Residue on evaporation at 180"C. --- - - 92 GROUND-WATER STATIONS Well 1 (20-64.46-3-15) Owner.--U. S. Government. Measuring point.--Top of 6-in casing 5.90 ft above lsd. Name.--NPS-7 (Hawksnest). Land elevation. --40 ft above msl. Location.--Lat 18° 20' 53" , long 64° 46' 36". Highest water level.--14.94 ft below lsd, Dec. 28, 1967. Description. --Drilled unused water-table well, diam 6-in, Lowest water level.--18.02 ft below lsd, June 28, 1967. cased 0-28. Records available.--Chemical analysis: August 1964. Depth.--36 ft. Water levels: 1964-69. Aquifer. --Volcanic rocks of Cretaceous age. CHEMICAL ANALYSES Milligrams per liter Dissolved solids calculated Hardness as CaCO3 Calcium, magnesium Non- ca rbonate Specific conduc tance (micromhos a t 25°C) Hd 2 m Ma nga nese ( Mn ) Calcium ( Ca ) Magnesium (Mg ) Sodium ( Na ) Pota ssium ( K) Bicarbona te ( HCO3 ) Carbonate ( CO3 ) Sulfa te ( SO4 ) Chloride ( C1) Fluoride ( F) Nitrate ( NO3 ) •c a ,,, Date of collection Silica ( S102 ) 2 L,.: o ,r 9 , 0-.~ ...... -3 Aug. 8, 1964 38 0.05 -- 106 577 628 360 0 276 2,425 0.0 0.4 -- * 5,640 2,637 2,342 7,440 7.5 27 * Residue on evaporation at 180°C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level !noel level level Aug. 25, 1964 Aug. 31 Sept. 9 Sept. 18 Sept. 21 17.10 17.0' 16.81 16.77 16.70 May 7, 1965 May 17 June 2 June 17 lune 30 17.27 17.34 17.38 17.30 17.06 May 16,1966 June 3 July 6 July 21 Aug. 4 17.25 17.85 17.75 17.44 17.62 l'eb. 27, 1968 Mar. 29 Apr. 25 May 31 July 1 16.46 15.65 16.39 17.06 16.80 Sept. 26 Oct. 5 16.90 16.84 July 22 Aug. 4 17.17 17.87 Sept. 6 Oct. 7 17.52 17.78 July 30 Aug. 30 16.27 15.95 Oct. 12 16.99 Aug. 25 17.90 Nov. 4 17.45 Sept. 30 15.62 Oct. 19 16.89 Sept. 10 17.55 Dec. 1 17.60 Oct. 30 16.48 Oct. 23 16.96 Oct. 5 17.55 Dec. 27 17.84 Nov. 27 16.62 Nov. 6 17.08 Oct. 26 17.38 Jan. 26, 1967 17.86 Dec. 30 16.65 Nov. 19 16.83 Nov. 17 17.23 Feb. 27 17.74 Jan. 30, 1969 16.72 Nov. 30 17.03 Nov. 26 17.13 Mar. 28 17.63 Mar. 5 16.43 Dec. 17 16.96 Dec. 22 17.00 May 1 17.13 Apr. 2 16.74 Dec. 28 17.04 Jan. 4, 1966 16.89 May 26 17.90 May 2 16.77 Jan. 12, 1965 17.05 Jan. 18 16.88 June 28 18.02 Jun. 3 15.18 Jan. 25 17.43 Feb. 1 16.74 July 27 17.77 July 7 15.22 Peb. 14 17.30 Feb. 23 17.02 Aug. 30 17.51 Aug. 15 16.25 Feb. 24 17.34 Mar. 8 17.10 Oct. 3 16.60 Sept. 21 15.80 Mar. 10 17.40 Mar. 22 17.06 Oct. 26 17.61 Oct. 21 15.34 Mar. 22 17.58 Apr. 1 17.62 Nov. 29 15.28 Nov. 19 15.81 Apr. 6 17.23 Apr. 19 17.24 Dec. 28 14.94 Dec. 17 15.82 Apr. 21 17.41 May 3 17.45 Jan. 26, 1968 15.79 Temperature ( °C) -- -- -- __ 93 Owner.--U.S. Government. Name.--NPS-16 , (Trunk Bay Dug Well). Location.--Lat 18° 21' 15" , long 64° 46' 05". Description.--Dug water-table production well, diam 6.5 ft. Depth.--7 ft. Aquifer.--Alluvium of Quaternary age. Well 2 (21-64.46-1-79) Measuring point.--Top of well, 2.60 ft above lsd. Land elevation.--6 ft above msl. Highest water level.--1.10 ft below lsd, Mar. 5, 1969. Lowest water level.--6.70 ft below lsd, July 30, 1968. Records available.--Chemical analyses: May 1965 to December 1969. Water levels.--1963-69. CHEMICAL ANALYSES liter ( C1) Fluoride ( F) li..--­ cop .4z 2:- Orthophospha te ( PO4) Dissolved solids calculated Hardness as CaCO3 Calcium, magnesium Non- carbonate Specific conduc tance (micromhos at 25°C) Temperature ( °C) Milligrams per E Date of collection ,-J.y. 0 ._. ..... _. . t... , Manga nese ( Mn ) Calcium ( Ca ) ...).,.., Carbonate ( 003) Sulfa te ( SO4 ) Chloride Potassium ( K) (7.; ^ g - .,,,,, .cg3 .... ,,,, ... z . o- co ' May 17, 1965 -- -- -- -- -- -- -- -- -- -- 5,760 -- -- -- 304 -- -- -- -- Mar. 12, 1968 21 0.00 -- 560 1,180 9,160 320 338 0 2,50516,950 0.9 -- 0.0 30,860 6,249 5,972 39,480 7.9 -- Mar. 29 22 .00 0.00 490 1,215 9,610 350 310 0 2,64517,400 .9 -- .4 31,900 6,220 5,960 40,400 7.9 26 Apr. 26 22 .00 .04 448 1,163 9,600 420 328 0 2,22017,750 1.6 -- .2 31,800 5,900 5,631 42,500 7.7 26 May 31 21 .00 .00 500 1,465 8,820 375 318 0 2,52017,400 .9 -- .4 31,200 7,272 7,011 42,200 8.0 27 July 1 24 .28 540 1,120 9,680 298 322 0 2,49017,500 .8 - .4 31,800 5,950 5,690 43,700 8.0 -- July 30 22 .00 550 1,170 9,560 320 328 0 2,35017,300 .9 -- .3 31,400 6,180 5,910 43,300 8.0 -- Aug. 30 -- -- -- -- Sept. 30 -- -- -- -- -- -- -- -- -- 13,600 - - - -- -- Oct. 30 -- -- -- -- -- -- -- -- -- 20,200 - -- -- -- -- Dec. 1 -- -- -- -- -- -- -- 16,200 - -- -- -- -- Dec. 30 -- -- -- -- -- -- -- 12,400 - -- -- -- Jan. 30, 1969 -- -- -- -- -- 15,600 -- -- -- -- Mar. 7 -- -- -- -- -- -- -- 3,050 - -- -- -- Apr. 2 -- -- -- -- -- -- -- -- -- 8,000 - -- -- -- May 2 __ __ __ __ -- -- 15,800 - -- -- -- June 3 -- -- -- -- -- -- 2,660 - -- -- -- July 7 -- -- -- -- -- 10,000 - -- -- -- Aug. 8 -- -- -- -- -- 7,700 - -- -- -- Dec. 17 -- -- -- -- -- 5,900 - -- -- -- Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Sept. 20, 1963 3.64 June 17, 1965 6.04 Jan. 26, 1967 5.60 July 1, 1968 5.87 Oct. 25 5.13 July 22 5.86 Feb. 27 5.49 July 30 6.70 Nov. 22 5.33 Aug. 25 6.06 Mar. 28 5.11 Aug. 30 5.52 Dec. 23 5.45 Oct. 5 4.83 May 1 4.83 Sept. 30 5.19 Jan. 22, 1964 4.89 Nov. 17 4.24 May 26 6.15 Oct. 30 5.39 Mar. 2 5.33 Dec. 8 4.87 June 28 6.30 Nov. 27 4.67 Mar. 25 4.82 Jan. 4, 1966 4.85 July 27 5.92 Dec. 30 4.31 Apr 24 5.43 l'eb. 1 4.40 Aug. 30 6.18 Jan. 30, 1969 4.69 May 25 5.80 Mar. 2 5.45 Oct. 3 5.60 Mar. 5 1.10 July 20 5.35 Apr. 1 5.83 Oct. 26 5.43 Apr. 2 4.68 Aug. 25 5.60 May 2 6.16 Nov. 29 6.09 May 2 6.63 Oct. 26 5.27 June 3 6.26 Dec. 28 5.68 June 3 3.21 Nov. 19 4.84 July 6 5.78 Jan. 26, 1968 5.73 July 7 5.13 Dec. 17 4.82 Aug. 4 5.70 Feb. 27 5.35 Aug. 16 4.92 Jan. 25, 1965 5.41 Sept. 6 4.80 Mar. 12 4.70 Sept. 24 4.08 Feb. 24 5.06 Oct. 3 5.75 Mar. 29 5.72 Oct. 21 4.79 Mar. 22 5.66 Nov. 4 5.11 Apr. 26 4.87 Nov. 19 5.21 Apr. 21 4.98 Dec. 1 4.62 May 31 6.28 Dec. 17 4.44 May 17 5.35 Dec. 27 5.03 94 Owner . --U.S . Government. Name.--NPS-14 (Trunk Bay). Location.--Lat 18° 21' 08" , long 64° 46' 04". Description. --Drilled horizontal production well, cased 0-420. Length of bore.--803 ft. Aquifer.--Volcanic rocks of Cretaceous age. Well 3 (21-64.46-5-90) Measuring point.--Pressure gage at mouth of bore. Land elevation. --50 ft above msl. Highest pressure.--35 psi , Dec. 17, 1969. Lowest pressure.--0 psi. Records available.--Chemical analyses: 1966-69. Water pressure: 1966-69. Remarks.--Used to recharge NPS-5. CHEMICAL ANALYSES Dissolved solids calculated Hardness as CaCO3 Calcium, magnesium Non- carbonate Specific conduc tance (microm hos at 25°C) Ma nga nese ( Mn ) Calcium ( Ca ) Magnesium (Mg) Sodium Milligrams per liter Hd Temperature ( CC) ro ( Na ) Potassium ( K) Bicarbonate ( HCO3 ) Carbonate ( CO3 ) .a.)- 4, .-. 0 M cn - Chloride ( Cl) Fluoride ( F) Date of collection Silica ( S102 ) .-.- .c a - .SI- mig 0 '''' ..co g -03 ,... c,-• ......O 04a, Z- 2 - t0 Apr. 29, 1966 June 3 July 18 Oct. 19 Oct. 27 30 34 35 -- 0.00 -- .000.04 .02 .04 -- -- -- -- 125 106 98 -- -- 148 76 64 -- -- 169 265 204 -- -- 496 574 554 -- -- 0 0 0 -- 181 66 40 -- -- 490 435 322 310 310 0.4 0.5 .4 .0 .3 .1 * -- 1,900 920 -- *1,320 577 -- *1,080 508 - -- 488 - 484 513 106 54 -- -- 2,870 2,210 1,860 -- -- 7.9 7.9 7.6 -- -- 27 27 -- -- Dec. 27 Jan. 26, 1967 Feb. 27 May 26 June 28 -- -- -- -- 1.7 -- -- .02 -- -- .00 -- -- 12 -- -- 34 -- -- -- -- 178 -- -- 174 - U -- 320 -- 300 -- 290 -- 290 4.0 290 .5 -- .0 400 480 - 424 -- 208 *610 170 -- -- -- -- 27 -- -- -- -- 1,200 -- 7.7 -- -- -- -- July 27 Aug. 30 Oct. 3 Nov. 29 Jan. 2, 1968 1.1 1.0 .6 32 32 .01 .07 .00 .00 .00 .00 .00 .00 .00 .04 12 6 4 78 92 58 46 39 76 66 181 169 173 185 208 288 212 176 560 614 8 6 0 0 0 5.6 288 3.2 272 5.2 290 26 298 30 295 .3 .3 .4 .6 .6 .2 .1 .0 .0 .0 *702 268 * 642 204 *603 170 * 956 505 * 989 500 19 20 26 46 0 1,350 1,260 1,210 1,710 1,770 8.3 8.4 7.9 8.1 7.7 26 -- -- 26 26 Jan. 26 Feb. 27 Mar. 29 Apr. 26 May 31 37 28 21 30 23 .00 .00 .00 .00 .00 .04 .00 .01 .01 .00 92 88 12 88 82 68 64 56 61 67 198 203 198 202 202 3.3 3.4 3.2 3.2 3.2 520 534 272 542 286 16 8 18 0 20 35 32 11 35 16 330 320 305 302 310 .7 .7 .5 .7 .4 .1 0.0 1,040 510 .2 .0 1,010 485 .0 .0 759 260 .1 .0 989 470 .0 .0 791 296 57 34 8 26 32 1,760 1,750 1,430 1,750 1,470 8.4 8.3 8.6 8.2 8.6 27 26 26 27 28 July 1 July 30 Aug. 30 Sept. 30 Oct. 30 18 11 ---- -- .00 .00 - - 57 49 - - 52 44 - - 203 196 -- -- 3.2 3.4 -- -- 238 20 332 10 -- -- 3.8 320 2.8 320 -- 300 -- 270 .4 .5 .0 .5 .0 .0 743 228 800 303 -- -- -- -- -- -- 0 14 -- -- -- 1,400 1,520 -- -- -- 8.7 8.4 -- -- -- -- -- -- -- Dec. 10 Dec. 30 Jan. 30, 1969 Mar. 7 Apr. 2 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 300 280 290 290 290 -- -- -- -- -- -- -- -- -- -- -- ---- -- -- -- -- -- -- -- -- -- May 2 June 3 July 7 Aug. 15 Dec. 17 ---- -- -- -- -- -- -- -- -- -- -- -- -- ---- -- -- -- -- -- -- -- -- -- -- -- -- 300 330 310 310 318 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- *Residue on evaporation at 180`C. 95 Water pressure, pounds per square inch Water Water ' .\ ater Water Date Date Date Date pressure pressure pressure pressure 19 Aug. 4 29 May 26 30 Feb. 27 14 Jan. 30, 1969 n Sept. 6 29 June 28 30 Mar. 29 16 Mar. 3 20 Oct. 3 30 July 27 30.5 Apr. 26 14 Apr. 2 n Dec. 1 28 Aug. 30 30.0 May 31 17 May 2 30 July 21, 1966 24.5 May 1, 1967 30 Jan. 26, 1968 12 Dec. 30, 1 968 Dec. 14 n Oct. 3 30.0 July 1 19 June 3 34 Dec. 27 29.5 Oct. 24 n July 30 20 July 7 30 Jan. 26, 1967 n Oct. 26 n Aug. 30 24 Aug. 15 34 Feb. 3 n Nov. 29 18 Sept. 30 18 Sept. 24 33.5 Feb. 27 26 Dec. 28 n Oct. 30 1 Dec. 17 35 Mar. 28 29 Jan. 2, 1968 14 Nov. 27 20 - - n - flowing, value pressure 0 psi 96 Owner.--U.S . Government. Name.--NPS-5 (Trunk Bay). Location.--Lat 18° 21' 09" , long 64° 46' 03". Description. --Drilled water-table, production well, diam 6-in, cased 0-12. Depth.--60 ft. Aquifer.--Volcanic rocks of Cretaceous age. Well 4 (21-64.46-4-90) Measuring point.--Top of 6-in casing, 1.0 ft above lsd. Land elevation.--60 ft above msl. Highest water level.--16.76 ft below lsd, June 3, 1969. Lowest water level.--57.29 ft below lsd, Nov. 27, 1968. Records available.--Chemical analyses: 1964-69. Water levels: 1964-69. CHEMICAL ANALYSES liter ( C1) Milligrams per Orthophospha te ( P041 Dissolved solids calculated Hardness as CaCO3 Calcium, magnesium Non- carbonate Specific conductance (micromhos at 25°C) Hd v Temperature ( °C) Date of collection 3 ''' ^ ....0 o a' Ma nganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bicarbona te ( HCO3 ) Carbonate ( CO3 ) Sulfate ( SO4 ) Chloride a.) -9-. --, 0.-- "" '' -, S -t: July 17, 1964 July 21, 1966 Sept. 6 Oct. 7 Nov. 8 38 37 -- -- -- 0.05 .02 -- -- -- -- -- -- -- -- 80 204 -- -- -- 61 122 -- -- -- 188 240 -- -- -- 482 542 -- -- -- 0 0 -- -- -- 39 91 -- -- -- 300 705 760 570 520 0.0 0.0 .3 .1 -- -- -- -- -- -- -- -- -- -- -- * 988 450 *2,110 1,010 -- 864 -- 780 -- 680 55 566 -- -- -- 1,670 3,050 -- -- -- 7.9 7.4 -- -- -- 26 26 -- -- -- Dec. 1 Dec. 27 Jan. 26, 1967 Feb. 27 Mar. 28 __ -- -- __ -- __ -- -- __ -- __ -- -- __ -- __ -- -- __ -- __ -- -- __ -- -- -- __ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 550 540 340 540 540 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 772 764 504 752 640 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- May 1 May 26 June 28 July 27 Aug. 30 36 -- 35 35 34 .04 -- .01 .02 .03 .02 -- .04 .01 .04 168 -- 164 160 158 99 -- 100 95 99 214 -- 217 226 208 552 -- 556 550 552 0 -- 0 0 0 108 -- 99 96 98 515 510 520 518 495 .3 -- .4 .3 .3 .1 -- .0 .2 .1 -- -- -- -- -- * 1,650 -- *1,640 *1,540 *1,560 826 484 820 790 801 373 -- 364 339 348 2,550 -- 2,320 2,490 2,490 7.4 -- 7.4 7.9 7.4 -- -- 27 -- Oct. 3 Oct. 26 Nov. 29 Dec. 28 Jan. 26, 1968 35 -- 34 35 34 .00 -- .00 .00 .00 .00 -- .00 .00 .02 116 -- 94 112 92 95 -- 72 80 63 228 -- 189 188 206 3.6 432 612 612 508 0 0 0 20 98 21 48 35 510 295 330 320 .4 .5 .6 .7 .1 -- .4 -- .0 -- .6 1.0 *1,550 * 981 *1,090 1,020 680 530 610 490 326 28 108 40 2,370 -- 1,800 1,880 1,770 8.0 -- 8.0 7.9 8.5 -- -- 26 -- 27 Feb. 27 Mar. 29 Apr. 26 May 31 July 1 32 36 35 28 34 .00 .00 .00 .00 -- .02 .01 .02 .04 .02 134 28 96 33 27 79 74 67 79 71 230 223 205 200 224 4.2 4.0 3.8 3.7 3.5 548 190 552 444 272 12 -- -- 4 8 70 74 37 35 61 440 440 340 305 385 .6 .6 1.0 .4 .3 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 1,270 984 1,060 907 948 660 374 515 408 360 191 199 62 37 124 2,160 1,820 1,850 1,850 1,760 8.3 8.5 8.0 8.3 8.3 26 27 27 27 -- July 30 Aug. 30 Sept. 30 Oct. 30 Nov. 27 38 -- .01 17 80 239 3.8 172 10 87 460 .2 .0 .0 1,020 372 215 1,910 -- -- -- -- 8.5 -- -- -- -- 28 -- -- -- -- Dec. 30 Jan. 30, 1969 Apr. 2 May 2 June 3 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 280 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- *Residue on evaporation at 180°C. 97 Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Aug. 25, 1964 Aug. 31 Sept. 9 Sept. 18 Sept. 21 32.58 32.57 32.61 32.78 32.77 June 2, 1965 June 17 June 30 July 22, Aug. 4 30.50 30.68 31.14 33.50 34.35 July 6, 1966 July 21 Aug. 4 Sept. 6 Oct. 7 49.09 42.29 40.00 47.38 45.47 Jan. 26, 1968 Feb. 27 Mar. 12 Mar. 29 Apr. 26 48.27 47.55 43.25 55.81 48.09 Sept. 26 Oct. 5 Oct. 12 32.63 32.59 32.64 Aug. 25 Sept. 10 Oct. 5 39.71 a 49.03 47.26 Oct. 17 Oct. 19 Nov. 4 40.54 37.53 36.69 May 31 July 1 July 30 43.).8 43.49 43.45 Oct. 19 32.79 Oct. 26 41.80 Dec. 1 45.95 Aug. 30 47.09 Oct. 23 32.83 Nov. 17 35.19 Dec. 27 a 49.10 Sept. 30 47.74 Nov. 6 33.05 Nov. 26 34.14 Jan. 26, 2967 42.47 Oct. 30 53.77 Nov. 19 33.19 Dec. 22 a 35.45 Feb. 27 47.09 Nov. 27 57.29 Nov. 30 33.33 Jan. 4, 1966 a 43.43 Mar. 28 a 49.17 Dec. 30 33.08 Dec. 17 Dec. 28 33.54 33.66 Jan. 18 Feb. 1 44.30 45.35 May 1 May 26 a 48.96 46.37 Jan. 30, 1969 Mar. 5 28.55 27.52 Jan. 12, 1965 Jan. 25 Feb. 14 Feb. 24 Mar. 10 33.82 33.95 34.14 34.25 34.37 Feb. 23 Mar. 8 Mar. 22 Apr. 1 Apr. 19 47.63 46.95 47.84 47.54 47.24 June 28 July 27 Aug. 30 Oct. 3 Oct. 23 46.03 46.13 46.07 46.25 46.27 Apr. 2 May 2 June 3 July 7 Aug. 15 24.49 31.46 16.76 16.78 20.77 Mar. 22 Apr. 6 Apr. 21 May 7 May 11 34.50 34.60 34.68 34.42 33.55 May 3 May 16 June 1 June 3 June 21 42.14 44.50 a 48.60 a 47.54 a 49.10 Oct. 26 Nov. 29 Dec. 28 Jan. 2, 1968 43.44 41.52 50.22 47.46 Sept. 24 Oct. 21 Nov. 19 Dec. 17 22.31 23.40 25.46 20.53 a-pumping. - --- 98 Owner . --U . S. Government. Name . --NPS-12 (Cinnamon Bay Gallery Well). Location.--Lat 18° 21' 17", long 64° 45' 23". Description.--Dug unused water-table gallery, 14 ft by 20 ft. Depth. --14 ft. Aquifer.--Alluvium of Quaternary age. Well 5 (21-64.45-11-77) Measuring point.--Top of concrete standpipe, 1.5 ft above lsd. Land elevation.--10 ft above msl. Highest water level.--2.37 ft below lsd, Mar.5,1969. Lowest water level .--7.83 ft below lsd, July 1, 1968. Records available --Chemical analyses: July 1963 to October 1964. Water levels: 1964-69. CHEMICAL ANALYSES Milligrams per liter Dissolved solids calculated Hardness as CaCO3 Calcium, magnesium Non- ca rbonate Specific conduc tance (micromhos at 25°C) Hd Temperature 1 ( °C) Y Date of collection Silica (Si02 ) ,; c-:-. 2 : Manga nese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bicarbonate ( HCO3 ) Carbonate ( CO3 ) Sulfate ( SO4 ) Chloride ( C1) Fluoride ( F) o. `°O ) - .c o Tro z- 2 - t0 July 23, 1963 Oct. 5, 1964 Oct. 6 Oct. 8 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 180 4,900 3,650 2,720 - - - - -- -- -- 350 -- -- 1,750 -- -- -- -- 26 -- 28 28 Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Mar. 25, 1964 Apr. 24 Aug. 25 Sept. 18 Oct. 7 6.86 7.02 7.33 6.82 7.36 June 17, 1965 June 30 July 22 Aug. 4 Aug. 25 7.00 7.10 7.32 7.27 7.31 June 3, 1966 July 6 Aug. 4 Sept. 6 Oct. 3 7.17 7.52 6.97 4.50 6.60 Feb. 27, 1968 Mar. 29 Apr. 25 May 31 July 1 6.84 6.74 6.83 7.29 7.83 Oct. 23 Nov. 6 Nov. 19 Nov. 30 Dec. 11 6.94 6.91 6.90 6.97 6.82 Oct. 5 Oct. 26 Nov. 17 Nov. 26 Dec. 9 6.50 4.46 4.63 5.50 6.22 Nov. 1 Dec. 1 Dec. 27 Jan. 26, 1967 Feb. 27 6.55 6.38 6.31 7.07 6.96 July 30 Aug. 30 Sept. 30 Oct. 30 Nov. 27 7.22 7.09 6.86 7.03 7.46 Dec. 29 Jan. 12, 1965 Jan. 25 Feb. 14 Feb. 24 6.68 6.56 6.98 7.16 6.92 Dec. 22 Jan. 4,1966 Jan. 18 Feb. 1 Feb. 23 3.95 5.48 5.90 5.85 6.55 Mar. 28 May 1 May 26 June 28 July 27 6.92 6.96 7.20 7.27 7.34 Dec. 30 Jan. 30, 1969 Mar. 5 Apr. 2 May 2 6.10 6.24 2.37 6.17 6.83 Mar. 10 Mar. 22 Apr. 6 Apr. 21 May 7 6.94 7.07 7.15 6.81 6.93 Mar. 2 Mar. 22 Apr. 1 Apr. 19 May 3 6.63 6.41 6.82 6.62 6.77 Aug. 30 Oct. 3 Oct. 26 Nov. 29 Dec. 28 7.27 6.50 6.60 6.45 6.57 June 3 Sept. 24 Oct. 21 Nov. 19 Dec. 17 3.39 3.10 5.20 5.94 5.56 May 17 6.49 May 16 6.90 Jan. 26, 1968 6.92 99 Well 6(21-64.45-1-67) Owner .--U.S. Government. Measuring point.--Top of instrument platform, 3.40 ft above lsd. Name . --NPS -15 ( Cinnamon Bay Dug Well) . Land elevation.--7 ft above msl. Location. --Lat 18° 21' 18", long 64° 45' 20". Highest water level. --2.23 ft below lsd, May 9-10, 1965. Description.--Dug unused water-table well, diam 6.5 ft. Lowest water level.--6.55 ft below lsd, June 26, 1968. Depth. --9 ft. Records available.--Water levels: 1963-69. Aquifer.--Alluvium at Quaternary age. Remarks . --Recorder. Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph ( in feet' Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1963 5 -- -- 5.79 5.43 5.33 5.92 6.08 5.62 -- 5.04 4.82 __ 10 -- -- 5.97 4.55 5.51 6.04 5.87 5.62 -- 5.15 4.86 -- 15 -- -- 5.95 4.85 5.56 6.04 5.82 5.68 -- 4.96 4.85 -- 20 -- -- 5.89 4.95 5.48 5.99 5.97 5.84 -- 5.21 4.92 5.57 25 -- 5.78 5.63 -- 5.78 6.05 5.93 5.79 5.15 -- 5.02 __ eom -- 5.86 5.53 -- 5.86 6.02 6.04 4.09 5.05 4.92 5.12 -- 1964 5 5.53 -- -- 5.72 6.13 6.40 -- 5.93 5.61 -- -- -- 10 5.63 -- -- 5.92 5.84 6.38 -- 6.07 5.53 -- -- -- 15 5.43 -- 5.52 5.97 6.13 6.35 -- 6.16 5.67 -- -- -- 20 5.23 -- 5.57 5.94 6.27 6.23 5.67 6.25 5.48 -- 5.87 -- 25 -- -- 5.71 5.95 6.32 6.10 5.84 -- -- -- -- -- eom -- -- 5.59 6.02 6.20 6.17 5.84 5.46 -- -- -- 5.84 1965 5 10 15 20 25 eom 5.74 5.57 5.80 5.95 6.05 6.14 6.11 6.17 6.12 5.99 5.88 5.99 5.93 5.88 -- -- 6.15 -- -- 5.86 5.64 -- 6.06 6.11 5.53 2.23 3.74 5.27 3.51 5.35 5.72 5.81 5.83 5.98 6.07 6.06 6.11 6.11 6.29 6.35 6.37 6.25 5.53 6.24 6.39 6.40 5.62 4.30 5.88 5.42 5.90 -- -- -- 5.56 5.56 5.80 4.84 4.20 4.85 2.95 -- 4.20 4.61 4.37 4.89 5.09 3.34 3.44 3.69 4.02 4.42 1966 5 4.71 4.87 5.54 5.71 5.60 6.13 6.26 5.56 5.67 5.66 5.49 -- 10 5.07 4.88 5.55 5.89 5.53 6.21 6.33 5.65 4.63 5.69 5.28 -- 15 4.57 5.17 5.50 3.85 5.65 6.16 5.96 5.98 5.35 4.97 5.28 -- 20 4.98 5.38 5.36 5.43 5.36 6.09 5.67 6.05 5.38 4.92 5.30 -- 25 5.06 5.43 5.33 5.56 5.69 6.12 5.52 6.10 5.65 5.49 5.36 -- eom 4.81 5.48 5.60 5.66 5.90 6.29 5.12 5.61 4.97 5.46 5.24 -- 1967 5 5.51 5.83 5.65 5.68 5.33 6.06 6.37 5.93 6.02 5.42 4.55 10 5.55 6.02 5.96 5.91 5.59 6.12 6.35 6.01 5.85 5.64 5.17 -- 15 5.71 6.07 6.07 5.89 5.83 6.14 6.04 6.05 5.43 5.47 4.53 20 5.79 5.66 5.80 5.95 5.94 6.14 6.09 6.14 5.32 5.44 4.85 -- 25 5.85 5.86 5.75 5.84 6.09 6.19 6.18 6.15 5.52 5.52 5.32 - eom 5.92 5.60 5.62 -- 6.06 6.33 5.83 6.13 5.54 4.81 5.40 -- 1968 5 5.68 5.61 5.22 5.97 5.93 6.33 6.35 6.07 5.84 5.97 6.01 4.09 10 5.68 5.63 -- -- 6.06 6.42 6.46 5.61 -- 5.70 5.99 4.91 15 5.57 5.62 -- -- 5.96 6.39 6.30 5.96 -- 5.69 5.82 4.82 20 5.58 5.57 5.46 -- 6.05 6.45 6.24 6.10 -- 5.81 5.77 5.10 25 5.74 5.59 -- -- 6.13 6.53 6.14 6.13 -- 5.84 5.76 5.25 eom 5.70 5.24 5.79 5.78 6.32 6.51 6.16 6.15 5.75 6.04 4.37 5.13 1969 5 -- -- h 2.99 5.24 -- -- -- -- 4.70 3.99 4.15 2.79 10 -- -- -- 5.51 -- -- -- -- 4.84 3.83 4.12 3.19 15 __ __ -- -- __ -- -- -- 4.81 4.01 4.18 3.75 20 __ __ -- -- __ __ __ 4.80 3.93 4.16 4.43 4.11 25 __ __ -- -- -- -- -- 4.75 3.47 4.37 2.37 4.08 eom __ __ __ __ -- __ -- 4.72 3.59 4.18 2.37 4.04 h - tape measurement 100 Well 7 (21-64.45-10-78) Owner.--U.S. Government. Measuring point.--Top of 2-in well point, 1.9 ft above lsd. Name.--NPS-11 (Cinnamon Bay). Land elevation.--27 ft above msl. Location.--Lat 18° 21' 17" , long 64° 45' 17". Highest water level.--23.80 ft below lsd, Dec. 22, 1965. Description.--Dug unused water-table well, diam 5 ft, Lowest water level.--26.57 ft below lsd, June 28, 1967. back-filled around 2-in diam well point. Records available.--Water levels: 1964-67. Depth.--27 ft. Remarks. --Mea surement discontinued, December 1967. Aquifer.--Alluvium of Quaternary age. Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Sept. 18, 1964 25.56 May 7, 1965 26.23 Feb. 1, 1966 24.30 Dec. 1, 1966 25.55 Jet. 23 26.03 May 17 26.05 Feb. 23 25.65 Dec. 27 25.47 Nov. 6 26.06 June 17 26.27 Mar. 2 25.95 Jan. 26, 1967 26.24 Nov. 19 26.15 June 30 25.97 Mar. 22 25.85 Feb. 27 26.08 Nov. 30 26.16 July 22 26.53 Apr. 1 26.08 Mar. 29 26.48 Dec. 17 26.10 Aug. 4 26.47 Apr. 18 26.15 May 1 25.80 Dec. 29 25.39 Aug. 25 26.43 May 3 26.33 May 26 26.38 ran. 12, 1965 25.89 Oct. 5 25.75 May 16 26.03 June 28 26.57 ran. 25 26.00 Oct 26 24.99 June 3 26.35 July 27 26.41 Feb. 14 26.30 Nov. 16 24.37 July 6 26.49 Aug. 30 26.35 Feb. 24 26.14 Nov. 26 25.10 Aug. 4 26.13 Oct. 3 25.66 Aar. 10 26.14 Dec. 8 25.34 Sept. 6 26.26 Oct. 26 26.04 Vlar. 22 26.30 Dec. 22 23.80 Oct. 3 25.82 Nov. 29 25.66 Apr. 6 26.24 Jan. 4, 1966 24.90 Nov. 4 26.18 Dec. 28 25.75 Apr. 21 26.18 Jan. 18 25.26 Well 8 (21-64.45-14-78) Owner.--U .S. Government. Measuring point.--Top of 6-in casing, 1.2 ft above lsd. Name.--NPS-9 (Cinnamon Bay). Land elevation.--50 ft above msl. Location.--Lat 18° 21' 14" , long 64° 45' 17". Highest water level.--36.19 ft below lsd, Dec. 17, 1969. Description.--Drilled water-table, production well, Lowest water level.--56.49 ft below lsd, Aug. 15, 1969. diem 6-in, cased 0-39. Records available.--Chemical analyses: 1964-69. Depth.--60 ft. Water levels : 1964-69. Aquifer.--Volcanic rock of Cretaceous age. 101 CHEMICAL ANALYSES 20 o C a - a ro a - C.) E Milligrams per liter a) .Co pC w0 16 cox C/) 0- U v co 4, (4, Igt 44, .bZ Co a. O .0 0 .a t. 0 Hardness as CaCO3 E ro a a • E z co en O 2 a. c.) aL E. Oct. 6, 1964 Nov. 17 Nov. 18 Nov. 20 Nov. 23 36 0.00 -- 58 71 183 484 10 30 275 280 270 280 270 0.5 0.0 -- 964 436 23 -- 392 -- __ 1,610 8.4 27 29 26 26 26 Nov. 24 Nov. 25 Nov. 27 Feb. 17, 196S Mar. 22 280 280 270 300 300 420 -- 328 -- 27 27 29 29 Mar. 29 May 7 June 17 July 21, 1966 Oct. 7 35 38 .00 -- 72 .00 0.00 82 66 50 246 260 512 562 18 0 70 38 300 348 328 335 350 * -- 1,050 1,100 320 312 451 410 480 0 1,800 1,900 8.- 4 7.7 28 26 Nov. 8 Dec. 27 Jan. 26, 1967 Feb. 27 May 1 3-5 .02 -- 76 71 236 562 0 50 320 340 340 350 340 .4 1.0 1,060 448 448 456 480 482 21 1,920 7.- 6 -- May 26 June 28 July 27 Aug. 30 Nov. 29 3-4 35 36 37 .-03 .00 .02 .00 -- -- 80 68 .00 74 67 .01 76 72 .00 67 86 __ -- -- 350 -- 233 568 0 37 340 .6 235 566 0 18 338 .5 216 566 0 36 320 .4 217 614 0 14 335 .6 1,080 1,080 1,080 1,060 302 -- 479 13 460 0 486 22 520 17 -- -- 1,840 7.7 -- 1,900 8.0 26 1,910 7.7 -- 1,890 8.2 26 Dec. 28 Jan. 26, 1968 Feb. 27 Mar. 29 Apr. 26 38 38 44 38 38 .00 .00 .00 .00 .00 84 95 200 630 0 35 340 .6 .01 80 71 250 4.2 532 20 45 360 .7 .01 76 71 234 4.0 554 10 38 350 1.3 .00 19 62 252 3.9 328 30 37 360 .5 80 62 260 4.1 576 0 32 360 .8 .5 -- .0 -- .0 0.0 1,090 600 1,130 490 1,120 485 964 302 1,120 455 83 20 9 0 0 1,940 7.8 -- 1,920 8.4 27 1,920 8.3 26 1,700 8.6 26 1,960 7.6 26 May 31 July 1 July 30 Aug. 30 Sept. 30 38 39 37 .00 .00 .00 .00 37 22 26 83 60 64 220 245 243 3.5 3.8 3.6 490 0 336 24 402 8 40 340 41 352 39 340 340 380 .5 .2 .5 .8 .4 .0 .0 1,000 434 .1 954 302 .0 959 328 32 0 0 1,850 1,710 1,750 8.2 27 8.7 8.4 Oct. 30 Nov. 27 Dec. 30 Jan. 30, 1969 Mar. 7 320 320 330 310 250 Apr. 2 May 2 June 3 July 7 Aug. 15 330 340 340 365 360 Nov. 19 Dec. 17 -- 358 -- -- 348 -- 2,050 2,000 * Residue on evaporation at 180°C. 102 Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Nov. 6, 1964 42.52 Sept. 10, 1965 46.95 Sept. 6, 1966 a 50.75 Mar. 29, 1968 46.87 Nov. 19 43.49 Oct. 5 45.78 Oct. 7 47.50 Apr. 26 46.72 Nov. 30 43.32 Oct. 26 44.86 Nov. 4 47.45 May 31 47.09 Dec. 17 44.82 Nov. 12 43.14 Dec. 1 46.67 July 1 48.10 Dec. 28 44.84 Nov. 26 43.27 Dec. 27 a 51.05 July 30 47.55 Jan. 12, 1965 44.81 Dec. 8 43.27 Jan. 26, 1967 45.45 Aug. 30 48.30 Jan. 25 44.46 Dec. 22 42.14 Feb. 27 47.67 Sept. 30 47.23 Feb. 14 44.25 Jan. 4, 1966 42.24 Mar. 29 46.54 Oct. 30 47.50 Feb. 24 44.15 Jan. 18 43.44 May 1 a 52.30 Nov. 27 46.49 Mar. 10 44.09 Feb. 1 a 48.29 May 26 47.10 Dec. 30 46.13 Mar. 22 44.68 Feb. 23 44.19 June 28 47.65 Jan. 30, 1969 45.77 Apr. 6 46.39 Mar. 2 44.61 July 27 47.78 Mar. 5 44.71 Apr. 20 46.88 Mar. 22 44.07 Aug. 30 47.58 Apr. 2 46.34 May 7 May 17 48.70 45.78 Apr. 1 Apr. 19 a 52.05 a 52.52 Oct. 3 Oct. 26 46.93 46.38 May 2 June 3 46.40 41.82 June 2 46.38 May 3 47.50 Nov. 29 46.24 Aug. 15 56.49 June 17 June 30 46.52 46.10 May 16 June 3 46.85 a 52.77 Dec. 28 Jan. 2, 1968 46.30 46.07 Sept. 24 Oct. 21 a 41.41 a 40.82 July 22 46.13 June 21 46.35 Jan. 26 46.73 Nov. 19 a 47.44 Aug. 4 46.53 July 7 46.42 Feb. 27 46.42 Dec. 17 36.19 Aug. 25 47.27 Aug. 4 a 47.42 a - pumping 103 Well 9 (21-64.45-12-72) Owner.--U.S. Government. Name.--NPS-6 (Cinnamon Bay). Measuring point.--Top of 6-in casing, 1.6 ft above lsd. Land elevation.--60 ft above msl. Location.--Lat 18° 21' 16", long 64° 45' 10". Description.--Drilled water-table production well, diem 6-in, cased 0-51. Depth.--70 ft. Highest water level.--41.72 ft below lsd, Aug. 15, 1969. Lowest water level.--63.15 ft below lsd, July 1, 1968. Records available.--Chemical analyses: August 1964 to June 1969. Aquifer.--Volcanic rocks of Cretaceous age. Water levels : 1964-69. CHEMICAL ANALYSES Temperature i ( CC) Milligrams per liter Dissolved solids] calculated Hardness as CaCO3 Calcium, mag nesium Non- carbonate Specific conductance (micromhos at 25°C) a)4-.(t) 0 a) cn Date of collection Silica ( SiO2 ) Magnesium (Mg ) Sodium ( Na ) Potassium ( K) 22 7,, a a 0,- ,z3 1:3 In -' ---- b• 5. `n.i- C O B 0. a) -- CZ C C . -2 ,- mi 0 * -- c.) Sulfate ( SO4 ) c') ---- X -^4"--- ,n O'r +64. .5 0 0 2 " ,, - ri X a o o -Q 0 .. ----' Qa, 0 ..._... .z. ,_ ...., z .._... C --- , M --- .. -2) (..) 0 ,-- --1co C.) r. (_.) ,,. Aug. 2, 1964 34 0.00 -- 46 81 :24 390 -- 47 400 0.3 0.4 -- *1,060 448 128 1,900 8.2 27 Aug. 30,1968 Sept. 30 Oct. 30 -- ---- -- -- -- -- -- -- -- ---- ---- -- -- -- -- ---- -- ---- -- ---- -- 1,140 1,600 1,200 -- ---- -- ---- -- ---- -- ---- -- -- -- -- --- -- -- __ -- -- -- ---- -- Nov. 27 -- -- -- -- -- -- -- -- -- 1,950 -- -- -- - -- -- -- -- -- Dec. 30 -- -- -- -- -- -- -- -- -- 2,200 -- -- -- -- - -- -- -- -- Jan. 30, 1969 -- -- -- -- -- -- -- -- -- 2,200 -- -- -- -- - -- -- -- -- Mar. 7 -- -- -- -- -- -- -- -- -- 2,860 -- -- -- -- -- -- -- -- -- Apr.2 -- -- -- -- -- -- -- -- -- 1,800 -- -- -- -- -- -- __ -- -- May2 -- -- -- -- -- __ -- -- -- 2,200 -- -- -- - -- -- -- -- -- June 3 -- -- -- -- -- -- -- -- -- 1,600 -- -- -- -- -- -- -- -- * Residue on evaporation at 180°C. Water levels in feet below land surface Water Water Water Water Date Date Date Date level level level level Aug. 31, 1964 56.68 May 17, 1965 56.78 June 3, 1966 56.70 Feb. 27, 1968 57.68 Sept. 9 56.48 June 2 56.51 June 21 56.95 Mar. 29 57.83 Sept. 18 56.59 June 17 56.52 July 6 57.06 Apr. 26 62.03 Sept. 21 56.44 June 30 56.89 July 21 56.85 May 31 57.52 Sept. 26 56.29 July 20 57.19 Aug. 4 56.70 July 1 63.15 Oct. 5 56.51 Aug. 4 57.14 Oct. 3 56.63 July 30 57.60 Oct. 12 56.62 Aug. 25 57.20 Nov. 4 57.19 Aug. 30 57.31 Oct. 19 56.71 Sept. 10 56.82 Dec. 1 56.24 Sept. 30 57.45 Oct. 23 56.48 Oct. 5 56.48 Dec. 23 56.32 Oct. 3() 57.55 Nov. 6 56.73 Nov. 12 54.76 Jan. 26, 1967 56.78 Nov. 27 56.70 Nov. 19 56.79 Nov. 26 55.37 Feb. 27 56.85 Dec. 30 56.67 Nov. 30 56.87 Dec. 9 55.72 Mar. 28 56.78 Jan. 1, 1 969 59.54 Dec. 17 56.86 Dec. 22 53.96 May 1 56.88 Mar. 5 54.19 Dec. 28 56.81 Jan. 4, 1966 54.90 May 26 57.07 Apr. 2 56.02 Jan. 12, 1965 56.44 Jan. 18 55.06 June 28 57.32 May 2 56.75 Jan. 25 56.85 Feb. 1 55.29 July 27 57.23 June 3 52.82 Feb. 14 56.97 Feb. 23 55.92 Aug. 30 57.25 July 7 44.38 Feb. 24 56.77 Mar. 2 61.08 Oct. 3 56.66 Aug. 15 41.12 56.78 Mar. 22 56.10 Oct. 26 56.58 Sept. 24 59.38 Mar. 10 Mar. 22 56.96 Apr. 1 56.37 Nov. 29 56.44 Oct. 21 55.17 Apr. 6 56.92 Apr. 19 56.45 Dec. 28 57.78 Nov. 19 60.75 Apr. 21 56.62 May 3 56.60 Jan. 2, 1968 56.82 Dec. 17 53.72 May 7 56.91 May 16 56.62 Jan. 26 57.05 1 -- -- -- -- -- 104 Well 10 (21-64.44-7-8) Owner.--U.S.Government. Measuring point.--Top of curb, 3.0 ft above lsd. Name.--Mary Point Dug Well. Land elevation.--25 ft above msl. Location.--Lat 18° 21' 57" , long 64° 44' 16". Highest water level.--16.84 ft below lsd, Sept. 6, 1966. Description.--Dug unused water-table well, Lowest water level.--17.87 ft below lsd, Apr. 27, 1967. diam 10 ft. Records available.--Chemical analyses: October 1964. Depth.--20 ft. Water levels: 1965-67. Aquifer.--Volcanic rocks of Cretaceous age. Remarks.--Measurement discontinued, December 1967. CHEMICAL ANALYSES Milligrams per liter Specific conductance (micromhos at 25°C) Hd Fluoride (F) Dissolved solids calculated Hardness as CaCO3 Ca lcium magnesium Non- ca rbonate II!to Temperature ( °C) Sodium ( Na ) Potassium ( K) Bicarbona te ( HCO3 ) Carbonate ( CO3 ) Sulfate ( SO4 ) a):2 - le5 C) 0 .ca Date of collection Silica ( SiO2 ) 15 1-. E.L. Manganese ( Mn ) Calcium ( Ca ) CD-­ (,1 -,-; 1) '° , - , 600 .c0 . Z- °- ..c 0 Oct. 14,1964 -- -- -- Date June 18, 1965 July 20 Aug. 4 Aug. 25 Oct. 5 Oct. 26 Nov. 16 Nov. 26 Dec. 8 Jan. 4, 1966 Water level 17.48 17.54 17.50 17.54 17.27 17.01 17.00 17.00 17.14 17.30 -- -- -- -- -- 550 -- -- Water levels, in feet below land surface Water Date Date level Jan. 18, 1966 17.33 July 21, 1966 Feb. 1 17.33 Aug. 4 Feb. 23 17.47 Sept. 6 Mar. 2 17.54 Oct. 3 Mar. 22 17.38 Nov. 4 Apr. 19 17.52 Dec. 1 May 3 17.52 Dec. 23 June 3 17.58 Jan. 26, 1967 July 6 17.57 Feb. 27 Water level 17.07 17.25 16.84 17.30 17.20 17.35 17.40 17.64 17.67 496 -- Date Mar. 28, Apr. 27 May 26 June 28 July 27 Oct. 3 Oct. 26 Nov. 29 Dec. 28 Water level 1967 17.70 17.87 17.57 17.73 17.47 17.09 17.02 17.15 17.22 27 105 Owner..--U.S. Government--V.I. Government. Name.--USGS-14A (Coral Bay). Location.--Lat 18° 20' 59", long 64° 43' 23". Description.--Drilled unused water-table well, diam 6-in, cased 0-42. Depth.--80 ft. Aquifer.--Volcanic rocks of Cretaceous age. Well 11 (20-64.43-6-07) Measuring point.--Top of 6-in casing, 2.5 ft above lsd. Land elevation.--55 ft above msl. Highest water level.--15.90 ft below lsd, Jan. 4, 1966. Lowest water level.--39.01 ft below lsd, May 6, 1965. Records available.--Chemical analysis: September 1964. Water levels: 1964-67. Remarks.-- Plugged. Measurement discontinued, March 19E7. CHEMICAL ANALYSES Dissolved solids calculated Hardness as CaCO3 Ca lcium, magnesium +;) I' ., a0 Specific conductance (rnicromhos at 25°C) Hd Temperature ( °C) Milligrams per liter Date of collection Silica ( S102 ) c- rn 2 rZ Manganese 1 ( Mn ) 1 2). a 8 Bicarbonate ( HCO3 ) a) a) +2' -- :2 - a ,0 o zr . z 0 Fluoride ( F) . B -, 41 0 4.)^ i, ',9, - 5 - 1 ,', ;-­ 4" C''' BO g - i ti 'C') -6 a a) 2 -ico --.0 CZ VZ ro - fa ____ Q 0 ..-.Z C241., z- 0 -.. -' ,.., -E 0 1 Cn *, -- ^3+6 a - cn - (5­ 0 (,) o o a a. O 54 288 330 -- 94 405 0.3 1.8 -- *1,040 317 46 1,940 7.9 27 Sept. 22,1964 32 0.00 -- 38 * Residue on evaporation at 180° C. Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Sept. 18, 1964 Sept. 26 Oct. 7 Oct. 12 Oct. 19 36.88 36.47 36.49 36.56 36.65 Mar. 10, 1965 Mar. 22 Apr. 6 Apr. 20 May 6 38.50 38.65 38.79 38.89 39.01 Nov. 12, 1965 Nov. 26 Dec. 9 Dec. 22 Jan. 4, 1966 21.43 24.25 27.44 17.30 15.90 June 21, 1966 July 6 July 21 Aug. 4 Sept. 6 35.59 36.07 36.42 36.68 37.38 Oct. 23 Nov. 6 Nov. 19 36.72 36.84 36.99 May 17 June 2 June 17 31.22 25.30 28.53 Jan. 18 Feb. 8 Feb. 23 20.47 24.17 26.94 Oct. 7 Nov. 3 Dec. 1 30.19 35.65 35.97 Nov. 30 Dec. 17 37.19 37.46 June 30 July 20 31.22 34.37 Mar. 2 Mar. 22 27.97 30.28 Dec. 22 Jan. 27, 1967 26.73 31.95 Dec. 28 Jan. 12, 1965 Jan. 25 Feb. 11 Feb. 24 37.59 37.80 37.95 38.19 38.32 Aug. 4 Aug. 25 Sept. 10 Oct. 5 Oct. 26 35.68 36.87 37.45 38.13 29.37 Apr. 1 Apr. 19 May 5 May 16 June 3 31.23 32.62 33.59 34.14 34.91 Mar. 1 Mar. 28 35.40 38.69 106 Well 12 (20-64.42-1-01) Owner.--V.I. Government. Measuring point.--Top of wall, 2.0 ft above msl. Name.--Coral Bay Dug Well. Land elevation.--7 ft above msl. Location.--Lat 18" 20' 55", long 64° 42' 59". Highest water level.--3.75 ft below lsd, June 3, 1969. Description.--Dug water-table production well, Lowest water level.--7.48 ft below lsd, Mar. 22, 1965. diam 12 ft. Records available.--Chemical analyses: July to September 1963. Depth.--11 ft. Water levels: 1963-69. Aquifer.--Alluvium of Quaternary age. Remarks.--Measurement discontinued, June 1969. CHEMICAL ANALYSES Milligrams per liter Dissolved solids calculated Hardness as CaCO3 Calcium, magne sium 2 2 o o z .e. ,oo Specific conductance (micromhos at 25°C) Hd Temperature ( °C) ..cliro Manganese ( Mn ) Ca lcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bicarbonate ( HCO3 ) _c Date of collection .(.7, ---(3 g z _ , ,- .61 „, ,__, o , 2- a6-r- Sulfate ( SO4 ) Chloride ( C1) Fluoride ( F) N itrate ( NO3 ) 8- ... o_ iv - . u 0 July 17,1963 -- -- -- -- -- -- -- -- -- 350 -- -- -- -- 270 -- -- -- 26 Sept. 20 -- -- -- -- -- -- -- -- -- 406 -- -- -- -- 635 -- -- -- 29 Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Sept. 20, 1963 Oct. 25 5.31 5.82 Feb. 24, 1965 Mar. 22 7.11 7.48 Sept. 6, 1966 Oct. 7 6.42 5.85 Dec. 28, 1967 Jan. 26, 1968 6.27 6.43 Nov. 22 Dec. 23 Jan. 22, 1964 6.14 6.39 6.24 Apr. 20 May 17 July 20 6.74 5.62 6.52 Nov. 5 Dec. 1 Dec. 22 6.13 5.99 5.88 Feb. 27 Mar. 29 Apr. 25 6.55 6.93 7.10 Mar. 2 Mar. 25 Apr. 24 May 25 July 1 6.54 6.49 6.55 6.73 6.44 Aug. 25 Oct. 5 Nov. 12 Dec. 9 Jan. 4, 1966 6.41 6.12 5.39 5.58 5.74 Jan. 27, 1967 Mar. 1 Mar. 28 Apr. 27 May 26 6.31 7.10 6.79 6.89 6.75 May 31 July 17 Aug. 6 Aug. 30 Sept. 30 6.81 6.78 6.56 6.80 6.66 July 20 Aug. 25 Sept. 18 Oct. 23 Nov. 19 6.06 6.41 6.43 6.39 6.48 Feb. 8 Mar. 2 Apr. 1 May 5 June 3 6.21 6.93 6.76 6.42 6.55 June 30 July 27 Aug. 29 Oct. 3 Oct. 26 7.17 6.43 6.50 6.04 5.90 Oct. 30 Nov. 27 Dec. 30 Jan. 30, 1969 Apr. 2 6.75 5 . 65 5 . 63 5.63 5.62 Dec. 17 Jan. 25, 1965 6.95 7.38 July 7 Aug. 4 6.88 5.88 Nov. 29 6.14 June 3 3.75 Water 107 Well 13 (19-64.42-6-17) Owner .--U.SS. Government--V.I. Government. Measuring point.--Top of 6-in casing, 1.4 ft above lsd. Name.--USGS-15 (Estate Calabash Boom). Land elevation. --50 ft above msl. Location.--Lat 18° 19' 51", long 64° 42' 21". Highest water level.--40.50 ft below lsd, Jan. 18, 1966. Description.--Drilled unused water-table well, diam 6-in, Lowest water level.--44.55 ft below lsd, Mar. 22, 1965. cased 0-61, slotted 40-61 ft. Records available.--Chemical analysis: September 1964. Depth.--62 ft. Water levels : 1964-67. Aquifer.--Volcanic rocks of Cretaceous age. Remarks. --Measurement discontinued, December 1967. CHEMICAL ANALYSES -y I Ternperature ( CC) Dissolved solids calculated Hardness as CaCO3 Calcium, magnesium Non- carbonate Specific conductance (micromhos at 25°C) Hd liter Milligrams per (CO Fluoride ( F) N itrate ( NO3 ) ....a. ro .c a o v* -,C) on., o_ Bicarbonate ( HCO3 ) Carbonate ( CO3 ) Sulfa te ( SO4 ) Chloride Date of collection 0 o (1) ----, ,..c,t iii n - Ma nga nese ( Mn ) Calcium ( Ca ) Magnesium (Mg ) E 2. Z ti co h) C' a '-0 6ept. 22,1964 30 0.00 -- 106 168 802 738 0 316 1,250 0.6 0.0 -- 3,040 956 351 5,080 7.8 29 * Residue on evaporation at 180°C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level Level level Sept. 26, 1964 Oct. 7 Oct. 12 Oct. 19 Oct. 23 43.7'i 43,77 43.ei. 43.88 43.80 I Apr. 21, 19.6S M )y 6 M-ay 17 June 2 June 18 44.31 44.26 44.16 44.06 44.01 Jan. 4, 1966 Jan. 18 Feb. 8 Feb. 23 Mar. 2 42.98 40.50 43.30 43.47 43.50 Oct. 7, 1966 Nov. 3 Dec. 1 Dec. 22 Jan. 27, 1967 43.82 43.78 43.91 43.70 43.90 Nov. 6 Nov. 19 Nov. 30 Dec. 17 Dec. 18 43.9/ 44.01 44.02 44.18 44.21 June 30 July 20 Aug. 4 Aug. 25 Sept. 10 44.03 44.11 44.20 44.29 44.24 Mar. 22 Apr. 1 Apr. 19 May 5 May 16 43.62 43.73 43.87 43.87 43.88 Mar. 1 Mar. 20 Apr. 27 May 26 June 30 44.09 44.26 44.44 44.34 44.40 Jan. 12, 1965 Jan. 25 Feb. 11 Feb. 24 Mar. 10 44.35 44.38 44.46 44.46 44.50 Oct. 5 Oct. 26 Nov. 12 Nov. 26 Dec. 9 44.24 44.06 43.73 43.50 43.50 June 3 June 20 July 6 July 21 Aug. 4 43.87 44.00 44.05 43.80 43.82 July 27 Aug. 29 Oct. 3 Oct. 26 Nov. 29 44.26 44.26 44.13 43.96 43.87 Mar. 22 Apr. 6 44.55 44.46 Dec. 22 43.12 Sept. 6 43.90 Dec. ?8 44.1.: 108 Owner.--U.S. Government. Name.--NPS-10 (Lameshur Bay)• Location.--Lat 18° 19' 31", long 64° 43' 23". Description. --Drilled unused water-table well, diam 6-in, cased 0-53. Depth.--67 ft. Aquifer.--Volcanic rocks of Cretaceous age. Well 14 (19-64.43-3-47) Measuring point.--Top of 6-in casing, 1.8 ft above lsd. Land elevation.--40 ft. above msl. Highest water level.--12.97 ft below lsd, Sept. 10, 1966. Lowest water level.--41.25 ft below lsd, Oct. 30, 1968. Records available.--Chemical analyses: 1964-69. Water levels: 1964-69. CHEMICAL ANALYSES Orthophospha te ( P041 Dissolved solids calculated Hardness as CaCO3 Calcium, magnesium 1 ..,)m c c o o Z -E). raU Specific conductance (micromhos at 25°C) Hd - Temperature 1 ( °C) Milligrams per liter Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bicarbonate ( HCO3 ) Ca rbonate ( 003 ) Date of collection Silica ( Si02 ) g -4-1 ,..c... ,_,..... Ma nga nese ( Mn ) E .9 3 co - 0 a) G. 2 Fluoride ( F) 'B"-­ raj' -0 - .9 Or t5 6 b.._,z Z- •-• v) 2 - co --- o Oct. 30,1964 23 0.04 -- 70 111 626 544 -- -- 1,003 0.3 0.9 -- 2,380 631 185 4,090 7.8 29 Dec.1,1968 -- -- -- -- -- -- -- -- -- Jan. 30, 1969 -- -- -- -- -- -- Apr. 2 -- -- -- -- -- -- -- -- -- *Residue on evaporation at 180°C. Water levels, in feet below land surface s Date Water level Date Water level Date Water level Date Water level Nov. 30, 1964 Dec. 17 28.81 28.97 Oct. 5, 1965 Oct. 26 29.29 14.38 Nov. 4, 1966 Dec. 1 26.90 27.12 Mar. 29, 1968 Apr. 25 30.78 31.54 Dec. 28 29.02 Nov. 15 13.24 Dec. 22 26.25 May 31 32.08 Jan. 12, 1965 Jan. 25 29.14 29.21 Nov. 26 Dec. 9 25.52 25.47 Jan. 27, 1967 Mar. 1 25.84 26.79 July 17 Aug. 6 32.64 32.75 Feb. 14 Feb. 24 Mar. 10 29.35 29.42 29.52 Jan. 4,1966 Jan. 18 Feb. 8 14.20 20.39 22.14 Mar. 28 Apr. 27 May 26 27.52 28.20 28.58 Aug. 30 Sept. 30 Oct. 30 32.78 32.93 41.25 Mar. 22 29.59 Feb. 23 23.04 June 30 29.05 Nov. 27 33.17 Apr. 6 29.70 Apr. 1 24.78 July 27 29.35 Dec. 30 32.25 Apr. 20 May 6 June 18 June 30 July 20 29.78 29.89 28.05 28.26 28.20 May 23 June 17 July 17 Aug. 15 Sept. 10 26.20 27.71 26.55 27.46 12.97 Aug. 29 Oct. 26 Nov. 29 Dec. 28 Jan. 26, 1968 29.63 29.83 30.04 30.20 30.38 Jan. 30, 1969 Apr. 2 June 3 Sept. 24 Oct. 21 a 36.80 a 29.95 17.29 14.09 23.98 Aug. 25, 28.68 Oct. 7 26.97 Feb. 27 30.57 Dec. 17 19.13 109 Owner. --U.S. Government-V.I. Government. Name.-- USGS-16 (Estate Herman Farm). Location.-- Lat 18° 20' 43", long 64° 45' 47". Description. -- Drilled water-table production well, diam 6-in, cased 0-158, perforated 50-158 ft. Depth.--158 ft. Aquifer.--Volcanic rocks of Cretaceous age. Well 15 (20-64.45-4-23) Measuring point.--Top of 6-in casing, 1.10 ft above lsd. Land elevation.--650 ft above msl. Highest water level.--33.27 ft below lsd, Aug. 15, 1969. Lowest water level.--70.04 ft below lsd, Oct. 30, 1968. Records available.--Chemical analyses : 1964-69. Water levels: 1964-69. Remarks. --Measurement discontinued, August 1969. CHEMICAL ANALYSES Milligrams per liter ficT ....z Z ---- Orthophospha te ( PO4) Dissolved solids calculated Hardness as CaCO3 Calcium, magne sium Non- ca rbonate Specific conduc tance (micromhos at 25°C) Temperature 1 °C) ( Date of collection '--). 0 _•-• cn J) Iron (Fe) Ma nganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) #.,a) .8 , C 1 0 --- CO Carbonate ( CO3 ) Sulfa te ( SO4 ) Chloride ( Cl) Fluoride ( F) Oct. 23, 1964 June 28, 1967 July 27 Aug. 29 Nov. 29 36 36 36 36 40 0.00 .01 .02 .14 .01 -- 0.01 .0 .0 .0 52 56 52 56 54 51 49 51 51 60 161 173 186 180 218 646 660 668 682 770 0 0 0 0 0 22 26 28 25 24 90 98 112 105 132 0.6 11 817 .9 9.9 -- * 791 .7 9.7 -- *824 .7 7.0 -- *788 1.410.0 -- 876 339 341 339 349 380 0 0 0 0 0 1,310 1,290 1,340 1,380 1,460 8.2 7.8 8.2 8.0 8.1 26 -- 27 -- -- Dec. 28 Jan. 26, 1968 Feb. 27 Mar. 29 Apr. 25 38 39 38 34 40 .00 .00 .00 .00 .00 .01 .1) .0 .0 .0 58 56 56 10 52 60 54 50 45 50 210 210 3.8 212 3.8 209 3.6 213 4.0 770 634 642 496 700 0 31 24 35 0 21 29 21 27 24 130 136 140 130 135 .9 10.0 -- *833 1.1 9.6 -- 882 1.1 10.0 -- 872 .7 4.0 0.0 796 1.3 9.5 .0 900 390 360 344 210 335 0 0 0 0 0 1,440 1,430 1,440 1,270 1,460 8.2 8.6 8.5 8.7 8.1 -- -- 27 23 27 May 31 July 1 July 30 Sept. 30 Oct. 30 39 41 39 .00 -- -- .00 .0 . 0 42 62 8.9 52 5.5 49 -- 200 203 206 -- 3.4 3.2 3.4 -- 628 504 476 -- 31 24 33 41 29 27 120 138 130 130 .8 .6 .7 2.4 .0 7.5 .0 8.5 .0 -- -- 851 755 736 -- 360 236 215 -- 0 0 0 -- 1,490 1,260 1,360 -- -- 8.6 8.6 8.7 -- -- -- -- -- -- Nov. 27 Dec. 30 Jan. 30, 1969 Apr. 2 May 2 -- -- -- -- -- ---- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 120 120 120 110 120 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- June 3 -- -- 110 - -- -- *Residue on evaporation at 180' ( . .. 110 Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Wa te r level Nov. 6, 1964 43.69 Aug. 25, 1965 46.71 July 6, 1966 41.39 Nov. 29, 1967 Nov. 19 43.89 Sept. 10 46.89 July 21 41.99 Dec. 28 53.78 Nov. 30 44.09 Oct. 5 47.32 Aug. 4 41.50 Jan. 26, 1968 54.58 Dec. 17 44.42 Nov. 12 46.58 Sept. 6 43.35 Feb. 27 55.05 Dec. 28 44.62 Nov. 26 45.46 Oct. 3 43.40 Mar. 29 54.60 Jan. 12, 1965 45.20 Dec. 9 44.44 Nov. 3 43.05 Apr. 25 57.93 Jan. 25 45.43 Dec. 22 40.82 Dec. 1 43.51 May 31 58.98 Feb. 11 45.76 Jan. 4, 1966 39.00 Dec. 22 44.02 July 1 56.85 Feb. 24 45.95 Jan. 18 36.40 Jan. 26, 1967 45.75 July 33 56.39 Mar. 10 46.19 Feb. 1 34.82 Mar. 1 45.62 Aug. 30 65.48 Mar. 22 46.43 Feb. 23 35.12 Mar. 23 Sept. 30 56.93 Apr. 6 46.67 Mar. 8 35.72 Apr. 27 48.98 Oct. 30 0 70.04 Apr. 20 46.84 Mar. 22 36.35 May 26 51.50 Nov. 27 57.33 May 6 47.01 Apr. 1 36.68 June 28 52.08 Dec. 30 56.27 May 17 47.11 Apr. 19 37.67 July 27 62.88 Jan. 30, 1969 56.03 June 2 46.90 May 3 38.19 Aug. 29 58.30 Mar. 5 55.28 June 18 46.53 May 16 38.43 Aug. 30 Apr. 2 54.54 June 30 46.22 June 3 39.57 Oct. 3 June 3 46.89 July 20 46.05 June 21 40.57 Oct. 28 Aug. 15 33.27 Aug. 4 46.30 a - pumping Well 16 (20-64.45-2-21) Owner.--U.S. Government. Measuring point.--Top of cover, 2.2 ft above lsd. Name.--Estate Adrian Dug Well. Land elevation.--620 ft. Location.--Lat 18° 20' 43", long 64° 45' 55". Highest water level.--14.90 ft below lad, Nov. 22, 1963. Description.--Dug unused water-table well, Lowest water level.--Dry. diam 10 ft. Records available.--Chemical analysis: April 1963. Depth.-- 23 ft. Water levels: 1963-67. Aquifer.--Alluvium of Quaternary age. Remarks.--Measurement discontinued, October 1967. CHEMICAL ANALYSES Milligrams per l•ter Ort hophospha te ( PO4) Dissolved solids calculated Hardness as CaCO3 Ca lcium, mag ne sium 1 00 'r. e, r0 0 Specific conduc tance (microm hos a t 25 °C) d a) 4... Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Date of collection a Carbonate ( 003 ) Sulfate ( SO4 ) o 5 . - C.) a)- Fluoride ( F) " ,;; 0- ,,+ o ma S-_,)o e. (-) (0 X .-.0 - b...7. ..- a 1-) 0 _ '-' a) - 0 Eri s-: - Z.- 0 E CO . .. .:e Apr. 3,1963 -- -- -- -- -- -- -- -- 140 -- -- -- -- 400 -- __ -- ?. ,I Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Sept. 20, 1963 15.12 Sept. 18, 1964 21.82 Dec. 9, 1965 f Dec. 1, 1966 22.44 Oct. 25 14.92 Oct. 23 22.46 Jan. 4, 1966 20.39 Dec. 22 f Nov. 22 14.90 Nov. 19 f Feb. 1 18.23 Jan. 26, 1967 f Dec. 23 16.22 Dec. 17 f Mar. 2 17.55 Mar. 1 f Jan. 22, 1964 16.83 Jan. 25, 1965 f Apr. 1 17.61 Mar. 28 f Mar. 2 17.92 Feb. 24 f May 3 18.36 Apr. 27 f Mar. 25 18.60 Mar. 22 f June 3 19.31 May 26 f Apr. 24 May 25 July 1 19.39 20.72 16.85 Apr. 20 July 20 Aug. 25 f f f July 7 Aug. 4 Sept. 6 20.77 21.34 22.16 July 27 Aug. 29 Oct. 3 f f f July 20 20.94 Oct. 5 f Oct. 3 22.27 Oct. 26 f Aug. 25 21.49 Nov. 12 f Nov. 3 22.77 f - dry 0 -- 111 Owner.--U.S. Government--V.I. Government. Name.--USGS-13 (Estate Adrian ) Location.--Lat 18° 20' 33", long 64 46' 11". Description. --Drilled unused water-table well, diam 6-in, cased 0-54. Depth.--60 ft. Aquifer. --Volcanic rocks of Cretaceous age. Well 17 (20-64.46-4-49) Measuring point. --Top of 6-in casing, 1.8 ft above lsd. Land elevation.--580 ft above msl. Highest water level.--13.87 ft below lsd, June 3, 1969. Lowest water level.--32.23 ft below lsd, Sept. 30, 1968. Records available.--Chemical analysis: August 1964. Water levels: 1964-69. Remarks. --Measurement discontinued, August 1969. CHEMICAL ANALYSES liter ( Cl) Specific conduc tance (micromhos at25°C) Hd Temperature 1 (°C) Milligrams per Dissolved solids calculated Hardness as CaCO3 .... a Ma nga nese ( Mn ) Calcium ( Ca ) Magnesium ( Mg Sodium ( Na ) Pota ssium ( K) Bicarbonate ( HCO3 ) Sulfa te ( SO4 ) Chloride a. .cc aa _ _c Fluoride ( F) Nitra te ( NO3 ) .._. Y ..., a u - 0 ,, -. k.) o c.... c 0 2 --­ ,-, Z -e. Ca lcium, magne sium O 1 .... ro .., c c -8 0 , o ,n_ a- :..) ...., ,J ,'_1 u * ;,1.1g.25, 1964 23 0.00 -- 42 67 181 53c 22 222 .3 0.P 751 38,, 1,490 8.1 28 * Residue on evaporation at 180°C. vels, in feet below land surface o Date Water level Date Water level Date Water level Date Water level Sept. 9, 1964 Sept. 18 Sept. 21 Sept. 28 Oct. 7 27.35 25.87 26.99 25.46 27.43 May 6, 1965 May 11 June 2 June 18 June 30 20.18 26.75 25.71, 27.48 27.16 Apr. 19, 1966 May 3 May 16 June 3 June 2(1 25.70 25.70 26.54 27.27 27.14 Oct. 3, 1967 Oct. 26 Nov. 29 Dec. 28 Jan. 26, 1968 28.35 29.21 28.50 29.81 29.87 Oct. 12 Oct. 19 Oct. 23 Nov. 6 Nov. 19 27.95 28.34 28.34 28.47 27.75 July 20 Aug. 4 Aug. 25 Sept. 10 Oct. 5 28.27 27.30 28.33 28.56 28.28 July 6 July 21 Aug. 4 Sept. 6 Oct. 3 27.25 24.79 26.07 27.78 25.50 Feb. 27 Mar. 29 Apr. 25 May 31 July 1 30.55 30.21 31.02 31.02 30.68 Nov. 30 Dec. 17 Dec. 22 Jan. 12, 1965 Jan. 25 27.86 28.20 28.48 28.98 28.74 Nov. 12 Nov. 26 Dec. 9 Dec. 22 Jan. 4, 1966 24.38 25.62 27.27 21.09 22.12 Nov. 3 Dec. 1 Dec. 22 Jan. 26, 1967 Mar. 1 27.41 27.90 27.36 26.94 27.48 July 30 Aug. 30 Sept. 30 Oct. 30 Nov. 27 30.42 30.99 32.23 35.02 27.63 Feb. 11 Feb. 24 Mar. 10 Mar. 22 Apr. 6 29.21 29.23 29.47 29.59 25.79 Jan. 18 Feb. 1 Feb. 23 Mar. 8 Mar. 22 23.00 25.11 25.84 25.95 23.27 Mar. 28 Apr. 27 May 26 June 28 July 27 28.74 28.69 27.86 27.55 29.09 Dec. 30 Jan. 30, 1969 Apr. 2 May 2 June 3 25.34 24.86 26.62 27.80 13.87 Apr. 30 29.07 Apr. 1 26.55 Aug. 29 29.30 Aug. 15 19.61 _ _ 112 Well 18 (19-64.47-2-49) Owner.--A. Massac. Name.--Great Cruz Bay Dug Well. Location.--Lat 18° 19' 34", long 64° 47' 10". Description.--Dug unused water-table well. Depth.--13 ft. Aquifer.--Alluvium of Quaternary age. Measuring point.--Top of wall 0.6 ft above lsd. Land elevation.--12 ft above msl. Highest water level.--5.80 ft below lsd, Jan. 18, 1966. Lowest water level.--11.55 ft below lsd, July 1, 1964. Records available.--Chemical analysis: July 1963. Water levels : 1963-67. Remarks.--Measurement discontinued, December 1967. CHEMICAL ANALYSES Date of collection Silica (Si02 ) a u, .,---• tp,c - a Calcium ( Ca ) 1 Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bicarbonate ( HCO3 ) Carbonate ( CO3 ) Sulfate ( SO4 ) Chloride ( Cl) Fluoride (F) Milligrams per liter a) ...,ro .c a -c0 Z- .2 - t0 paleTnoreo spTiospentossm Hardness as CaCO3 Ca lcium, magne sium Non- carbonate Specific conductance (micromhos at 25°C) Hd Temperature ( CC) July 22, 1963 -- -- -- -- -- -- -- -- -- 370 -- - - -- - - 420 -- -- -- 26 Water levels, in feet below land surface Date Water level. Date Water level Date Water level Date Water level Sept. 20, 1963 7.83 Nov. 19, 1964 8.97 Jan. 4, 1966 5.92 Dec. 22, 1966 8.99 Sept. 25 8.20 Dec. 17 8.62 Jan. 18 5.80 Jan. 26, 1967 9.20 Oct. 22 8.84 Jan. 25, 1965 9.81 Feb. 1 6.36 Mar. 1 9.63 Dec. 23 9.54 Feb. 24 10.40 Mar. 2 7.40 Mar. 23 10.06 Jan. 22, 1964 10.00 Mar. 22 10.68 Apr. 1 7.09 Apr. 27 10.55 Mar. 2 10.70 Apr. 21 9.77 May 2 7.85 May 27 10.42 Mar. 25 10.98 May 17 8.22 June 3 8.51 June 28 10.26 Apr. 24 11.07 July 20 8.28 July 6 9.56 July 27 10.53 May 25 11.44 Aug. 25 9.15 Aug. 4 9.37 Aug. 29 9.73 July 1 11.55 Oct. 5 8.93 Sept. 6 9.36 Oct. 3 9.72 July 20 10.51 Oct. 26 7.96 Oct. 7 8.73 Oct. 26 9.42 Aug. 25 11.15 Nov. 15 6.64 Nov. 3 8.40 Nov. 29 8.38 Oct. 23 9.26 Dec. 9 6.24 Dec. 1 9.22 Dec. 28 8.82 113 Well 19 (20-64.47-5-99) Owner .--U.S. Government--V.I. Government. Measuring point.--Top of 6-in casing, 4.3 ft above lsd. Name.--USGS-12 (Cruz Bay Gut). Land elevation.--260 ft above msl. Location.--Lat 18° 20' 04", long 64° 47' 07". Highest water level.--18.21 ft below lsd, Aug. 15, 1969. Description.--Drilled unused water-table well, Lowest water level.--29.44 ft below lsd, Nov. 29, 1968. diam 6-in, cased 0-151, slotted 110-150 ft. Records available.--Chemical analysis: March 1964. Lbpth.--192 ft. Water levels: 1964-69. Aquifer.--Volcanic rocks of Cretaceous age. Remarks.--Measurement discontinued, August 1969. CHEMICAL ANALYSES Hardness as CaCO3 Calcium, magne sium Non- carbonate Specific conduc tance (micromhos at25°C) Hd Milligrams per liter Carbonate ( CO3 ( Sulfa te ( SO4 ) Chloride ( Cl) Fluoride ( F) Nitra te ( NO3 ) Ort hophosphate ( PO4) Dissolved solids calculated Temperature ( °C) a ....,ro Calcium ( Ca ) Magnesium (Mg ) Sodium ( Na ) Potassium ( K) Date of collection _... 'in - o c c c o`" c" 0 --, te cn____ to X cri c - 2 Mar. 2,1964 47 0.00 -- 80 46 53 452 0 11 85 0.2 0.7 -- * 612 388 17 942 7.9 28 * Residue on evaporation at 180°C. Water levels, in leet below land sur face Date Water level Date Watot level Date Watel level Date Water level May 14, 1961 May 19 May 22 June I June 8 21.08 21.09 21.00 21.28 21.38 Dec. 12, 1 964 Dec. 29 Jan. 12, 1965 Jan. 25 Feb. 11 24.18 24.29 24.45 24.66 Jan. 4, 1966 Jan. 18 l'eb. 1 l'eb. 23 Mar. 8 21.48 20 .1 5 20.22 20.42 20.66 July 27, 1967 Aug. 21 Oct. 3 Oct. 26 Nov. 29 25.20 25.66 25.98 26.39 26.02 June 15 June 22 June 29 July 6 July 13 21.60 20.65 21.96 21.84 21./18 Feb. 24 Mar. 11 Mar. 22 Apr. 6 Apr. 26 25.06 25.30 25.36 25.66 25.88 Mar. 22 Apr. 1 Apr. 19 May 3 June 3 19.22 20.38 20.56 20.65 20.97 Dec. 28 Jan. 26, 1968 l'eb. 27 Mar. 29 Apr. 25 26.38 26.65 27.06 27.40 27.56 July 29 Aug. 3 Aug. 25 Aug. 31 Sept. 7 21.19 22.16 22.47 22.64 22. (1 May 6 May II une 2 lane 18 JT‘ W 26.04 25.96 24.85 24.93 25.e2 June 21 July 6 July 21 Aug. 4 Sept. 6 21.12 21.26 21.40 21.55 21.70 May 31 July 1 July 30 Aug. 30 Sept. 30 27.87 28.16 28.47 28.61 28.90 Sept. I/I Sept. 21 Sept. 28 Oct. 7 Oct. 12 :2. ). 21. .6 21. •6 t. 1.! 1 Aug. ScIA. Ot. 25.17 25.36 25.73 25.89 26.01. Oct. 3 Nov. 3 Dec. 1 Dec. 23 Jan. 26, 1967 21.80 21.27 21.87 22.19 22.46 Oct. 30 Nov. 29 Dec. 30 Jan. 30, 1969 Mar. 5 29.30 29.44 28.36 27.79 26.03 Oct. 19 Oct. 23 6 Nov. 19 Nov. 1' 2 i. I7 23.28 23.56 21.74 23.89 Jet •!t Nov. 12 Nov. 26 Dec. 9 Dec. 22 25.46 24.77 24.40 24.03 22.48 Mar. 1 Mar. 28 Apr. 27 May 26 June 28 22.66 23.33 23.75 24.35 24.78 Apr. 2 May 2 June 3 July 7 Aug. 15 26.81 27.47 24.64 19.99 18.21 114 Well 20 (20-64.47-6-86) Owner.--U.S. Government. Measuring point.--Top of 4-in casing, 1.4 ft above lsd. Name.--NPS-2 (Cruz Bay). Land elevation.--60 ft above msl. Location.--Lat 18° 20' 10", long 64° 47' 26". Highest water level.--37.06 ft below lsd, Jan. 18, 1966. Description.--Drilled unused water-table well, Lowest water level . --42.56 ft below lsd, Aug. 30, 1967. diam 6-in, cased 0-20. Records available.--Chemical analysis: May 1964. Depth.--99 ft. Water levels: 1964-67. Aquifer.--Volcanic rocks of Cretaceous age. Remarks.--Measurement discontinued, December 1967. CHEMICAL ANALYSES Milligrams per liter Specific conduc tance (micromhos a t 25°C) Hd Dissolved solids calculated Hardness as CaCO3 ,'] r0 Temperature ( °C) Date of collection Silica ( SiO2 ) E. . .-. - Manganese ( Mn ) Ca lcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) Bicarbona te ( HCO3 ) Ca rbonate ( CO3 ) Sulfa te ( SO4 ) Chloride ( C1) Fluoride ( F) (1)- _a 2. ,,(5) ,t. b -co c.a. -,zz- 2- t0 2 Calcium, mag ne sium , ro c c 0 0 z , ,i,u .0, May 18,1964 31 0.00 -- 66 67 377 664 -- 46 470 0.6 4.9 -- 1,400 440 9 2 , 490 7 .9 28 * Residue on evaporation at 180°C. Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level May 19, 1964 May 22 May 25 June 1 42.19 39.70 39.63 39.93 Oct. 23, 1964 Nov. 6 Nov. 19 Nov. 30 39.74 39.85 39.94 40.05 Aug. 4, 1965 Aug. 25 Sept. 10 Oct. 25 40.18 40.30 40.38 41.03 July 6, 1966 July 21 Aug. 4 Sept. 6 40.08 40.07 40.28 39.98 June 8 40.01 Dec. 17 40.10 Nov. 17 39.78 Oct. 7 39.80 June 15 39.98 Dec. 28 39.70 Nov. 26 39.73 Nov. 4 39.29 June 22 39.99 Jan. 12, 1965 40.27 Dec. 22 37.29 Dec. 1 39.55 June 29 39.85 Jan. 25 40.38 Jan. 4, 1966 37.27 Dec. 27 39.73 July 6 July 13 39.68 40.40 Feb. 14 Feb. 24 40.56 40.64 Jan. 18 Feb. 1 37.06 37.46 Jan. 26, 1967 Feb. 27 39.92 40.32 July 20 Aug. 3 Aug. 25 Aug. 31 Sept. 9 39.33 39.22 39.53 39.56 39.69 Mar. 10 Mar. 22 Apr. 6 Apr. 21 May 7 40.71 40.78 40.82 40.81 40.85 Feb. 23 Mar. 2 Mar. 22 Apr. 1 Apr. 19 38.37 38.83 38.13 39.04 39.28 Mar. 29 May 1 May 26 June 28 July 27 40.49 41.92 41.58 42.11 41.38 Sept. 18 Sept. 21 Sept. 26 Oct. 7 39.77 39.80 39.75 39.65 May 11 June 2 June 17 June 30 39.93 39.80 39.57 39.64 May 3 May 16 June 3 June 21 39.49 39.68 39.76 40.08 Aug. 30 Oct. 2 Nov. 27 Dec. 28 42.56 40.91 40.30 40.24 Oct. 12 39.64 115 Well 21 (20-64.47-7-86) Owner.--U.S. Government. Measuring point.--Top of 6-in casing, 1.2 ft above lsd. Name.--NPS-3 (Cruz Bay). Land elevation.--40 ft above msl. Location.--Lat 18° 20' 09", long 64° 47' 28". Highest water level.--22.92 ft below lsd, June 3, 1969. Description. --Drilled water-table production well, Lowest water level.--49.12 ft below lsd, Oct. 5, 1965. diam 6-in, cased 0-25. Records available.--Chemical analyses: 1964-67. Depth.--54 ft. Water levels: 1964-69. Aquifer.--Volcanic rocks of Cretaceous age. Remarks.--Not pumped since June 1967. CHEMICAL ANALYSES Milligrams per liter a) .... Dissolved solids calculated Hardness as CaCO3 Calcium, magnesium Non- carbonate Specific conductance (micromhos at 25 °C) - no Manga nese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bicarbonate ( HCO3 ) Date of collection .ccl. $2. 7, .l' --- 2 0 a) b. 5 0 -5 cn 7d - SI - Fluoride ( F) (CON) 91eATN 0 ,T. ,,_0-c , - ... 0 0 ,(12, 7' i7, 44 42 Sr :. ' (7; _ o- (0- c.n - 0 C.) t 0 June 3, 1964 34 0.00 -- 94 77 320 632 0 45 480 0.5 4.4 -- *1,420 551 33 2,270 7.8 -- May 7, 1965 -- -- -- -- -- -- -- -- -- 440 -- -- -- * -- 464 -- -- -- -- June 17 32 .00 -- 98 69 345 614 8 82 472 .6 12 -- *1,43C 528 11 2,390 8.3 -- July 21,1966 36 .00 0.00 106 79 345 624 0 51 542 .4 12 -- * 1, 560 590 78 2,640 7.8 -- May 26,1967 37 .01 .00 112 88 332 610 10 64 545 .5 12 -- 1,580 642 - '5 2,690 8.3 -- * Residue on evaporation at 180 C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level June 8, 1964 26.48 Feb. 14, 1965 27.04 Mar. 22, 1966 25.80 Oct. 26, 1967 26.77 June 15 26.49 Feb. 24 27.09 Apr. 1 25.93 Nov. 27 26.18 June 22 26.36 Mar. 10 27.12 Apr. 19 26.25 Dec. 28 26.63 June 29 26.07 Mar. 22 27.16 May 3 30.67 Jan. 26, 1966 26.77 July 6 25.68 Apr. 6 27.18 May 16 26.52 Feb. 27 27.17 July 13 25.97 Apr. 21 27.46 June 3 27.16 Mar. 29 27.10 July 20 25.31 May 7 27.22 June 21 26.77 Apr. 25 27.25 Aug. 3 25.73 May 11 26.41 July 6 26.62 May 31 27.37 Aug. 25 26.16 June 2 25.31 July 21 26.56 July 1 27.26 Aug. 31 26.09 June 17 25.89 Aug. 4 26.67 July 30 27.00 Sept. 9 26.19 June 30 26.19 Sept. 6 26.35 Aug. 30 26.44 Sept. 18 26.34 July 22 26.78 Oct. 7 25.86 Sept. 30 26.78 Sept. 21 26.33 Aug. 4 26.62 Nov. 4 26.11 Oct. 30 27.07 Sept. 26 26.04 Aug. 25 27.36 Dec. 1 26.27 Nov. 27 26.59 Oct. 5 25.87 Sept. 10 26.93 Dec. 27 26.11 Dec. 30 26.02 Oct. 12 25.98 Oct. 5 49.12 Jan. 26, 1967 26.46 Jan. 30, 1969 26.23 Oct. 19 26.14 Oct. 26 26.05 Feb. 27 26.76 Mar. 5 25.28 Oct. 23 26.20 Nov. 17 26.28 Mar. 28 29.62 Apr. 2 26.19 Nov. 6 26.31 Nov. 26 a 30.40 May 1 28.18 May 2 26.80 Nov. 19 26.32 Dec. 22 25.68 May 26 48.55 June 3 22.92 Nov. 30 26.40 Jan. 4, 1966 24.38 lune 28 27.79 Sept. 24 23.19 Dec. 17 26.44 Jan. 18 24.54 July 27 27.16 Oct. 20 24.78 Dec. 28 26.51 Feb. 1 25.54 Aug. 30 26.99 Nov. 19 26.84 Jan. 12, 1965 26.79 Feb. 23 25.78 Oct. 6 26.88 Dec. 17 23.86 Jan. 25 26.90 Mar. 2 26.70 a - pumping CARIBBE AN SEA BUCK ISLAND 17°45' 3360 C RIBBE AN SEA 17.40' EXPLANATION 02 43345 Str•O, .t4 ron 64°50 64°45' 64°40: Figure 4 .--Locations of stations in St . Croix. 117 ST. CROIX, VIRGIN ISLANDS STREAMFLOW STATIONS 3320. River Gut at Riv.ir, St. Croix, V.I. Location.--Lat 17° 44' 32", long 64° 48' 50", 0.3 mile west of Coble, 4.8 miles northeast of Ft. Frederick, Frederiksted. Drainage area.--1.42 sq mi. Records available.--Discharge: January 1963 to September 1967. Chemical analyses: 1962-67. Gage.--Water-stage recorder and concrete control. Altitude of gage is 155 ft (from topographic map). Extremes.--Maximums and minimums (discharge in gallons per minute, gage height in feet). Annual maximum discharges for years 1963-67 Annual minimum discharges for years 1963-67 Date Time Discharge Gage height Date Time Discharge Gage height May 18, 1963 1000 76,000 3.39 1963 -- 20 -- Sept. 22, 1964 1200 860 1.53 1964 -- 3 -- ',lay 24, 1965 1500 5,300 1.94 1965 -- 3 -- Oct. 14, 1966 0400 2,850 1.77 1966 -- No flow -- June 20, 1967 1200 +5,951 1.98 1967 -- No flow -- + Period January to September. 1963-1967: Maximum discharge, 76,000 gpm May 18, 1963 (gage height 3.39 ft); minimum discharge, many days of no flow 1966-67. Remarks.--Records poor. 19 observations of no flow from Oct. 10, 1967 to May 7, 1969. Discharge in thousand gallons per day, calendar year 1963 Day Jan. Feb. — lIar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 75 75 50 SO 75 50 100 560 100 140 180 140 2 75 100 50 75 75 75 100 3,930 100 270 5,320 140 3 4 5 5,310 6,280 950 140 180 220 50 35 35 50 50 50 75 75 75 75 75 SO 75 75 75 220 100 75 180 270 140 140 140 140 800 370 270 140 140 131 6 540 270 50 140 75 50 75 75 1,120 140 220 131 7 540 180 50 483 75 50 220 75 540 140 180 123 8 370 140 35 370 75 50 140 100 180 140 220 123 9 370 180 35 27.0 75 50 100 100 180 140 420 123 10 320 180 35 180 75 50 75 75 220 140 270 131 11 370 270 35 100 180 50 75 75 270 140 220 123 12 420 140 35 75 180 50 75 75 220 180 180 115 13 420 100 50 75 270 50 300 75 180 140 180 115 14 ,!.-, 370 320 100 140 50 50 75 75 220 180 50 50 370 180 75 75 140 180 270 370 180 178 107 99 16 ,7 L8 270 270 270 180 140 180 75 75 50 75 100 100 530 730 9,840 35 35 35 75 75 75 100 100 100 180 140 140 180 140 180 166 175 193 107 107 115 19 220 180 75 75 660 515 75 100 100 180 184 107 20 180 140 100 75 320 320 75 100 100 140 157 99 21 22 23 24 25 220 100 140 140 75 220 180 100 100 75 75 75 75 75 75 75 75 75 75 100 140 75 75 75 75 100 100 100 75 75 50 50 50 50 75 100 75 75 75 75 100 140 220 180 180 140 140 140 140 180 166 149 149 149 175 107 99 84 84 91 26 75 75 100 140 75 75 75 75 140 140 157 91 27 28 29 30 31 50 75 75 75 75 35 35 -- 75 75 75 75 50 100 75 75 75 75 100 75 lot 75 75 477 270 180 75 180 140 75 75 1,420 660 220 140 100 27, 180 140 180 370 180 100 100 100 149 166 140 131 91 99 107 107 107 — ---- --- Total Mean Max Min 19,340 624 6,280 50 4,055 145 270 35 1,845 60 100 35 3,405 113 480 50 14,800 477 9,840 75 3,292 110 515 35 3,230 104 370 50 9,200 297 3,930 7 5 6,41u 214 1,120 hi, 5,180 167 370 100 11,594 386 5,320 131 3,483 112 140 84 Min-- In. -- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- Ac -ft -- -- -- -- -- -- -- -- -- __ -- -- C :57' Year 1963 : Total 85,834 235 Max 9, 84( Min 35 Ac-ft 5 10 15 20 25 30 118 Discharge in thousand gallons per day, calendar year 1964 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 123 84 54 47 54 46 10 28 40 28 22 22 2 157 131 56 47 54 61 6 28 34 28 22 34 3 140 115 69 47 54 54 6 28 34 22 22 28 4 220 99 61 40 54 47 6 28 34 22 22 22 149 84 61 54 55 47 6 22 28 22 22 28 6 7 149 149 84 91 61 61 40 40 54 54 40 34 6 6 22 22 28 28 22 22 22 22 28 22 8 123 91 54 47 47 28 4 22 22 22 22 22 9 149 91 54 40 54 28 4 22 22 22 22 22 131 115 56 34 54 22 4 22 22 22 22 22 11 107 123 58 34 47 22 6 22 22 22 22 22 12 115 123 54 34 47 22 22 22 22 22 22 22 13 140 115 54 77 54 22 62 22 22 22 22 22 14 131 107 61 54 47 18 47 22 22 22 22 18 107 109 73 40 47 18 24 22 22 22 28 22 16 91 95 55 28 47 18 18 22 18 22 28 22 17 107 85 54 22 47 18 18 22 18 22 28 22 18 115 84 47 22 47 24 18 22 18 47 34 18 19 115 77 47 28 40 18 22 18 18 34 28 18 140 77 47 28 34 18 22 18 18 22 28 18 21 149 77 47 40 34 10 22 18 18 22 22 18 22 123 77 40 34 34 14 22 18 116 22 22 18 23 107 80 40 34 34 22 22 28 47 22 22 18 24 107 85 40 34 34 18 22 22 22 22 22 18 107 61 40 34 28 14 28 22 40 22 22 18 26 107 69 40 47 28 10 34 18 34 22 22 18 27 99 61 47 54 28 10 28 18 34 22 22 18 28 84 54 40 54 22 10 28 40 34 22 18 18 29 77 54 47 61 10 6 28 28 28 22 18 18 69 47 61 10 4 28 84 28 22 18 18 31 77 47 10 28 40 22 18 Total 3,764 2,598 1,612 1,256 1,263 723 607 792 893 731 690 652 Mean 121 89.6 52.0 42 41.9 24.1 20 25.6 29.8 23.6 23.0 21.0 Max 220 131 73 77 55 61 62 84 116 47 34 34 Min 69 54 40 22 10 4 4 18 18 22 18 18 Cfsm In. Ac-ft Year 1964 : Total 15,581 Mean 42.6 Max 220 Min 4 Cfsm -- Ac-ft 5 10 15 20 25 30 1 Discharge in thousand gallons per day, calendar year 1965 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 3 4 18 18 18 18 18 6 10 18 18 14 18 18 18 18 18 22 22 28 42 34 18 18 18 49 66 40 40 40 40 54 22 22 22 18 18 10 14 14 22 14 10 6 10 18 22 10 10 6 6 4 6 6 6 14 6 18 14 14 14 10 7 8 9 18 18 18 18 10 10 14 14 22 18 22 22 28 302 34 28 34 28 36 34 47 40 40 34 14 18 14 14 10 14 14 14 10 10 17 10 4 4 4 4 4 18 14 102 10 10 10 10 18 10 22 34 34 34 14 22 10 4 14 6 11 12 13 14 18 18 18 18 18 10 10 6 10 10 22 22 22 18 18 28 22 22 22 93 28 22 22 22 22 34 40 34 28 28 18 18 18 18 14 14 14 14 28 22 10 10 10 10 10 4 4 4 4 4 10 16 30 28 22 333 863 234 131 61 16 17 18 19 18 18 18 18 16 14 14 14 14 14 18 18 18 22 22 28 18 18 18 22 22 49 1,305 270 236 22 22 22 40 88 10 10 14 14 14 18 14 9 6 6 10 6 6 6 6 4 24 12 10 27 14 42 18 18 22 54 47 40 40 40 21 22 23 24 18 14 14 14 14 18 18 18 18 18 18 102 48 168 34 18 40 37 28 28 306 95 69 2,630 2,145 59 68 60 40 34 10 14 10 14 10 14 10 10 14 18 17 14 14 10 10 14 14 10 6 6 22 22 28 28 148 36 40 47 47 61 26 27 28 29 31 14 14 14 10 10 10 18 10 18 -- 34 28 28 22 119 28 28 34 28 22 22 301 74 54 185 267 73 28 20 28 28 22 18 28 22 22 29 14 18 14 14 10 10 10 10 10 10 10 10 6 10 6 6 6 6 138 47 34 28 22 95 61 54 47 47 54 Total Mean 506 16.3 384 13.7 1,025 33.1 1,150 38.3 8,532 275 1,162 38.7 515 16.6 435 14.0 322 10.7 243 7.8 927 30.9 2,548 82.2 Max Min 18 10 18 6 168 18 302 18 2,630 18 88 22 29 10 28 6 22 6 27 4 148 4 863 6 Cfsm In. Ac-ft Year 1965 : Total 17,749 Merin 48.6 Max 2,630 Min Cfsm In. Ac-ft 5 10 15 20 25 30 120 Discharge in thousand gallons per day, calendar year 1966 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 54 40 34 18 6 4 0 0 0 0 6 10 2 54 40 34 18 4 6 0 0 0 0 4 10 3 54 40 34 18 4 4 0 0 0 0 6 52 4 54 34 40 14 6 4 0 0 0 0 10 14 54 34 40 14 4 1 0 0 0 0 6 25 6 54 34 40 10 4 0 0 0 0 0 4 102 7 54 28 40 10 4 0 0 0 0 0 6 10 8 47 28 40 10 4 0 0 0 0 0 6 18 9 47 28 34 10 4 0 0 0 0 0 6 52 54 28 28 10 4 0 0 0 0 0 10 39 11 47 28 22 10 6 0 0 0 22 52 6 22 12 90 34 28 10 6 0 0 0 0 27 6 18 13 83 34 22 6 6 1 0 0 0 44 6 18 14 47 28 28 8 6 1 0 0 0 90 6 22 40 28 34 6 6 0 0 0 0 18 4 28 16 47 28 28 6 6 0 0 0 0 14 6 22 17 40 28 22 6 10 0 0 0 0 14 22 18 18 43 31 22 10 6 0 0 0 0 14 10 22 19 47 34 22 11 10 0 0 0 0 18 6 18 47 34 22 10 6 0 0 0 0 18 6 22 21 47 34 22 10 10 0 0 0 0 18 6 22 22 40 34 22 6 6 0 0 0 0 14 10 22 23 40 34 18 6 10 0 0 0 0 14 10 22 24 47 40 22 6 10 0 0 0 0 18 33 22 47 28 18 6 6 0 0 0 0 10 14 22 26 47 40 22 4 4 0 0 0 0 14 10 18 27 47 40 22 4 4 0 0 0 0 14 10 18 28 54 40 22 4 6 0 0 0 0 14 25 18 29 47 -- 18 6 4 0 0 0 0 14 67 18 40 18 6 1 0 0 0 0 14 14 18 31 40 18 1 0 0 10 18 Total 1,553 931 836 273 174 21 0 0 22 463 341 760 Mean 50.1 33.2 27.0 9.1 5.6 0.1 0 0 0.7 14.9 11.4 24.5 Max 90 40 40 18 10 6 0 0 22 52 67 102 Min 40 28 18 4 1 0 0 0 0 0 4 10 Cfsm In. Ac-ft Year 1966 : Total 5,374 Mean 14.7 Max 102 Min 0 Cfsm In.-- Ac-ft 5 10 15 20 25 30 121 Discharge in thousand gallons per day, calendar year 1967 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 18 18 10 0 0 0 0 0 0 -- -- -- 2 18 18 10 0 0 0 0 0 0 -- -- -- 3 18 14 14 0 0 0 0 0 0 -- -- -- 4 18 14 10 0 0 0 0 0 0 -- -- -- 22 14 6 0 0 0 0 0 0 -- -- -- 6 22 14 4 0 0 0 0 0 0 -- -- -- 7 14 14 4 0 0 0 0 0 0 -- -- -- 8 18 14 4 0 0 0 0 0 0 -- -- -- 9 18 14 4 0 0 0 0 0 0 -- -- -- 22 14 4 0 0 0 0 0 0 -- -- -- 11 22 18 4 0 0 0 0 0 0 -- -- -- 12 22 18 2 0 0 0 0 0 0 -- -- -- 13 18 14 1 0 0 0 0 0 -- -- -- 14 18 14 1 0 0 0 0 0 -- -- -- -- 18 22 1 0 0 0 0 0 -- -- -- 16 18 29 1 0 0 0 0 0 -- -- -- -- 17 22 18 1 0 0 0 0 0 -- -- -- -- 18 22 14 1 0 0 0 0 0 -- -- -- -- 19 22 18 1 0 0 0 0 0 -- -- -- -- 22 18 0 0 0 235 0 0 -- -- -- -- 21 22 18 0 0 0 0 0 0 -- -- -- -- 22 22 18 0 0 0 0 0 0 -- -- -- -- 23 22 14 0 0 0 0 0 0 -- -- -- -- 24 22 14 0 0 0 0 0 0 -- -- -- -- 22 10 0 0 0 0 0 0 -- -- -- -- 26 22 10 0 0 0 0 0 0 -- -- -- -- 27 18 6 0 0 0 Cl 0 0 -- -- -- -- 28 18 6 0 0 0 0 0 0 -- -- -- -- 29 18 -- 0 0 0 0 0 0 -- -- -- -- 18 0 0 0 0 0 0 -- -- -- -- 31 18 0 0 0 0 -- -- Total 614 427 83 0 0 235 0 0 0 -- -- -- Mean 19.8 15.2 2.7 0 0 7.8 0 0 0 -- -- -- Max 22 29 10 0 0 235 0 0 0 -- -- -- Min 14 6 0 0 0 0 0 0 0 -- -- -- Cfsm In. Ac-ft Year 1967 : Total Mean -- mai Min Cfsm -- Ac-ft 122 CHEMICAL ANALYSIS Milligrams per liter Hardness as CaCO3 - ::-.; T., 0 0- Date of collection Discharge (gpm ) i - to Cl) Iron ( Fe ) Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bicarbonate ( H003 ) Ca rbona te ( 003 ) Sulfate ( SO4 ) a) t... 7d 0 Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calcula ted Ca lcium, magnesium Non- carbonate Specific conducta nce (micromhos at 25°C) Hd `5 b' ... t_. 0 coci. a) E-. ec. 20, 1962 in. 15, 1963 eb. 18 fay 28 Jlme 21 70 150 90 111 37 31 38 -- 0.04 .00 .00 -- -- -- 43 39 36 32 18 22 86 65 -- 384 278 318 0 0 0 7.2 12 -- 73 51 62 t.7.4 .3 .1 0.2 .2 .2 -- -- 469 *354 -- -- -- 239 172 180 204 192 0 0 0 -- -- 804 598 669 -- 7.5 26 7.6 26 7.3 26 -- 2'7 -- -- -- - JlAy 26 A ug. 27 A ug. 28 Sept. 23 ct. 17 2,890 318 97 26 30 -- .00 .02 -- -- -- 32 35 -- 28 31 -- 53 63 -- 260 302 0 0 11 14 59 64 .2 .2 1.8 .5 -- -- 339 387 222 195 215 218 228 -- 0 0 -- -- -- 596 667 -- -- -- 27 - 7.4 28 -- 7.8 28 -- -- 28 -- -- 27 - ov. 26 ec. 17 tn. 20, 1964 F ab. 25 far. 23 106 80 97 26 -- -- -- 47 .00 -- 60 44 77 482 -- 3.2 70 .3 .5 -- 539 186 246 244 286 330 -- -- -- -- 0 -- -- -- -- 910 -- 27 -- -- 25 -- -- 30 -- -- 26 -- 7.7 26 -- pr. 20 fay 25 me 22 ily 28 S apt. 24 18 9.4 13.5 16 9.4 47 52 52 58 50 .00 .00 .00 .10 .12 -- -- -- -- -- 56 64 62 62 66 46 39 45 43 40 80 80 72 88 111 476 476 452 480 496 -- -- 12 -- -- 8.8 3.6 2.4 2.8 2.4 72 70 72 90 98 .4 .4 .4 .0 .4 .1 .1 .3 .0 .0 -- -- -- -- -- *554 *548 *540 *609 612 328 320 340 332 329 0 0 0 0 0 915 821 922 907 988 7.9 27 -- 7.9 26 -- 8.3 26 -- 8.0 28 -- 8.2 27 3 S apt. 26 ct. 20 Nov. 18 Dec. 18 in. 15, 1965 -- 18 6 15.7 18 63 60 53 47 48 .00 .00 .00 .00 .00 -- -- -- -- -- 70 68 60 68 66 44 38 41 45 49 75 92 -- 84 77 484 492 -- 504 502 -- -- -- -- -- 2.4 .8 2.0 3.2 .8 85 85 83 85 85 .1 .3 .5 .4 .3 .0 .5 .6 .2 .0 -- -- -- -- -- *597 *584 *550 *585 *563 355 326 318 354 366 0 0 0 0 0 932 965 934 979 981 8.0 28 -- 7.9 26 70 7.9 26 5 8.2 24 5 8.0 24 7 far. 18 Dr. 14 Iv fay 12 JI ine 17 ily 16 13.5 18 9.4 15.7 4.6 47 48 49 49 47 .00 .02 .02 .00 .00 -- -- -- -- -- 20 66 68 68 64 39 44 44 39 40 92 86 95 97 87 314 464 496 484 476 16 10 -- -- -- 2.0 1.6 8.0 8.4 2.0 88 95 100 95 85 .6 .5 .4 .4 .4 .0 .0 .0 .1 .4 -- -- -- -- -- 459 579 *625 595 560 210 345 350 330 324 0 0 0 0 0 782 967 1,010 991 940 8.6 24 5 8.3 25 0 8.1 26 5 8.2 25 5 8.1 27 10 lg. 17 apt. 27 ct. 29 0 Nov. 30 Dec. 20 4.5 9.4 5.8 4.5 25 50 43 46 51 51 .00 .00 .00 .00 .00 -- -- -- -- -- 58 60 62 68 64 39 38 41 43 44 88 84 81 92 95 458 472 480 500 496 8 -- -- -- -- 1.6 2.4 2.4 14 17 74 70 72 85 85 .5 .5 .5 .5 .5 .0 .3 .0 2.0 .9 -- -- -- -- -- 544 *544 *556 *586 *618 305 306 323 346 340 0 0 0 0 0 904 905 918 979 1,000 8.3 26 5 8.0 26 5 8.0 24 5 8.2 24 -- 7.9 26 -- Ji in. 18, 1966 F ab. 18 lar. 17 lay 11 ct. 11 23 16 5.8 4.5 13.5 49 49 50 50 20 .00 0.00 .00 .00 .01 .00 .01 .00 .26 .00 58 58 54 56 32 49 43 40 46 21 83 87 80 74 47 482 482 436 458 140 -- 4 -- -- 18 16 15 12 35 80 70 66 72 76 .3 .3 .4 .4 .3 .0 .1 .1 .2 13 -- -- -- -- -- 574 560 *536 *555 *362 346 322 299 328 166 0 0 0 0 51 942 918 867 898 572 8.2 25 10 7.9 25 5 8.3 -- 5 8.0 26 10 7.2 -- 70 Nov. 9 ec. 7 In. 4, 1967 ab. 7 ar. 10 4.5 9.4 11.2 9.4 4.5 44 45 46 45 20 .00 .03 .00 .00 .00 .00 .00 .01 .00 .00 73 72 70 66 74 46 41 60 45 28 103 107 76 105 122 524 514 508 508 502 14 11 14 13 10 106 104 110 104 100 .3 .4 .4 .4 .4 .4 .3 .4 .6 .3 -- -- -- -- -- 645 634 *625 *629 602 371 348 421 350 300 0 0 5 0 0 1,090 1,070 1,070 1,060 1,040 7.8 26 15 7.4 -- 10 8.0 24 -- 8.0 -- -- 8.0 24 -- * Residue on evaporation at 180°C. . 123 3323. River Cut at Holy Cross Church, St. Croix, V.I. Location.--Lat 17° 44' 05", long 64c 48' 23", 0.8 mile southeast of bridge at River. Drainage area.--1.95 sq mi. Records available.--Discharge: Monthly measurements, 1962-69. Chemical analyses: 1963-66. Remarks.--Flow 41 gpm on Mar. 28, 1962; 12 observations of no flow between Apr. 20, 1964 and June 15, 1965; 3 observations of no flow between Aug. 18 and Oct. 29, 1965. Unmeasured flow Apr. 14, 1966; 33 observations of no flow between May 11, 1966 and May 7, 1969. Unmeasured flow June 6 and July 22, 1969. CHEMICAL ANALYSIS Hardness as CaCO3 Ca lcium, mag nesium Non- ca rbonate 1 Specific conductance (micromhos at 25°C ) Milligrams per liter Date of collection Discha rge (gpm ) XQ. Temperature ( 'C I Color Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K ) Bica rbonate (HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) Chloride ( C1) Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calcula ted Manganese ( Mn ) 70 U - in w- _ E ro ao L. o • 7i;U 7.. cn viar. 28,1962 goy. 27 an. 15, 1963 'eb. 18 1ar. 26 41 41 188 34 32 -- -- 33 36 -- -- 0.02 .00 -- - - -- -- S5 57 -- -- -- 27 25 -- -- -- 123 146 -- -- -- 404 446 -- -- -- 0 0 -- -- -- 25 19 -- -- -- 112 125 -- -- -- 0.4 .2 -- -- -- 0.1 .2 -- -- -- -- -- -- -- -- *607 628 -- -- -- 248 245 -- 0 0 -- 1,000 1,040 -- -- 8.0 24 8.0 24 -- -- 1pr. 23 Nay 28 une 21 uly 26 lug. 28 19 111 135 28 742 -- -- -- -- 25 -- .04 -- -- 56 -- 28 -- 129 -- 264 -- 0 -- 87 -- 158 -- .2 -- 4.6 -- -- -- -- -- 618 -- 188 290 254 -- 38 -- -- 1,060 -- 25 -- 26 7.726 -- --- ;opt. 23 Dct. 16 Nov. 26 Dec. 18 fan. 20, 1964 155 97 80 61 69 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 354 120 120 120 130 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 286 246 108 310 320 Feb. 25 Mar. 23 Apr. 20 May25 fuly 28 5.8 1.1 0 0 -- 34 -- -- -- .00 -- 112 -- -- -- 74 -- -- 263 -- -- -- 616 -- -- -- 0 -- -- -- 130 -- -- -- 365 -- -- -- .3 -- -- -- -- -- -- -- -- -- -- 1,340 -- -- -- 402 584 -- -- -- -- 79 -- -- -- -- -- 24 2,180 7.9 23 -- -- -- -- -- -- -- -- -- -- -- -- -- -- Nov. 18 (i -- -- -- -- -- -- -- -- -- -- - - -- -- -- -- -- -- -- -- Ian. 14, 1965 Feb. 16 May 12 0 () 0 - - -- -- - - -- - - -- -- -- -- - - -- -- - - -- -- - - -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- June 15 July 15 Nov. 30 Dec. 21 Jan. 18, 1966 0 1 4.5 31 13.5 -- 28 31 29 30 -- .00 .02 .00 .00 -- -- -- -- -- 116 116 80 72 -- 78 76 48 76 -- 392 409 171 311 -- 728 710 482 610 -- 0 0 0 0 -- 220 268 98 164 -- 450 445 192 352 -- .6 .6 .5 .4 -- .1 .5 .3 .0 -- -- -- -- -- -- 1,640 *1,720 *865 *1,350 -- 610 602 397 492 -- 13 20 2 0 -- -- -- 2,690 8.2 26 2,740 8.0 23 1,440 7.9 24 2,210 8.0 24 -- 11 -- -- 12 Feb. 18 Mar. 17 11.2 3,2 32 34 .00 .01 -- -- 90 64 77 79 340 316 754 668 0 0 154 148 356 332 .5 .6 .1 .1 -- -- *1,440 * 1,310 541 484 0 0 2,400 8.0 24 2,160 8.1 -- -- if i * Residue on evaporation at 180'C. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 124 3330. River Gut at Golden Grove, St. Croix, V. I. long 64° 48' 16", 1,600 ft south of Centerline Road. 4,7 00 ft north of runway at Location. --Lat 17° 42' 59", Alexander Hamilton Airport, 5.0 miles east of Ft. Frederick, Frederiksted. Drainage area.--5.14 sq mi. Records available. --Discharge : January 1963 to December 1969. Chemical analyses: 1962-64. Gage.--Water-stage recorder and flume in concrete control. Altitude of gage is 50 ft (from topographic map). Extremes.--Maximums and minimums (discharge in gallons per minute, gage-height in feet). • Annual maximum discharge for years 1963-69 Annual minimum discharge for years 1963-69 Date Time Discharge Gage height Year Date Discharge Gage height 10 1.60 May 18, 1963 1100 211,000 9.03 1963 Oct. 25, 26 Jan. 23, 1964 2200 131 1.82 1964 -- 0 -- May 24, 1965 2200 6,860 2.62 1965 -- 0 -- 1966 -- 0 -- 1966 -- 0 --_ Oct. 31, 1967 1600 7,700 2.67 1967 -- 0 Dec. 14, 1968 1400 88 2.62 1968 -- 0 -- May 23, 1969 -- 330,000 11 ( from 1969 -- 0 -- floodmark) 1963-1969: Maximum discharge, 330,000 gpm May 23, 1969 (gage height 11 ft from floodmark); No flow many days in 1964-69. Remarks.--Records poor. Flume installed and concrete control changed June 1968. No flow 1966. Discharge in thousand gallons per day, calendar year 1963 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 410 170 140 60 410 410 17,700 500 350 60 130 60 2 40 380 170 170 60 410 350 9,660 470 470 9,330 120 410 260 1,160 440 320 3,640 100 3 49,500 380 140 170 40 60 380 260 600 470 230 770 80 4 62,200 380 140 200 5 16,900 350 140 260 60 320 200 470 350 170 500 60 350 110 170 60 320 260 350 1,650 140 380 50 6 6,370 110 320 50 7 720 350 110 1,320 60 290 560 350 640 8 720 350 110 1,680 60 260 530 470 410 110 260 50 350 380 260 80 1,070 60 9 680 320 80 720 60 230 10 680 320 80 560 80 200 290 350 260 80 470 60 260 350 260 60 260 60 11 640 320 80 380 80 170 12 640 320 60 290 80 170 230 380 290 80 170 70 290 60 230 200 170 2,040 410 320 110 110 70 13 600 14 600 290 60 170 110 170 2,230 470 350 140 110 60 15 560 290 40 140 80 170 680 470 380 320 80 50 16 560 380 40 110 140 170 470 470 380 290 80 50 17 560 350 40 140 2,570 140 410 470 440 200 25 50 18 530 290 40 170 78,500 170 350 470 410 200 110 50 80 SO 19 530 260 40 110 16,000 1,240 320 440 380 230 20 500 260 40 110 6,000 870 290 350 350 170 80 60 21 500 260 40 110 1,000 440 260 290 320 110 970 60 40 110 700 440 260 230 260 60 140 50 22 500 230 23 470 230 40 80 600 320 260 170 290 60 170 50 600 290 260 110 320 40 140 50 24 470 230 40 60 80 600 260 230 110 290 25 200 50 25 470 200 60 350 25 170 45 440 200 80 40 500 410 200 60 27 440 200 80 40 500 410 170 5,620 470 170 190 40 26 380 170 190 40 28 410 170 80 40 470 2,170 260 3,970 29 410 -- 80 40 440 1,160 200 970 290 110 150 30 30 410 80 80 410 560 170 30 600 260 80 140 30 470 80 31 380 110 410 170 2,480 7,920 110,590 13,140 13,190 48,370 12,240 4,790 20,365 1,805 Total 148,490 8,360 58 4,790 298 80 264 3,570 438 425 1,560 408 154 679 Mean 130 62,200 410 170 1,680 78,500 2,170 2,230 17,700 1,650 470 9,330 Max 25 25 30 170 40 40 40 140 170 60 260 Min 380 Cfsm -- -- -- -- -- _- In. -- -- -- -- __ Ac-ft -- -- -- -- Year 1963 . Total 391,740 Mean 1,060 Max 78,500 min 25 Cfsm In. 5 10 15 20 25 30 125 Discharge in thousand gallons per day, calendar year 1964 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 3 4 40 35 35 40 50 50 50 45 45 45 30 30 30 25 25 25 25 25 25 25 25 25 25 25 25 15 10 10 10 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 7 8 9 90 90 80 80 100 45 40 40 35 35 25 25 25 25 30 25 25 25 25 25 25 25 25 25 25 5 5 5 5 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 12 13 14 80 70 100 100 100 35 45 45 40 40 30 30 30 30 30 25 30 30 30 30 25 25 25 25 25 5 5 5 5 5 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16 17 18 19 90 80 70 60 50 35 40 40 40 40 30 30 30 30 30 30 30 30 30 35 25 25 25 25 25 5 5 5 5 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21 22 23 24 50 50 110 130 90 35 35 35 35 35 30 30 30 30 30 30 30 30 30 30 25 25 25 25 25 5 5 5 5 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 26 27 28 29 31 60 50 50 50 50 50 30 30 30 30 30 30 25 25 25 25 30 30 30 30 30 25 25 25 20 20 15 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Total Mean Max Min 2,180 70 130 35 1,125 39 SO 30 880 28 30 25 850 28 35 25 755 24 25 15 150 5 15 0 3 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- -- -- -- -- Year 1964 : Total 5,943 Mean 16 Max 130 Min 0 Cfsm ..- In. Ac-ft -- -- -- -- -- -- -- __ __ -- -- -- -- -- -- -- 1 2 E.; Discharge in thousand gallons per day, calendar year 1965 Aug. Sept. Oct. Nov. Dec. Day Jan. Feb. Mar Apr. May June July 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2,640 0 0 0 0 0 0 0 0 0 0 0 401 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1,030 0 0 0 0 0 0 0 0 0 0 0 155 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 904 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1,630 0 0 0 0 0 0 0 0 0 0 0 6,770 0 0 0 0 0 0 0 0 0 0 0 675 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Total 0 0 0 0 11,171 0 0 0 0 0 0 3,041 Mean 0 0 0 0 360 0 0 0 0 0 0 98 Max 0 0 0 0 6,766 0 0 0 0 0 0 2,644 Min 0 0 0 0 0 0 0 0 0 0 0 0 Cfsm -- -- -- -- -- -- In. -- -- __ __ __ -- -- -- -- -- Ac-ft -- -- -- -- -- Year 1965 : Total 14,212 an 39 Max 6,766 Min 0 Cfsm - - In . ri IDCTCo t: CA F-' 8D3 Q Si D3:F, C l N N a?C ; Eil .,. ',_7;NF-' 8,0 op .,cr, u,p6 <A .H 5 10 15 20 25 30 liiscnar.je Ln ihousand gallons per day, calendar year 196-/ Day Jan. Fete. M:d• i'tpr • !day June, July Aug. Sept. Oct. Nov. 1),c. 1 2 3 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 U 0 6 7 8 9 U 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 U U 0 0 0 0 0 0 11 12 13 14 0 i , U U 0 0 0 0 0 0 0 (1 0 0 0 0 0 0 U 0 0 0 0 0 () 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16 17 18 19 0 0 0 0 u 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 U 0 0 U 0 0 0 0 0 0 0 21 22 23 24 l' 0 U 0 0 0 U 0 0 0 0 0 0 0 0 U U 0 0 0 U 0 0 0 0 U 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 26 27 28 29 31 0 0 0 0 0 U 0 0 o 0 0 0 U 0 0 0 0 0 U 0 0 0 U 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 U 0 0 l) 0 0 0 0 0 0 0 0 0 0 0 911 0 0 0 0 0 0 0 0 0 0 0 Total Mean Max Min Clam In. Ac-ft 0 0 0 0 - - - .. -- 0 0 0 0 -- __ -- 0 0 0 0 -- ___ -- 0 0 0 0 -- -- -- 0 0 0 0 -- __ -- 0 0 0 11 -- -- - 0 0 0 0 -- -- -- 0 0 0 0 -- -- -- 0 0 0 0 -- -- -- 911 2 9 911 0 -- -- -- 0 0 0 0 -- -- -- 0 0 0 0 -- __ -- Year 1967 : Total 911 Mean 3 Max 911 Min 0 Cfsm -- 5 10 15 20 25 30 128 Discharge in thousand gallons per day, calendar year 1968 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0 0 0 0 0 0 0 0 0 0 0 0 7 0 0 0 0 0 0 0 0 0 0 0 0 8 0 0 0 0 0 0 0 0 0 0 0 0 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 0 0 0 0 12 0 0 0 0 0 0 0 0 0 0 0 0 13 0 0 0 0 0 0 0 0 0 0 0 0 14 0 0 0 0 0 0 0 0 0 0 0 17 0 0 0 0 0 0 0 0 0 0 0 15 16 0 0 0 0 0 0 0 0 0 0 0 0 17 0 0 0 0 0 0 0 0 0 0 0 0 18 0 0 0 0 0 0 0 0 0 0 0 0 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21 0 0 0 0 0 0 0 0 0 0 0 0 22 0 0 0 0 0 0 0 0 0 0 0 0 23 0 0 0 0 0 0 0 0 0 0 0 0 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 26 0 0 0 0 0 0 0 0 0 0 0 0 27 0 0 0 0 0 0 0 0 0 0 0 4 28 0 0 0 0 0 0 0 0 0 0 0 32 29 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 31 0 0 0 0 0 0 0 Total 0 0 0 0 0 0 0 0 1) 0 0 68 Mean 0 0 0 0 0 0 0 0 0 0 0 2 Max 0 0 0 0 0 0 0 0 0 0 0 32 Min 0 0 0 0 0 0 0 0 0 0 0 0 Cfsm-- -- -- -- -- -- -- -- -- -- -- - - In. -- -- -- -- __ -- -- -- -- -- -- - - Ac- ft -- -- -- -- -- -- -- -- -- -- -- -- Year 968 : Total 68 Mean ,2 Max 32 Min 0 Cfsm In. Ac-ft 5 10 15 20 25 30 129 Discharge in thousand gallons per day, calendar year 1969 Day Jan. Feb. Mar Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 3 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 () 0 0 0 9,940 0 0 0 0 0 () 0 0 0 0 1) 0 0 0 0 0 0 0 0 0 0 5 0 0 0 1,110 750 650 600 600 850 880 9,200 1,880 1,110 6 7 8 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 35,900 174 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20 6,000 3,500 1.500 350 550 550 550 650 900 800 750 750 700 11 1? 13 14 0 0 U 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Pi" 0 0 0 0 0 0 0 0 0 260 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1,000 1,500 1,200 1,000 900 3,31u 1,270 800 700 650 7i0 7)0 650 650 650 16 17 18 19 0 0 0 0 0 (1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10,700 23,700 140 104 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22 0 800 700 650 5,630 2,720 650 600 650 600 600 600 600 550 550 600 21 22 23 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 45,800 2,990 29,300 69,600 1,380 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 27 1 10 0 0 1,190 950 800 13,600 1,620 650 71,000 27,000 3,230 1,750 600 3,000 1,000 700 600 26 27 28 29 31 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 127 80 50 30 20 10 0 36 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 850 750 650 650 5,470 3,840 1,510 1,270 1,430 1,190 950 600 600 550 550 550 550 Total Mean Max Min 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 229,801 7,410 69,600 0 574 19 260 U 0 0 0 0 0 0 0 0 60 2 27 0 57,495 1,850 13,600 0 126,370 4,210 71,000 550 -- 33,420 1,080 9,200 550 -- In. -- __ __ __ -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- Year 1 969 : Total 447,720 Mean 1,230 Max 71,000 Min 0 Cfsm -- Ac-ft -- 130 CHEMICAL ANALYSIS Milligrams per liter Hardness as CaCO3 6 --- _ . . _ . . Specific conducta nce (micromhos at 25°C Temperature ( °C) Footnote Nitrate ( NO3) Orthophosphate ( PO4 ) Dissolved solids calculated Ca lcium, magnesium Date of lle co ction ) Discha rge (gpm Silica ( SiO2 ) 0 Manganese ( Mn ) 1 Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K ) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) t T.: 0 Z C 00 0 z -e, 7E' U p.. m0 lec. 20,1962 3n. 15, 1963 eb. 18 1ay 28 Ine 21 75 406 251 326 210 40 35 38 -- -- 0.00 .00 .02 -- - - - 61 65 62 -- -- 36 30 28 -- -- 331 212 225 -- -- 632 496 550 -- -- 0 0 0 60 56 49 -- 210 198 182 185 190 0.7 .4 .4 -- 1.0 .8 ' .2 -- -- -- -- -- 1,050 * 869 856 -- -- 300 289 270 194 269 0 0 0 1,650 1,440 1,400 -- 7.9 24-- 7.9 23 -- 7.9 24 -- - 25 -- ily 26 ug. 27 ug. 28 ept. 23 >ct. 16 125 8,050 2,500 258 177 -- 22 27 -- -- -- .04 .04 -- - -- -- 46 59 -- -- -- 16 28 -- -- -- 54 104 -- -- -- 184 296 -- -- 0 0 -- 43 69 -- 200 64 119 -- 150 .3 .2 -- 15 4.8 -- -- -- -- -- -- -- * 365 557 -- -- 274 181 262 318 272 -- 30 19 -- -- 603 952 -- -- -- 26 -- 7.3 25 -- 8.0 26 -- -- 27 -- - 26 -- lov. 26 )ec. 17 3n. 20,1964 eb. 25 4ar. 24 130 37 39 20 20 -- -- -- -- 38 -- .00 - -- -- -- -- 46 -- -- -- -- 52 -- -- -- -- 300 -- -- -- -- 744 0 -- 63 260 250 230 240 215 .7 -- 1.1 -- -- -- -- -- -- -- -- -- 1,140 200 342 326 296 329 0 -- -- -- 1,830 - 24 -- - 26 -- - 23 -- 8.1 24 -- pr. 20 1ay 25 ane 22 16 11 2.6 8.6 43 43 .02 .00 .00 -- -- -- 42 54 36 46 48 51 285 290 310 648 750 748 0 0 0 73 50 54 215 208 215 .8 .8 1.0 .5 .1 .3 -- -- -- 1,020 1,100 1,100 294 332 300 0 0 0 1,680 1,810 1,770 8.1 25 -- 8.2 24 -- 8.0 26 -- * Residue on evaporation at 180°C. 131 3339. Bethlehem Gut at Colquhoun, St. Croix, V.I. Location.--Lat 17° 44' 28", long 64° 48' 55", at Colquhoun bridge, Estate Colquhoun, 1 mile west of community of Friedensfeld. Drainage area.--0.98 sq mi. Records available.--Discharge: Monthly measurements, 1963-69. Chemical analyses: 1962-66. Remarks.--No flow Dec. 20, 1962; Jan. 15, 1963--73 gpm; Feb. 18, 1963--11 gpm; no flow Mar. 26, 1963; Apr. 23, 1963--11 gpm; 21 observations of no flow between Dec. 18, 1963 and Feb. 16, 1965; 5 observations of no flow between June 15, 1965 and Oct. 29, 1965; 35 observations of no flow between Feb. 18, 1966 and Mar. 21, 1969; unmeasured flow May 7, 1969. CHEMICAL ANALYSIS Milligrams per liter Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conducta nce (micromhos at 25°C) I He. Temperature ( °C) I Color Date of collection Discha rge (gpm ) 6 iii — do o g Ma nganese ( Mn ) Calcium ( Ca ) w c0, Sodium ( Na Pota ssium ( K) Bicarbonate ( HCO3 ) Ca rbonate ( CO3 ) Sulfate ( SO4 ) Chloride ( Cl) Fluoride ( F) Nitrate ( NO3 ) Orthophosphate ( PO4 ) Dissolved solids calculated lay 28, 1963 40 -- Ily 26 7.6 -- -- 103 315 0.4 0.5 -- -- 380 0 1,860 7.9 26 -- ug. 28 219 30 0.04 -- 85 41 266 496 -- -- 336 -- -- -- 27 -- ept. 23 26 -- -- )ct. 16 5.8 -- -- 180 -- -- -- 24 — Iov. 27 14 -- -- 448 0 130 188 .4 2.0 *934 455 88 1,450 7.7 26 15 /lay 12,1965 13.5 43 .02 -- 90 56 145 2.9 781 483 112 1,270 7.9 23 -- 1ov. 30 11 39 .00 -- 98 58 99 452 0 101 155 .3 396 0 52 108 .4 4.1 608 314 0 981 8.1 24 -- )ec. 21 34 52 .00 -- 60 40 102 754 394 0 1,200 8.2 23 17 484 0 61 132 .2 .9 an. 18, 1966 9.4 49 .00 -- 52 52 117 * Residue on evaporation at 180°C. 132 3345. Bethlehem Gut at Upper Bethlehem, St. Croix, V.I. Location.--Lat 17° 42' 34", long 64° 47' 16", about 50 feet downstream of bridge over stream, 1 mile east of terminal building at Alexander Hamilton Airport. Drainage area.--4.11 sq mi. Records available.--Discharge: Monthly measurements 1963-69. Chemical analyses: 1963-65. Remarks. --No flow Dec. 18 and Jan. 20, 1964; also 10 observations of no flow between May 25, 1964 and Feb. 16, 1965; 11 observations of no flow between June 15, 1965 and Apr. 14, 1966; unmeasured flow May 11, 1966; 31 observations of no flow between June 9, 1966 and June 6, 1969. CHEMICAL ANALYSIS Milligrams per liter Date of collection Discharge (gpm ) 6 — ...... — ,o c o 2 :..... Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Potassium ( K) Bicarbonate ( HCO3 ) Carbonate ( CO3 ) Sulfate ( SO4 ) Chloride ( C1) Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calculated Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conducta nce (micromhos at 25°C) Temperature ( °C ) I Color 3n . 15, 1963 eb. 18 Car. 26 pr. 23 4ay 28 200 47 74 57 85 32 48 -- -- -- 0.02 .74 -- - - 96 98 -- -- -- 5.0 28 -- -- -- 397 414 -- -- -- 572 804 -- -- -- 0 0 84 13 -- -- - 400 415 -- -- 435 0.6 .6 -- -- -- 0.7 1.2 -- -- -- -- -- -- -- -- 1,350 1,560 -- -- -- 260 360 780 0 0 -- 2,250 2,470 -- 8.0 24 -- 7.6 24 -- -- 27 -- uly 25 ug. 27 ug. 28 ept. 23 )ct. 16 34 12,450 4,900 110 8 -- -- 17 -- -- -- .02 -- - -- -- 59 -- -- -- -- 26 -- -- -- -- -- -- -- -- -- 230 -- -- 0 -- 380 -- 185 390 440 -- .0 -- -- -- .9 -- -- -- -- -- -- -- __ -- -- 372 254 410 278 -- 65 -- -- -- 1,100 -- -- - 27 -- 7.5 27 -- -- 28 -- - 28 -- Foy. 27 eb. 25, 1964 lar. 24 pr. 21 lay 12, 1965 18 26 14 142 9.4 -- -- 75 56 48 -- 24 32 .54 -- -- -- 350 274 244 83 79 60 17 15 356 672 356 1,270 0 0 0 18 118 50 475 438 375 1.0 1.0 .7 11 9.1 1.8 -- -- -- -- 434 -- *3,840 1,220 *3,490 1,010 1,840 856 -- 664 716 0 -- 3,900 3,270 2,830 - 25 -- 4.8 24 -- 4.7 24 -- 7.7 27 70 * Residue on evaporatio;) at 180°C. 133 3350. River Gut at Alexander Hamilton Airport, St. Croix, V.I. Location.--Lat 17° 42' 31", long 64° 47' 15", 300 ft upstream of bridge on former airport road, 0.2 mile upstream of eastern end of airport runway. Drainage area.--6.90 sq mi. Records available.--Discharge: Monthly measurements 1962-69. Chemical analyses: 1962-66. Remarks.--No flow Jan. 20, 1964; also 10 observations of no flow between May 25, 1964 and Jan. 14, 1965; 10 obser- vations of no flow between July 15, 1965 and Apr. 14, 1966; 32 observations of no flow between June 9, 1966 and Mar. 21, 1969; unmeasured flow observed May 7, 1969; no flow on June 6 and July 22, 1969. CHEMICAL ANALYSIS Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conductance (micromhos at 25°C) Hd pemperature ( °C) I Milligrams per liter Date of collection Discharge (gpm ) !., 61 Ma nganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na 1 Pota ssium ( K ) Bicarbonate (HCO3 ) Ca rbonate ( CO3 ) Sulfate ( SO4 ) Fluoride ( F ) Nitra te ( NO3 ) LOrthophospha te ( PO4 ) Dissolved solids calculated :---; - O' 0 -0 . . 4 0 ,lov. 2/,1962 )ec. 20 an. 15, 1963 'eb. 18 Aar. 26 20 26 525 76 56 -- 29 33 40 -- -- 0.00 .02 .42 -- - - - -- 70 75 87 -- -- 34 30 26 -- -- 444 291 407 -- -- 772 572 780 -- -- 0 0 0 -- -- 91 77 41 -- -- 390 278 372 -- -- 0.7 .6 .6 -- 0.5 .6 .7 -- -- -- -- -- -- -- 1,440 *1,120 1,360 314 310 324 0 0 0 2,460 1,850 2,290 8.0 24 -- 8.0 23 -- 7.8 26 -- qr . 23 ilay 28 uly 25 wg. 28 >ept. 23 76 319 61 8,120 342 -- -- -- 20 -- -- .06 -- -- -- 57 -- 31 -- -- -- 260 -- 0 -- -- -- 168 .0 -- -- -- 2.8 -- -- -- -- -- -- -- -- 284 320 270 -- -- 57 -- -- 1,080 - 27 -- -- 27 -- 8.0 27 -- )ct. 16 qov. 26 )ec. 18 an. 20,1964 'eb. 26 117 80 18 0 47 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 340 370 -- 440 -- -- -- -- -- -- -- -- -- -- -- -- -- 244 340 -- -- -- -- -- -- -- -- -- - 28 -- - 26 -- - -- -- - 23 -- Aar. 24 \pr. 20 Aay 12, 1965 vlay 11, 1966 16 111 5.8 54 82 61 45 61 23 -- 334 39 -- 324 .02 -- 208 .500.01 212 89 83 54 88 110 55 417 629 760 624 1,150 1,600 0 0 0 0 28 108 132 36 550 450 400 645 1.4 1.0 .6 .8 10 12 .1 2.5 -- -- -- -- 4,020 1,200 3,920 1,150 1,790 741 2,540 891 577 638 0 0 4,090 3,620 2,900 4,010 4.9 24 -- 4.8 25 -- 8.0 27 5 7.7 26 70 * Residue on evaporation at 180°C. - - 13-i 3360. Envy Spring at Alexanclet Hamilton !. trport, St. Croix, V.!. Location.--Lat 17° 41' 47", long 64' 48' 04", 2,300 ft south of runway, 5.6 miles southeast of l'ort Frederick, rrederiksted. Drainage area .--Unknown. Records available.--Discharge: Monthly measurements, 1963-66. Chemical analyses: 1962-65. Remarks.--q observations of no flow between Apr. 20 and June 22, 1964. No flow Mar. 18 and Apr. 14, 1965. 7 observations of no flow between June 16, 1965 and Jan. 19, 1966. CHEMICAL ANALYSIS Color 1 Specific conducta nce (microm hos at 25 °C ) Milligrams per liter a Hardness ^ - Date of collection Discha rge (gpm ) - cn 2 - __, B P4 as CaCO3 ,ni, a., -6 2 - 2 v 0 0 ...... ,c - ffo' - - L)- - 'Z - r 23 - Hd n'' 2 7, - cr) 0 ioa - .7' 0 -r c 3 0 B B E - E rd ';'0 E o ro a)a 1 a "I - E E -0 v ci, •c 0 > rn «'-!)a, ,1 " -0 0 '-i,;_ •-• .2 Ti,' 0 a) -~ a, an. - „ , ro ...., 'J,' X .6,-, - •-• co .2-4 c 0 o 0 u - , ^,c., ( co o - c 8 . ./...e '8 zi ,, , Ea) ,... o -5 :-. ri, ft)0 t ..t: ' ci ,I, ro El 0 , . ro F „„ cr) cn 0 cn Z- 4 0 1-i a. 7: eb. 19, 1963 4ay 28 aly 25 ug. 27 ept. 23 41 16 20 40 16 42 -- -- 36 -- 0.00 -- -- .08 -- - - 40 36 24 41 461 -- 690 658 0 16 108 362 360 0.9 .6 12 -- 8.0 -- -- -- -- 1, 390 -- -- -- -- 198 188 210 258 238 0 0 2,310 2,260 8.0 26 -- 8.4 27 -- )ct. 16 lov. 26 )ec. 18 an. 20, 1964 'el). 24 20 7.6 11 16 3.2 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 350 380 360 350 340 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 142 228 240 240 238 -- -- -- -- - - - - - 28 -- 24 -- 27 -- 78 -- 28 -- Aar. 23 uly 28 'lig. 26 ;apt. 24 )ct. 20 2 4.5 15.7 34.1 18 39 42 44 4U 40 .04 .05 .05 .00 .00 -- -- -- -- -- 38 42 46 26 24 38 40 55 32 40 434 413 546 433 414 696 688 680 592 584 0 -- -- 22 16 112 96 132 98 94 :352 350 585 360 350 1.0 .7 .6 1.0 .8 11 8.4 9.2 4.5 9.9 -- -- -- -- 1,420 1,34o 1,830 1,370 1, 320 251 270 341 196 221 0 0 0 0 0 2,290 2,250 3,000 2,220 2,190 7.9 26 -- 0.1 II - 7.9 28 - 8 . i 18 8.4 28 2 , boy. 18 )ec. 16 an. 14,1965 'eb. 16 4ay 13 7.6 7.6 5.8 1 7.6 46 36 38 37 39 .00 .02 .00 .00 .02 -- -- -- -- -- 38 42 42 46 40 48 41 43 60 38 -- 431 420 611 -- 908 686 704 638 688 -- 12 -- 16 -- -- 106 89 150 -- 365 368 368 692 372 1.1 1.1 1.0 1.1 1.0 10 9.4 5.1 6.3 3.2 -- -- -- 1,430 1,450 1,390 1,960 1,420 260 286 282 362 256 0 0 0 0 0 2,350 2,350 2,330 3,75o 2,340 1!.1 2.8 1' 8.3 z4 1'1' 8.2 1.3 i- 8.1 16 8.1 23 '.., * Residue on evaporation at 180'C. 135 34'111. Jolly Hill (;ut at Jolly Hill, St. Location.--Lat 17 44' 00", long 64' 51' 47", 0.5 mile north of Fort Frederick, Froderiksted. Drainage area.--2.10 sq mi. Records available.--Discharge: 1963-6l:, Station discont:, Monthly measurements, 1962, 69. Chemical analyses: 1962-67. Gage.--Water-stage recorder and U-notch concrete control. Extremes.--Maximums and minimums (discharge in gallons per minute, gage height in feet). Annual maximum discharges for years 1963-68 Annual minimum discharges 1963-68 Date Time Discharge Gage height Date Time Discharge Gage height Jan. 4, 1963 1000 90,000 3.04 1963 -- (No -- Jan. 20, 1964 -- 8 .44 1964 -- flow -- Dec. 12, 1965 1600 100,00(1 3.15 1965 -- many -- Oct. 14, 1966 0500 13,000 2.40 1966 -- days -- Nov. 20, 1967 120(1 1,000 1.13 1967 -- each -- • 1969 196371968: Maximum discharge, 100,000 gpm Dec. 12, 1965 (gage height 3.15 ft); minimum, no flow many days each year. Remark:;.--Discharge records poor. No flow during 1968. CHEMICAL ANALYSIS C. Temperature ( CC) I Color Dissolved solids ca lcula ted Hardness as CaCO3 Ca lcium, magnesium Non- ca rbonate Specific conducta nce (microm hos at 25°C) Milligrams per liter - c , Chloride ( CI) Fluoride ( F 1 ro , v. O ..._: dr m S ,T. .c Carbona te ( CO3' '- O - % Ci• ---- e ,r 0 S "a e. t.. CI) ,. 0 0 !, i tl, -e. o nz' :1: • -8 .2 0 2 -- cu 2 0 U) •yl .n(3, c: Y *--. In .-‘ y V) 0 cn :7) a. Dec. 21, 1962 Feb. 18, 1963 May 29 June 20 July 25 Aug. 27 Sept. 24 Oct. 16 Nov. 26 Dec. 18 Jan. 20, 1961 Feb. 25 Dec. 21, 1965 Ian. 19, 1966 Fut). 23 Mar. 17 May 11 Dec. 7 Jan. 4, 19(.7 2.5 26 31 20 18 13.5 11 9.4 14.5 5.8 9.4 e 3 11 .2 20.2 1,1.6 • . 107 109 -- -- 27 15 -- -- -- 93 101 -- 508 174 -- -- 0 0 -- -- 8.4 8.4 -- -- 108 110 115 120 0.5 .3 -- -- 0.1 .1 -- -- -- -- -- *624 605 -- -- -- 378 334 166 370 354 0 0 -- -- -- 1,070 7.5 23 4 1,000 7.4 25 -- -- -- 24 -- -- -- 26 -- 89 ' -- 26 -- - -- -- 372 12 -- -- -- 100 110 110 . -- -- -- -- -- -- -- 329 388 130 276 404 4 -- -- -- -- 852 8.4 26 -- -- -- 26 -- -- -- 25 -- -- -- 23 -- 0.00 .1111 __ 124 100 90 • 39 37 (-1 -- __ 66 61 t,.1 -- _ 422 .00 .356 -- -- -- -- -- 53 28 20 120 120 148 142 135 .5 .3 .3 -- -- :3.6 1.7 .0 -- -- -- -- -- -- -- 679 636 S82 400 394 470 4(12 364 -- -- 124 99 72 -- -- 24 -- -- -- 23 -- 1,150 8.1 24 -- 1,040 7.6 23 10 979 7.7 24 5 .30 .0t .11) I 11:, 120 116 114 16 •12 11 46 1/ 11 :01 /•1 64 it, 2/0 1/ 0 4 3 16 4/2 -,71, -- 22 19 31 25 18 132 129 126 145 134 .3 .4 .3 .3 .1 3.5 . -- -- -- -- 505 660 715 683 777 328 460 460 478 511 107 75 53 91 44 848 8.0 -- 5 1,090 7.8 26 5 1,170 7.7 -- 10 1,160 7.9 23 -- 1,250 8.0 -- -- 28 28 22 22 26 1.00 .0 0 .02 . ▪ 011 .0t1 .0 1 0 , • t I .11 4 Pc51911eullr,11; 5 10 15 20 25 30 -- 1 136 Discharge in thousand gallons per day, calendar year 1963 Day Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. , ,- r•-• •-•I-. ..r::. I-, l•-• 1-•I-0 1.-. ..... I-. 1,-- ..... I--. r, 0 0 F.... 0 t. , ', 1. CCCOts) cy, a, N., a, cr, is.) ts.) co a) cc cc iv 1,-) (,) tv a,co ... .t. .D. ry .--. NJ 1 26 26 1 1 50 32 2 0 21 26 1 1 38 32 3 580 21 26 2 1 38 26 4 5,640 26 38 4 0 44 16 102 32 32 2 0 50 16 6 44 32 26 4 0 50 32 7 38 32 21 12 0 38 57 8 38 32 16 1 1 38 50 9 32 32 16 1 1 38 32 38 32 16 1 1 44 32 11 38 32 21 1 1 44 32 12 44 32 26 1 1 38 32 13 38 32 26 1 1 32 38 14 26 32 26 1 1 32 21 38 32 12 1 1 21 21 16 57 21 8 21 44 16 8 21 32 21 8 21 32 21 8 16 26 16 8 26 21 16 8 21 21 16 8 26 26 21 8 16 26 21 8 16 26 12 8 16 21 8 16 16 21 21 21 16 21 12 21 12 12 12 12 16 21 12 8 26 21 12 12 21 12 12 12 16 21 8 12 32 32 12 1 1 21 26 16 32 32 12 2 200 21 26 17 32 32 12 1 4,000 26 21 18 26 26 16 1 100 65 21 4 4 16 12 19 21 21 12 1 44 16 16 21 26 21 12 1 38 16 16 22 16 21 16 1 38 21 8 23 16 16 16 1 32 32 8 24 16 16 16 1 38 38 8 21 21 16 1 44 38 2 16 8 12 4 16 8 16 4 21 8 21 8 16 8 26 12 21 8 26 8 4 26 8 38 16 21 16 1 38 32 2 38 26 8 16 8 21 26 12 1 38 21 2 32 12 16 8 32 12 12 12 27 16 21 8 1 38 38 4 28 21 -- 4 1 44 32 2 44 21 8 12 29 26 -- 1 1 50 26 4 44 21 8 8 32 -- 1 -- 44 -- 2 21 -- 1 31 Total 7.067 752 536 50 4,798 1,038 637 343 673 632 469 291 Mean 229 26.9 17.9 1.7 155 34.6 20.5 11.1 22.4 20.4 15.6 9.4 Max 5,640 32 38 12 4,000 65 57 44 44 57 26 21 Min 0 16 1 1 0 16 2 2 12 4 4 1 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- -- -- -- -- Year 1963: Total 17,286 Mean 47.4 Max 5,640 Min 0 Cfsm In. -- Ac-ft 5 10 15 20 25 30 137 Discharge in thousand gallons per day, calendar year 1964 Day Jan. l'eb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 4 2 8 3 8 4 8 8 6 4 7 1 8 2 9 4 4 11 2 12 2 13 2 14 1 1 16 1 17 1 18 1 19 2 12 21 12 22 8 23 2 24 1 1 26 0 27 0 28 0 29 0 0 -- 31 0 -- -- -- -- -- Total 100 0 0 0 0 0 0 0 0 0 0 0 Mean Max Min 3.2 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- -- -- -- -- Year 1964: Total 100 Mean .3 Max 12 Min 0 Cfsm-- In. -- Ac-ft 5 10 15 20 25 30 138 Discharge in thousand gallons per day, calendar year 1965 Day Jan. Feb. Mar. /pr. May June July Aug. Sept. Oct. Nov. Dec. 1 0 0 2 0 0 3 0 0 4 0 0 0 0 6 0 0 7 0 0 8 0 0 9 0 0 0 0 11 0 1,520 12 0 2,560 13 0 74 14 0 32 0 16 16 0 12 17 0 12 18 76 12 19 0 12 1 12 21 0 16 22 0 16 23 0 16 24 0 21 0 26 26 0 38 27 0 26 28 0 26 29 0 21 -- 0 26 31 -- -- 0 -- -- -- 38 Total 0 0 0 0 77 0 0 0 0 0 0 4,532 Mean 2.5 146 Max 0 0 0 0 76 0 0 0 0 0 0 2,560 Min 0 0 0 0 0 0 0 0 0 0 0 0 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- -- -- -- -- Year 1965: Total 4,609 Mean 12.6 Max 2,560 Min 0 Cfsm In. -- Ac-ft 5 10 15 20 25 30 139 Discharge in thousand gallons per day, calendar year 1966 Day Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 44 44 16 16 26 0 0 0 2 44 44 16 12 26 0 0 3 3 44 44 16 12 21 0 0 5 4 44 44 21 12 16 0 0 2 44 44 21 12 16 0 0 0 6 44 38 21 8 16 0 0 'A 7 44 38 21 8 19 0 0 9 8 44 38 16 8 28 0 0 16 9 44 38 26 8 21 0 0 12 50 32 26 8 16 0 0 25 11 57 32 26 4 16 0 0 8 12 65 32 21 8 16 0 0 8 13 74 44 21 4 16 8 0 4 14 57 44 21 14 16 2,340 0 2 50 44 26 12 12 0 0 4 16 44 44 21 8 8 0 0 4 17 44 44 16 8 4 0 0 2 18 44 44 16 8 4 0 0 4 19 44 44 28 23 12 0 0 8 44 44 26 26 4 0 0 4 21 44 44 21 21 2 0 0 4 22 44 32 21 16 2 0 218 4 23 44 26 16 16 1 0 0 4 24 44 26 16 12 1 0 0 4 44 21 16 12 1 0 0 4 26 44 21 16 16 1 0 0 4 27 44 21 16 16 1 0 0 4 28 44 21 16 21 1 0 0 4 29 44 -- 16 26 0 0 0 4 44 -- 16 26 0 0 0 4 31 44 -- 16 -- 0 -- -- 0 -- 4 Total Mean 1,673 54.0 1,032 36.9 608 19.6 401 13.4 323 10.4 0 0 0 0 2,348 75.7 218 7.3 208 6.7 Max 74 44 28 26 28 0 0 0 0 2,340 218 34 Min 44 21 16 4 0 0 0 0 0 0 0 0 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. _ __ -- __ -- -- -- -- -- -- -- -- -- -- -- Year 1966: Total 6,811 Mean 18.7 Max 2, 340 Min 0 Cfsm In. -- Ac-ft 5 10 15 20 25 30 140 Discharge in thousand gallons per day, calendar year 1967 Day Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 1 0 0 2 2 1 0 0 3 2 1 0 0 4 2 1 0 0 2 1 0 0 6 4 1 0 0 7 2 1 0 0 8 2 1 0 0 9 1 1 0 0 1 1 0 0 11 1 1 10 0 12 1 1 0 0 13 1 1 0 0 14 1 1 0 0 1 1 0 0 16 1 9 0 0 17 2 1 0 0 18 4 1 0 0 19 2 1 0 0 1 1 0 54 21 1 1 0 0 22 1 1 0 0 23 1 0 0 0 24 1 0 0 0 1 0 0 0 26 1 0 0 0 27 1 1 0 0 28 1 1 0 0 29 1 -- 0 0 1 -- 0 0 31 1 -- -- -- -- 0 -- Total 46 32 0 0 0 0 0 0 0 10 54 0 Mean 1.5 1.1 0 0 0 0 0 0 0 .3 1.8 Max 4 9 0 0 0 0 0 0 0 10 54 0 Min 1 0 0 0 0 0 0 0 0 0 0 0 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- -- -- -- -- Year 1967: Total 142 Mean .4 Max 54 Min 0 Cfsm -- In. -- Ac-ft -- 3470. Creque Gut above Mt. Washington R,:; rvc ir, St. Croix, V.1. Location.--Lat 17' 44' 58", long 64' 52' 07", 0.1 mile upstream of headwaters of reservoir, 0.2 mile upstream from dam, 2.6 miles north of Ft. Frederick, Frederiksted. Drainage area.--0.50 sq mi. Records available.--Discharge: September 1964-October 1968 (discontinued). Chemical analyses: 1963-68. Gage. --Water-stage recorder and V-notch weir in concrete control. Altitude of gage is 420 ft (from topographic map). Extremes.--Maximums and minimums (discharge in gallons per minute, gage height in feet). Annual maximum discharges for years 1965-67 Annual minimum discharge for years 1965-68 Date Time Discharge Gage height Date Time Discharge Gage height Dec. 11, 1965 1430 69,000 3.77 1965 April & March No flow (many days) -- Oct. 14, 1966 0400 41,000 3.30 1966 July 15 0.4 1.00 Oct. 10, 1967 2300 12,000 2.59 1967 June 12-19 No flow -- 1968 Feb. 14-16 No flow -- 1965-1967: Maximum discharge, 69,000 gpm Dec. 11, 1965 (gage height 3.77 ft); minimum, no flow several days in 1965, 1967-68. Remarks.--Discharge records poor. 5 10 15 20 25 30 142 Discharge in thousand gallons per day, calendar year 1964 Day Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 7 3 3 2 7 3 7 3 6 3 5 4 6 3 4 6 3 5 6 4 3 4 7 4 3 2 8 7 3 6 9 6 5 4 5 5 4 11 4 5 4 12 4 4 4 13 4 4 4 14 4 5 2 4 7 4 16 2 4 3 4 17 3 4 3 4 18 3 11 4 3 19 3 6 4 3 1 4 3 3 21 6 4 3 3 22 15 13 2 3 23 13 4 3 3 24 13 4 3 3 11 4 7 3 26 9 7 4 3 27 5 6 3 3 28 13 7 5 3 29 13 7 4 3 -- 11 5 4 3 31 -- -- -- -- 4 -- 3 Total 172 114 112 Mean 5.5 3.8 3.6 Max 13 7 7 Min 4 2 2 Cfsm -- -- -- -- In. -- -- -- -- Ac-ft -- -- Year 1964: Total Mean Max Min Cfsm -- In. -- Ac-ft 5 10 15 20 25 30 143 Discharge in thousand gallons per day, calendar year 1965 Day 1 1, ,.. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 1 3 29 20 11 4 15 11 104 2 2 2 1 4 26 17 9 4 13 11 89 3 2 2 1 4 4 26 17 11 4 13 11 70 4 2 2 1 3 1,660 26 17 9 7 11 11 75 2 2 1 2 943 35 17 9 31 11 20 70 6 2 2 1 2 96 55 17 9 36 13 IS 70 7 2 2 1 50 40 17 9 32 15 15 70 8 2 1 1 32 40 17 7 32 13 15 112 9 2 1 1 23 36 17 6 37 11 1,280 89 2 1 1 20 36 15 6 20 9 64 116 11 2 1 1 15 36 13 6 26 7 5.0 2,960 12 2 3 1 0 13 36 11 6 20 6 1,770 2,060 13 2 1 1 0 13 36 15 6 15 6 336 600 14 2 1 1 13 36 13 6 13 6 190 440 2 1 1 15 32 21 6 13 6 140 400 16 2 1 1 1 23 29 15 6 13 6 140 385 17 3 1 1 1 15 32 15 6 13 106 160 370 18 3 1 1` 1 2,510 32 13 6 11 15 160 370 19 4 1 0 2 204 29 13 6 13 13 160 355 -1 1 1 284 29 11 6 23 26 160 385 21 4 1 11 4 170 26 11 10 15 15 160 340 22 6 1 9 84 26 9 9 13 17 160 325 23 4 1 1 6 50 23 7 9 13 15 180 280 24 4 1 1 5 57 23 7 7 13 13 170 280 1 1 SO 23 6 6 15 13 400 280 26 5 1 1 40 23 9 6 13 13 333 350 27 1 1 1 b 36 23 9 5 15 17 112 250 2Fi 4 1 2 3 36 23 13 7 15 13 96 250 29 4 -- 1 3 32 20 11 6 15 11 96 220 4 1 3 29 20 13 5 15 11 93 184 31 3 1 29 9 5 11 205 Total 9 2 37 32 81 6,553 906 415 233 509 470 6,519 12,154 Mean 3.0 1.3 1.0 2.7 211 30.2 13.4 7.5 17.0 15.2 217 76.7 Max 6 3 4 9 2,510 55 21 11 37 106 1,770 2,960 Min 2 1 0 0 3 20 6 5 4 6 11 70 Cfsm -- -- -- In. Ac-ft Year 1965: Total 28,001 Mean 76 7 Max 2,960 Min 0 Cfsm In. -- Ac-ft 5 10 15 20 25 30 , , , , , . . 144 Discharge in thousand gallons per day, calendar year 1966 Day Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 180 150 60 36 23 15 6 5 3 6 2 190 140 60 36 23 15 6 5 3 6 3 180 140 60 36 23 13 7 5 3 6 4 170 120 70 36 17 15 6 5 S 9 170 112 60 32 17 15 5 5 6 9 6 180 150 70 32 17 13 10 5 5 9 7 170 160 60 32 17 13 9 5 10 9 8 160 150 60 32 20 13 6 5 6 6 9 160 120 55 29 20 15 5 5 5 5 170 89 55 29 17 20 5 5 6 6 11 150 89 55 26 17 15 5 5 17 5 12 321 96 SO 26 20 IS S 4 6 5 13 907 89 SS 26 17 20 6 4 6 115 14 295 89 55 31 17 20 2 6 6 1,030 235 89 60 29 15 15 1 5 6 15 16 235 96 55 29 17 13 2 5 7 13 17 220 96 55 29 17 13 2 4 6 15 18 220 104 55 26 15 13 3 5 6 13 19 220 82 85 66 17 13 4 7 6 11 220 75 65 104 15 11 4 6 7 13 21 220 75 55 29 20 9 6 6 6 11 22 205 70 50 23 17 7 6 7 6 11 23 180 70 45 26 17 7 6 5 6 11 24 180 75 45 26 17 7 6 5 6 11 180 65 45 23 20 7 6 6 6 9 26 170 75 45 23 17 6 6 11 6 7 27 170 70 40 23 20 7 5 13 6 7 28 180 60 40 26 17 6 5 17 6 7 29 223 -- 36 23 15 13 6 6 6 9 160 -- 36 20 15 9 6 5 6 7 31 160 -- 36 -- 15 -- 6 5 -- 7 Total 6,781 2,796 1,673 964 551 373 163 187 185 1,403 531 365 Mean 219 99.9 54.0 32.1 17.8 12.4 5.3 6.0 6.2 45.3 17.7 11.8 Max 907 160 85 104 23 20 10 17 17 1,030 214 44 Min 150 60 36 20 15 6 1 4 3 5 5 6 Cfsm-- -- -- -- -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- -- -- -- -- Year 1966: Total 15,972 Mean 43.8 Max 1,030 Min 1 Cfsm -- In. -- Ac-ft C,C,en.-4(7 ,, LALAV)CI.--1.--4,-. 0)f•-•.--1.-- •CT) Cr, 01CT) C7) CT),, N., ., r-4r--4.--I .-1 Cr r--I .-1 •-•r-t .-4r-1 e-I.--Ir-I r-I r•-I r-I ,. cn, coa,.. 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NJ NJ NJ 0 146 Discharge in thousand gallons per day, calendar year 1968 Day Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 2 3 0 2 2 1 2 2 1 8 2 2 2 0 6 1 1 2 5 1 8 3 2 2 1 3 1 1 2 4 1 5 4 2 2 1 2 1 1 2 5 1 5 5 2 2 1 2 1 1 2 5 1 5 6 2 2 1 2 2 1 2 5 1 5 7 2 1 0 1 1 1 2 15 1 8 8 2 1 1 1 1 1 2 15 1 5 9 2 T 1 1 1 2 2 8 5 5 10 2 1 1 1 1 1 2 8 3 5 11 2 1 1 1 1 1 2 5 1 5 12 2 1 1 1 1 1 2 5 1 5 13 1 1 1 2 1 1 1 5 1 3 14 2 0 1 3 1 2 1 3 1 3 15 2 0 1 2 1 2 1 3 1 3 16 1 0 2 1 1 2 1 3 1 3 17 2 1 2 1 1 2 1 3 1 3 18 2 1 2 2 1 1 1 24 1 3 . 19 2 1 2 3 1 1 1 3 1 3 20 2 1 2 2 1 1 1 3 1 23 21 2 1 2 2 1 2 3 3 88 5 22 2 1 1 2 1 2 2 3 8 5 23 13 1 1 2 1 2 2 3 3 5 24 3 1 1 2 2 2 2 3 3 5 25 3 1 1 1 1 2 1 3 3 3 26 3 1 1 1 1 2 1 1 3 3 27 3 4 1 1 2 2 1 1 1 3 28 3 1 2 1 1 2 1 1 1 3 29 3 1 2 6 1 2 1 1 22 3 30 3 -- 5 2 1 2 1 1 8 3 31 2 -- 2 -- 1 -- 1 1 -- 3 Total 78 36 41 59 35 44 48 150 166 154 Mean 2.5 1.2 1.3 2.0 1.1 1.5 1.5 4.8 5.5 5.0 Max 13 4 5 6 2 2 3 24 88 23 Min 1 0 0 1 1 1 1 1 1 3 Cfsm -- -- -- -- -- -- -- -- In. -- -- -- -- -- -- -- -- -- -- Ac-ft -- -- -- -- -- -- -- -- -- -- Year 1968: Total Mean Max Min Cfsm In. Ac-ft - - 1 ) 147 '.:HEMICAL ANALYSIS :,.•,illigrams per liter 'd "6(3 - E Hd Specific conducta nce (micromhos at 25°C) Temperature ( °C) Discha rge (gpm ' _ . _- •--, . Hardness , ,,) >1. 13 32 as CaCO3 co TS iw, - 0 - 'D '4 B 3 .c •- - ,,, ..... c) ---- .._._ ro - E ...... g 6 2 `-' 2 c 4 f3 o 2 8 '8 ..,, a', •• cr) E g --- g 2 Z 7,2. 8 c 2 g. ___ -j 74 0 c 0 0 4, <,1-) 0> 0 to 9_, 2 X '-• . -ch8 :3 u, 0 E`-ii) (S) - tJ 1 Ze. ro 7i0 ")' to ty. 0 ro g„, -a ,-, .. ...0 - t ro co cn E u Z 0 a. Ei Jan. 15, 196 3 Feb. 18 Feb. 19 May 29 June 20 -- -- -- 400 28 21 26 26 -- -- 0.00 .00 .00 -- -- -- -- 61 82 96 -- 8.0 11 54 -- 62 82 18 -- 284 398 452 -- -- -- -- -- 8.0 1.2 1.2 -- 55 71 91 0.4 .4 .5 0.2 .4 .1 -- -- -- *354 470 *510 185 250 462 140 285 0 0 91 -- -- 623 7.8 24 797 8.0 24 936 8.0 24 -- -- 24 -- -- 25 -- -- -- -- -- July 25 Aug. 27 Sept. 24 Oct. 16 Nov. 26 7.6 40 25 26 28 -- 17 -- -- -- -- .02 -- -- 69 -- 31 -- -- -- 318 -- -- -- -- -- 82 .1 .1 -- -- 240 300 310 122 152 -- 47 -- -- -- -- -- 25 733 8.1 24 -- -- 25 -- -- 24 -- -- 23 -- -- -- -- -- Dec. 18 Jan. 20, 196 Feb. 25 Mar. 23 Apr. 20 9.4 4.5 .8 .8 -- -- 26 25 .00 .00 -- -- 100 102 31 28 91 99 514 500 -- -- 8.4 20 102 108 .4 .6 -- .1 .1 -- -- -- -- *652 *647 232 354 376 377 370 -- -- -- 0 0 -- -- -- 1,070 1,060 -- 23 -- -- 23 -- -- 23 -- 8.1 24 -- 7.9 25 -- May 25 Sept. 24 Oct. 20 Nov. 16 Dec. 18 .8 -- 7.5 2.1 4.9 28 24 25 29 24 .00 .00 .00 .00 .00 -- -- -- -- -- 100 94 98 100 104 27 22 26 27 28 84 112 94 133 91 474 356 472 604 488 -- 35 -- 11 25 14 12 15 100 135 108 100 110 .7 .6 .6 .7 .7 .1 .0 .0 .1 .5 -- -- -- -- *595 *648 *612 *615 * 639 360 325 352 360 375 0 0 0 0 0 1,020 1,070 1,040 1,010 1,060 8.0 23 -- 8.6 25 20 8.1 24 50 7.9 23 15 8.2 23 10 Jan. 15, 19 Feb. 16 Mar. 18 Apr. 14 May 12 5 .84 -- .29 2 10 26 24 22 24 26 .02 .00 .00 .02 .00 -- -- -- -- -- 100 104 96 96 140 28 23 24 24 37 95 108 103 135 133 492 508 486 466 508 13 11 2.4 15 97 108 112 112 165 192 .6 .7 .7 .8 .6 .4 .5 .7 .1 1.3 -- -- -- -- -- 613 *633 *584 690 *921 364 354 338 338 502 0 0 0 0 85 1,060 1,080 1,080 1,150 1,470 8.0 22 10 8.2 23 7 8.2 23 5 8.1 22 0 7.9 24 5 June 16 July 15 Aug. 17 Sept. 27 Oct. 29 - 8 -- 11 b .6 24 27 28 25 25 .00 .00 .00 .02 .00 -- -- -- -- 116 126 10 116 10f 32 31 30 • 31 11 95 103 101 95 98 484 544 2811 322 ;16 4 34 23 17 18 17 138 138 128 125 120 .6 .6 .5 .6 . 6 .1 .0 .3 .1 .0 -- -- -- -- -- 678 *714 *505 *678 *652 421 442 224 417 397 24 0 0 0 0 1,150 8.0 26 1,220 8.0 -- 885 8.3 25 1,180 7.4 25 1,130 8.0 24 5 3 7 30 5 Nov. 30 54 Dec. 21 "333 Jan. 19, 1966 111 Mar. 16 34 Apr. 13 20 25 25 23 26 27 .00 -- .01 0.0] .00 .00 .00 .00 .00 .00 88 /6 7u 54 66 27 33 24 35 38 65 41 66 09 66 306 341 348 316 336 16 11 9.6 12 10 92 90 86 110 115 .6 .5 .5 .6 . .0 .1 .1 .0 -- -- -- 509 *471 * 482 *463 * 478 330 334 273 278 306 5 52 0 19 30 885 7 . 9 23 -- 816 7.9 24 5 787 7.7 22 10 816 7.9 -- 5 864 7.9 32 5 May 11 June 9 July 13 Aug. 12 Sept. 13 13 -- 3.0 2.0 3.0 27 29 28 28 27 .0] .00 .0u .00 .0C .00 .00 .00 .00 .00 64 95 118 102 132 38 39 27 33 39 68 81 94 117 125 358 480 522 510 502 -- 4 -- -- -- 9.2 10 12 50 98 112 115 119 122 175 .6 .5 .5 .5 .5 .1 .7 .1 .1 .0 "505 *642 *684 *643 *802 316 398 406 390 490 22 0 0 0 78 888 1,070 1,140 1,110 1,360 7.9 24 5 8.3 24 10 7.9 25 10 7.9 -- 15 7.9 -- 5 Nov. 9 Dec. 7 Jan. 4, 1967 Feb. 8 Mar. 10 4.8 12.5 3.4 1.6 2.3 26 25 28 27 26 .00 Al .02 .00 .00 .00 .00 .00 .00 .00 116 104 118 114 118 30 32 34 29 12 99 93 94 98 124 528 512 542 528 526 18 16 18 16 15 125 111 125 118 118 .5 .4 .4 .5 .5 .2 .4 .1 .4 .3 -- *670 *640 *685 *679 *663 413 391 434 404 344 0 0 0 0 0 1,180 1,110 1,170 1,160 1,148 7.8 24 10 7.8 -- 10 8.1 23 -- 7.9 -- -- 8.0 -- -- * Residue on evaporation at 160' e Estimated. 1.18 CHEMICAL ANALYSIS Milligrams per liter Hardness 6 o. - as CaCO3 ,., C V. c.) 4. _ a> Sodium (Na ) Potassium ( K Bica rbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfa te ( SO4 ) Chloride ( C1) Fluoride ( F ) - ,_.ic :,.: Orthophospha te ( PO4 ) Dissolved solids calcula ted Ca lcium, magnesium Non- carbonate Specific conducta nce (micromhos at 25°C) Hd 1 Temperature ( °C) I Footnote Silica ( Si02 ) - 2 ti Ma ng anese ( Mn ) Calcium ( Ca ) Date of collec tion E.3 L.til, o -.._ . N El Apr. 4, 1967 May 9 June 7 July 11 Aug. 8 1.6 1.2 .38 0 -- 28 28 28 27 28 0.03 0.00 .00 .00 .00 .00 .04 -- .00 .00 114 108 112 108 130 43 26 33 29 38 71 104 88 99 140 512 516 512 508 486 18 14 17 16 46 125 115 118 120 240 0.5 .5 .6 . 4 0.3 .4 1.9 .6 .3 -- -- -- -- -- * 653 *658 *647 *635 *874 462 376 415 388 480 0 0 0 0 82 1,140 7.9 23 1,120 7.9 24 1,110 7.9 26 1,120 7.9 25 1,500 7.7 24 -- -- -- -- -- Sept. 12 Oct. 10 Nov. 9 Jan. 12,1968 Jan. 18 -- .51 -- .6 26 28 28 28 .00 .00 .00 .00 .00 .00 .00 .00 96 106 84 84 29 38 23 29 113 77 111 2.3 115 2.4 458 490 450 470 4 -- -- 23 16 -- 15 15 145 115 120 122 120 .2 .6 -- .7 .8 .2 .1 -- .0 .0 -- -- -- 0.2 .2 *639 *647 -- *608 626 358 415 -- 305 330 0 0 -- 0 0 1,140 7.9 -- 1,110 8.3 26 -- -- -- 1,050 8.1 -- 1,080 8.1 -- -- -- -- -- -- Feb. 13 Mar. 14 Apr. 11 May 9 June 5 2.6 -- -- -- -- 27 34 26 30 3.7 .02 -- .00 .00 -- .00 .00 -- .00 .00 104 41 106 104 4.6 24 24 27 24 5.4 108 2.3 107 2.7 120 5.0 115 3.7 105 2.1_ 500 330 532 522 26 -- -- -- -- 45 16 6.0 9.6 14 11 122 118 135 122 115 . .4 .9 .9 .4 .0 .2 .4 .1 .3 .2 .0 .7 .6 650 495 693 *684 365 360 200 375 360 34 0 0 0 0 0 1,110 8.2 -- 862 8.0 -- 1,180 8.2 -- 1,140 8.2 -- 607 9.9 -- -- -- -- -- -- Aug. 8 Sept. 5 -- -- 28 -- .00 114 28 158 5.1 438 6 56 235 .6 2.0 -- -- 849 -- 400 -- 31 -- 1,450 8.3 -- -- -- -- -- -- . * Residue on evaporation at 180'C. -- -- -- 1,19 GROUND-WATER STATIONS Well 1 ( 4 5 - 6 4 . 4 6 - 2 - 5 0 ) Owner. --V .I. Government. Measuring point.--Hole in pump base, 2.5 ft above lsd. Name.--Concordia-7. Land elevation.--29 ft above msl. Location.--Lat 17° 45' 32", long 64° 46' 03". Highest water level.--1.75 ft below lsd, May 11, 1966. Description.--Drilled water-table production well, Lowest water level.--57.40 ft below lsd, Mar. 5, 1964. diem 6-in, cased 0-81. Records available.--Chemical analyses : 1964-67. Depth.--81 ft. Water levels: 1962-68. Aquifer. --Limestone of Tertiary age. Remarks. --Measurement discontinued, October 1968. CHEMICAL ANALYSIS - - N a :: '4 Orthophospha te ( PO4 ) Dissolved solids calcula ted Hardness as CaCO3 Ca lcium, mag nesium Non- carbonate Specific conducta nce (micromhos at 25°C) Hd Temperature ( 0C) 1 Footnote Milligrams per liter Date of collection ) Discharge (gpm Magnesium ( Mg ) Sodium ( Na Potassium ( K ) Bicarbonate ( HCO3 ) Ca rbona te ( 003 ) Sulfate ( SO4 ) Chloride ( C1) Fluoride ( F) Manganese (Mn To 0 6 0 a (.) ----,, 0 - w FA ..._ 0 o c.n )ct. 5, 1964 -- 34 0.00 -- 104 74 328 420 -- 122 570 0.5 0.5 -- *1,440 564 220 2,600 7.9 -- -- nay 13, 1965 -- 30 .00 -- 58 48 264 534 -- 104 260 .7 3.1 -- *1,030 342 0 1,750 8.1 27 -- uly 16 -- 29 .00 -- 64 50 250 538 -- 88 262 .6 7.5 -- *1,050 365 0 1,760 8.0 27 -- eb. 15, 1967 -- 34 .00 -- 68 60 256 536 -- 108 288 .3 16 -- *1,120 416 0 1,900 7.8 27 -- )ct. 13 -- 30 .00 0.00 56 61 240 528 -- 98 260 .7 12 -- *1,040 390 0 1,780 8.1 -- -- Joy. 9 -- -- *Residue on evaporation at 180°C. Water levels, in feet below land surface Water Date Water Water Water Date Date Date level level level level Jan. 23, 1964 a 43.14 Nov. 29, 1965 0 46.71 Feb. 4, 1963 a 18.72 June 12, 1962 a 25.17 a 43.92 Dec. 21 a 46.00 July 2 a 25.16 Feb. 11 a 18.70 Feb. 4 0 18.60 Feb. 13 a 36.50 Jan. 18, 1966 a 41.60 July 10 a 22.65 Feb. 18 July 18 a 24,70 Feb. 25 a 18.47 Feb. 18 a 45.12 Feb. 23 0 41.92 a 57.40 Mar. 16 a 42.54 July 26 a 22.65 Feb. 28 a 18.40 Mar. 5 Aug. 1 0 17.74 Mar. 4 a 15.68 Mar. 20 a 47.40 Apr. 14 8.43 11 a 17.00 Apr. 1 a 45.20 May 11 1.75 Aug. 7 0 27.62 Mar. a 47.50 July 13 a 28.00 Aug. 16 a 27.64 Mar. 20 0 42.10 Apr. 9 Apr. 23 a 45.70 Aug. 12 a 49.20 Aug. 24 a 27.89 Mar. 27 a 42.21 a 50.15 Aug. 29 0 28.00 Apr. 3 a 42.46 Apr. 27 a 44.40 Sept. 13 a 39.25 May 6 a 46.40 Oct. 11 050.42 Sept. 6 a 30.10 Apr. 22 8.50 Nov. 9 a 48.40 Sept. 14 a 28.97 Apr. 29 a 44.11 May 13 a 44.50 0 28.50 May 15 a 43.60 May 19 a 45.90 Dec. 7 Sept. 21 a 47.80 Jan. 4, 1967 a 43.75 0 29.32 May 21 a 43.40 May 25 Sept. 25 June 1 a 49.00 Feb. 7 a 43.47 a 40.50 Oct. 10 a 28.80 June 10 Feb. 15 a 44.58 a 42.70 June 15 8.50 Oct. 24 a 28.10 June 19 Mar. 9 a 43.40 30 a 29.50 June 25 a 42.47 July 13 a 52.50 Oct. a 41.00 July 24 0 49.90 Apr. 4 a 43.24 Nov. 8 a 27.25 July 3 0 25.77 July 15 a 42.01 Aug. 12 a 47.50 May 9 a 42.04 Nov. 13 a 40.70 a 43.50 Aug. 21 052.90 June 7 Nov. 20 a 26.50 July 23 a 41.10 rcpt. 9 a 50.50 July 11 a x9.64 Nov. 27 a 26.18 July 31 7 0 39.80 Oct. 5 "12.40 Aug. 8 a 40.40 Dec. 6 0 26.18 Aug. "55.40 Sept. 12 a 43.68 Dec. 13 a 26.50 Aug. 21 0 40.90 Feb. 3, 1965 Dec. 21 a 26.80 Sept. 5 a 37.10 May 11 "47.84 Oct. 13 a 40.89 a 41.48 Dec. 28 a 27.33 Seat. 12 a 37.40 July 16 "46.56 Nov. 9 "47.23 Dec. 13 a 43.30 a 37.50 Aug. 18 Ian. 11, 1963 a 21.58 Sept. 18 28 a 45.99 Oct. 3, 1968 0 38.30 018,35 Oct. 3 a 37.90 Sept. Ian. 22 a 43.45 Oct. 29 a 47.84 Jan. 31 0 17.65 Jan. 7, 1964 ,a - Pumping. 1 - - 150 Well 2 ( 44-64 .44-6-27 ) Owner.--U.S. Government-V.I. Government. Name.--Estate Thomas, USGS-39. Location.--Lat 17° 44' 48", long 64° 44' 20". Description.--Drilled water-table production well, diem 4-in, cased 0-250, perforated 210-250 ft. Depth.--390 ft; plugged back to 250 ft. Aquifer.--Marl and limestone of Tertiary age. Measuring point.--Top of casing, 1.40 ft above lsd. Land elevation.--300 ft above msl. Highest water level.--121.23 ft below lsd, Nov. 7, 1968. Lowest water level.--202.60 ft below lsd, July 10, 1968. Records available. --Chemical analyses: 1966-67. Water levels: 1966-69. CHEMICAL ANALYSIS Milligrams per liter Nitrate ( NO3 ) r Orthophospha te ( PO4 ) Dissolved solids calculated Hardness as CaCO3 Ca lcium, mag nesium Non- ca rbona te Specific conducta nce (micromhos at 25°C) f Date o collection ) Discha rge (gpm in ....., ozi(.) in Iron ( Fe ) I Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) Bicarbonate ( I-1003 ) Ca rbona te ( 003 ) Sulfate ( SO4 ) Hd Temperature ( CC ) Footnote .--. - C) o a).0 , o o o o 0.6 1.0 -- 4,910 1,500 1,140 7,830 7.4 -- -- -- 32 0.00 0.00 360 146 1,240 408 0 732 2,200 iug. 23,1966 4,290 1,400 1,010 6,300 7.6 -- -- uly 12, 1967 -- 29 .06 .04 326 143 1,050 476 0 632 1,880 .5 .0 -- -- -- -- 1,850 -- -- -- -- -- -- 6,950 -- 28 -- ,lov. 17, 1969 -- 35 -- -- -- -- -- Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level 31 98.31 Apr. 11 , 1 968 200.7 Jan. 7, 1969 201.28 Oct. 11, 1966 197.36 June 8, 1 967 Feb. 6 201.50 Nov. 10 197.50 Aug. 15 200.35 Mar. 9 200.9 200.38 Jan. 4, 1967 197.90 Oct. 13 a 199.10 July 10 202.60 July 22 201.65 Feb. 7 198.22 Dec. 11 199.23 Aug. 7 200.61) Sept. 23 187.40 Dec. 7 197.74 Sept. 12 a 199.07 Tune 5 201.25 June 6 Jan. 11, 1968 199.40 Sept. 3 200.60 Nov. 17 201.68 Mar. 9 198.60 Apr. 5 198.74 Feb. 13 199.60 Nov. 7 121.23 Dec. 15 186.28 May 8 199.00 Mar. 14 200.6 Dec. 5 201.29 a - Pumping, - - -- -- 151 Well 3 (44-64.44-4-86) Owner.--U.S. Government. Measuring point.--Hole in casing cover, 0.9 ft above lsd. Name.--NPS-1 (Sion Farm). Land elevation.--240 ft above msl. Location.--Lat 17° 44' 07", long 64° 44' 26". Highest water level.--191.91 ft below lsd, Oct. 16, 1969. Description.--Drilled water-table production well, diem Lowest water level.--232.45 ft below lsd, June 5, 1968. 6-in, cased 0-248, perforated 208-248 ft. Records available.--Chemical analyses: 1963-68. Depth.--248 ft. Water levels: 1965-69. Aquifer. --Marl of Tertiary age. CHEMICAL ANALYSIS Hardness as CaCO3 Ca lcium, mag nesium Non- ca rbonate Specific conducta nce (micromhos at 25°C) Milligrams per liter Hd Temperature ( °C ) Footnote Date of collection Discha rge (gpm ) Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calcula ted Mang anese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) l 6- ,, ._. 0 0 ,,, .___. ,, 2a) _ a) 7' 8 - Ca rbona te ( CO3 ) ro -. r•-> 0 0 ,--,1 - .c!, 0 co c o ..., i7) cox m!-) - '-' :-'0 u) 102 435 0.5 5.3 -- *1,430 95 0 2,450 7.8 -- -­ une 23,1963 -- 24 0.00 -- 20 11 512 590 0 8 118 398 .5 9.6 -- *1,390 80 0 2,290 8.3 -- -­ une 21, 1965 -- 22 .00 - 20 7.3 512 594 -- 20 12 480 609 0 76 396 .6 11 -- *1,380 100 0 2,320 7.7 -- -­ )ec. 7, 1966 -- 23 .03 -- 1, 340 80 2,340 8.3 26 -- 0.00 22 6.1 49613.0 596 10 85 400 .5 2.5 Aar. 6, 1968 -- 24 .00 -- -- -- 410 -- -- -- -- -- 2,380 -- 27 -- pct. 16, 1969 -- -- -- -- -- -- -- 2,360 -- 27 -- ,Jov. 24 -- -- -- -- -- 2,360 -- 29 -- *Residue on evaporation at 180°C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level 216.9 Dec. 5, 1968 8 219.10 Dec. 21, 1965 216.1 Feb. 7, 1967 219.45 Jan. 11, 1968 218.56 216.50 Feb. 13 224.0 Jan. 7, 1969 May 11, 1966 218.51 Mar. 9 225.90 Mar. 14 225.7 Feb. 6 216.33 July 14 218.30 Apr. 5 214.12 217.05 Apr. 11 218.5 June 6 Aug. 12 216.30 May 8 May 9 220.0 July 22 220.21 Sept. 14 219.90 July 11 e210.00 218.33 June 5 232.45 Oct. 16 191.91 Oct. 11 218.74 Aug. 15 217.00 Sept. 12 216.89 July 10 232.25 Nov. 24 201.03 Nov. 10 215.32 216.60 Oct. 13 a 221.50 Aug. 7 221.90 Dec. 15 Dec. 7 Dec. 11 *. 220.52 Nov. 7 217.93 Jan. 4, 1967 217.40 a - Pumping e - Estimated. -- -- 152 Well 4 (43-64.44-14-32) Owner.--U.S. Government-V.I. Government. Measuring point.--Top of instrument platform, 3.07 ft above lsd. Name.--USGS-46 (Castle Coakley). Land elevation.--97 ft above msl. Location.--Lat 17° 43' 39", long 64° 44' 51". Highest water level.--86.70 ft below lsd, Dec. 25, 1969. Description.--Drilled unused water-table well, diam 6-in, Lowest water level.--90.11 ft below lsd, May 10, 1969. cased 0-154, slotted 94-154 ft. Records available.--Water levels: 1969. Depth.--154 ft. Remarks. --Recorder. Aquifer. --Marl and limestone of Tertiary age. Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (in feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1969 5 89.95 89.81 89.83 89.99 -- 87.34 87.35 87.40 88.11 88.10 87.79 86.82 10 89.88 89.78 89.86 90.00 90.11 87.20 -- 87.45 88.20 88.12 -- 86.80 15 89.76 89.78 -- 90.01 90.00 87.20 -- 87.48 88.23 88.12 -- 86.78 20 89.74 89.80 -- 90.09 89.71 87.26 -- 87.99 88.28 88.00 -- 86.76 25 89.76 89.81 89.96 -- 89.08 87.29 87.33 88.03 88.18 87.95 -- 86.70 eom 89.77 89.79 89.98 -- 88.59 87.34 87.36 88.09 88.16 87.90 86.83 -- Well 5 (43-64.45-16-15) Owner.--U.S. Government-V.I. Government. Measuring point.--Top of instrument platform, 3.00 ft above lsd. Name .--USGS-43 (Estate Strawberry). Land elevation.--117 ft above msl. Location.--Lat 17° 43' 52", long 64° 45' 31". Highest water level.--96.02 ft below lsd, Jan. 15, 1968. Description.--Drilled unused water-table well, diam 4-in, Lowest water level.--97.37 ft below lsd, Sept. 5, 1968. cased 0-200, perforated 110-200 ft. Records available.--Chemical analysis: June 8, 1967. Depth.--200 ft. Water levels: January to September 1968. Aquifer. --Marl of Tertiary age. Remarks.--Well destroyed. CHEMICAL ANALYSIS Specific conducta nce (micromhos at 25 °C) Hd Milligrams per liter Date of collection Discharge (gpm ) -.. - a Hardness as CaCO3 Dissolved solids calcula ted Iron ( Fe ) Mang anese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) Bica rbona te (HCO3 ) Ca rbona te ( 003 ) Sulfate ( SO4 ) - r.. 5 6 'r - Z - 0. Ca lcium, mag nesium a) V B _ a)v r) -, .c-: 0 - 1 a 8 a,.., T.' 0. CI. 23 0 ,-- 0 ./.. ', , (0 0 ,' - ,- 7: V . 0 Z 0 1,680 0.4 1.2 3,910 1,240 844 5,940 7.5 -- inc 8, 1967 -- 30 0.01 -- 290 126 973 486 -- 572 Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (In feet) Day Jan Feb Mar Apr May June July 4" Aug Oct Nov Dec T Sept 1968 5 96.19 96.34 96.52 96.65 96.85 96.99 97.17 97.37 10 96.21 96.34 96.53 96.65 96.85 97.10 97.18 15 96.02 96.26 96.41 96.53 96.71 96.87 97.09 97.18 20 96.17 96.24 96.42 96.54 96.70 96.90 97.05 97.18 25 96.11 96.28 96.42 96.59 96.75 96.94 97.11 97.21 eom 96.20 96.33 96.48 96.58 96.78 96.96 97.14 97.30 Temperature ( 'C ' Footnote 1 153 Well 6 (43-64.45-15-15) Owner.--U.S. Government-V.I. Government. Name.--USGS-41 (Estate Strawberry). Location.--Lat 17° 43' 50", long 64° 45' 32". Description.--Drilled water-table production well, diam 4-in, cased 0-340, perforated 120-340 ft. Depth.--340 ft. Aquifer.--Limey sediments of Tertiary and Quaternary age. Measuring point.--Top of casing, 1.25 ft above lsd. Land elevation.--115 ft above msl. Highest water level.--63.50 ft above lsd, Oct. 11, 1966. Lowest water level.--68.75 ft above lsd, Dec. 5, 1968. Records available.--Chemical analysis: Sept. 8, 1968. Water levels: 1966-69. Remarks.--Well destroyed. CHEMICAL ANALYSIS Hardness Specific conducta nce (micromhos at25°C) Hd Temperature ( °C)- Footnote 1 I Milligrams per liter Date of collection Discha rge (gpm ) -6' Ca .... , ,oo zi1 -a-, ,. 02 - Ma nganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) Chloride ( C1) Fluoride ( F ) Nitrate ( NO3 ) Orthophosphate ( PO4 ) Dissolved solids calculated as CaCO3 Ca lcium, magnesium Non- carbonate ;ept. 8, 1968 -- -- -- -- -- -- -- -- -- -- 820 -- -- -- -- 416 -- -- -- -- -- Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Oct. 11, 1966 Nov. 10 Dec. 7 Jan. 4, 1967 Feb. 7 63.50 64.12 63.83 64.10 64.32 May 8 June 7 July 11 Aug. 8 Sept. 12 64.71 65.30 65.23 65.17 65.8', Jan. 18, 1968 Feb. 13 Mar. 14 Apr. 11 May 9 66.02 66.09 66.25 66.40 66.57 Aug. 7, 1968 Sept. 5 Oct. 3 Nov. 7 Dec. 5 67.45 67.70 65.15 64.30 68.75 Mar. 9 Apr. 5 64.42 64.54 Oct. 13 Dec. 13 65.42 65.90 June 5 July 10 66.87 66.94 Jan. 7, 1969 67.08 -- Z-14 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --- -- -- -- - -- -- -- -- -- -- -- 154 Well 7 (43-64.46-10-40) Owner.--U.S. Government-V.I. Government. Measuring point.--Top of 4-in casing, 1.95 ft above lsd. Name.--USGS-40 (Estate Barren Spot) . Land elevation.--90 ft above msl. Location.--Lat 17° 43' 38", long 64° 46' 05". Highest water level.--64.96 ft below lsd, Mar. 9, 1967. Description.--Drilled unused water-table well, diam Lowest water level.--76.07 ft below lsd, Aug. 7, 1968. 4-in, cased 0-220, perforated 80-220 ft. Records available.--Water levels: 1966-69. Depth.--240 ft. Remarks.--Measurement temporarily discontinued. Aquifer.--Marl of Tertiary and Quaternary age. Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level Oct. 11, 1966 Nov. 10 Dec. 7 Jan. 4, 1967 Feb. 7 73.05 73.35 71.92 72.46 70.82 June 7, 1967 July 11 Aug. 8 Sept. 11 Feb. 13, 1968 66.38 73.58 73.52 73.59 74.60 May 9, 1968 June 5 July 10 Aug. 7 Sept. 5 74.50 74.78 74.11 76.07 74.92 Dec. 5, 1968 Jan. 7, 1969 Feb. 6 June 6 74.16 74.05 74.55 74.25 Mar. 9 May 8 64.96 73.95 Mar. 14 Apr. 11 74.32 74.43 Oct. 3 Nov. 7 74.80 74.17 Well 8 (43-64.45-4-74) Owner.--V.I. Government. Measuring point.--2.5 ft above lsd. Name.--Barren Spot-7. Land elevation.--60 ft above msl. Location.--Lat 17° 43' 16", long 64° 45' 38". Highest water level.--50.10 ft below lsd, Oct. 22, 1962. Description.--Drilled water-table production well, diam Lowest water level.--a63.65 ft below lsd, Nov. 14, 1967. 6-in, cased 0-115, perforated 55-115 ft, open hole Records available.--Chemical analyses : 1965-67. 115-140 ft. Water levels: 1962-68. Depth.--140 ft. Remarks.--Continuous recorder used from November 1962 to Aquifer. --Limey sediments of Tertiary and Quaternary age. October 1964. CHEMICAL ANALYSIS Temperature ( °C)1 Footnote Specific conducta nce (micromhos at 25°C) Milligrams per liter . Hardness E ^ - Ts a - .... -. as CaCO3 cr, - a) , -.4 ro 0' 0 r (1) ,,, 4a) u , iii - E 0 0 `-''' 'c13 7, - a) - 0 , . 0 E P. 4,-0' 0 .2 - O ._. - - 'Z' - ';' - 4-, 0 0 -- _c 0, ;I; w v) --- -0 ...., a Er •-• .--- E -0 7; - 4; L. -s. 2 0 - 0 III .. ro „ c „., 2. .z -E.). 0 1-,, 0 2 '7. L. 2 - 0" .a 0 r0 0 `--- -8 ro L) ,;:•, .c 0 a) 0 u 0in (-"! 171 •-• 0 r0 ° - 01 o, 0 -5 :E. co i':-'. "." t ' (.) (0 0 0 E 4-' 18 to n . c a, ... ­ CO 0 6 Z1-34 0 Cl) , 4 0 5. 35 uly 21, 1965 eb. 15,1967 uly 12 mg. 8 ept. 11 )ct. 13 Joy. 14 Dec. 12 24 34 li 22 27 27 0.00 .00 .00 .00 .00 .01 - - 0.00 .00 .00 .00 22 60 21 28 29 60 697 256 672 655 669 600 542 536 586 592 646 654 8.3 16 4.8 13 14 13 2,030 1,120 1,930 1,930 1,940 1,930 180 416 180 164 192 210 220 355 () 0 0 0 0 0 8.1 7.8 8.0 8.0 8.1 8.2 27 -- 27 -- 27 -- 27 -- 36 68 42 38 41 44 0 0 0 0 0 0 216 108 172 170 165 165 722 288 690 660 700 680 680 665 0.9 .3 .8 1.1 1.0 1.0 3,450 1,900 3,280 3,310 3,320 3,310 155 Date Water level June 4, 1962 June 12 June 29 July 9 July 16 52.12 51.93 51.90 51.08 52.03 July 23 52.03 Water levels, in feet below land surface Date Water level Date V, iter level July 30, 1962 51.94 Sept. 11, 1962 51.90 Aug. 6 Aug. 13 51.97 51.95 Sept. 17 Sept. 24 51.84 51.50 Aug. 22 51.85 Oct. 3 51.80 Aug. 27 51.90 Oct. 9 51.34 Sept. 4 51.95 Oct. 22 50.10 Date Oct. 29, 1962 Nov. 7 Nov. 14 Nov. 19 Water level 52.25 51.80 51.80 51.70 Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (in feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1962 S -- -- -- -- -- -- -- -- -- -- -- 52.82 10 -- -- -- -- -- -- -- -- -- -- -- 52.78 15 -- -- -- -- -- -- -- -- -- -- -- 52.76 20 -- -- -- -- -- -- -- -- -- -- -- 52.77 25 -- -- -- -- -- -- -- -- -- -- -- 52.84 corn -- -- -- -- -- -- -- -- -- -- 52.83 52.85 1963 5 52.77 52.83 52.96 52.89 52.90 52.87 -- 52.75 52.57 52.55 52.57 52.75 10 52.77 52.86 52.94 52.86 52.90 52.89 52.80 52.71 -- 52.54 52.59 52.76 15 52.77 52.88 52.92 52.88 52.88 52.87 52.71 52.68 -- 52.53 52.59 52.79 20 52.82 52.91 52.92 52.91 52.81 52.83 -- 52.67 -- 52.55 52.63 52.80 25 52.88 52.93 -- 52.95 52.85 52.84 -- 52.64 52.62 52.57 52.66 52.77 eom 52.82 52.94 52.89 52.92 52.84 -- 52.77 52.59 52.58 52.55 52.71 52.73 1964 5 52.72 52.72 52.80 52.85 -- 52.90 52.68 52.61 52.68 52.62 -- -- 10 52.70 52.74 52.83 52.83 -- 52.87 52.66 52.63 52.65 52.61 -- -- 15 52.69 52.74 52.86 -- -- 52.79 52.65 52.64 52.69 -- -- -- 20 52.67 52.72 52.85 -- -- 52.77 52.66 52.68 52.64 -- -- -- 25 52.64 -- 52.83 -- 52.88 52.81 -- 52.65 52.57 -- -- _- com 52.71 52.79 52.84 -- 52.9(1 52.77 -- 52.70 -- -- -- -- Water levels, in fc below land surface Water Water Water Water Date Date level Date level Date level level 54.50 Apr. 14, 1966 a 55.16 May 8, 1967 a 54.33 Oct. 13, 1964 52.35 Apr. 27, 1965 52.90 May 11 0 55.08 Tune 7 a 54.17 Oct. 20 52.90 June 21 Oct. 27 d 57.10 June 17 0 55.10 July 13 a 59.80 July 12 a 52.10 Nov. 4 0 56.50 July 21 `.) 55.70 Aug. 12 0 59.90 Aug. 8 a 59.80 0 55.13 Sept. 8 0 54.80 Sept. 11 8 60.03 Nov. 13 52.70 Aug. 18 Nov. 17 d r., 4 . 9 0 Sept. 28 054.95 Oct. 11 054.70 Oct. 13 a 60.50 Dec. 2 53.05 Oct. 28 ° 54.98 Nov. 10 59.16 Nov. 14 a 63.65 Nov. 29 0 54.72 Dec. 7 0 54.68 Dec. 12 59.53 Dec. 8 055.50 055.90 Dec. 20 a 54.90 Jan. 4, 1967 a 54.42 Oct. 3, 1968 53.08 Jan. 4, 1965 Jan. 12 ° 56.15 Jan. 18, 1966 a 54.84 Feb. 7 054.55 Mar. 9 a 54.53 Mar. 29 50.70 Feb. 23 a 55.23 Apr. 15 54.83 Mar. 16 0 54.92 Apr. 5 0 54.17 a - Pumping. 156 Well 9 (43-64.45-7-94) Measuring point.--Top of instrument platform, 2.0 ft above lsd. Name.--Barren Spot-36. Land elevation.--38 ft above msl. Location.--Lat 17° 43' 00", long 64° 45' 36". Highest water level.--34.65 ft below lsd, Nov. 25, 1965. Description.--Drilled unused water-table well, cased Lowest water level.--35.01 ft below lsd, Sept. 10, 1965. 0-110, perforated 44-110 ft, open hole 110-136 ft. Records available.--Water level: May to November 1965. Depth.--136 ft. Owner .--V.I. Government. Remarks.--Recorder. Discontinued, December 1965. Aquifer.--Limey sediments of Tertiary and Quaternary age. Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (in feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1965 5 -- -- -- -- -- 34.86 -- 34.91 34.99 34.96 34.81 -- 10 -- -- -- -- -- 34.90 -- 34.94 35.01 34.86 34.83 -- 15 -- -- -- -- -- 34.90 -- 34.96 34.94 34.86 34.80 -- 20 -- -- -- -- 34.92 34.95 34.95 34.94 -- 34.91 34.76 -- 25 -- -- -- -- 34.91 34.90 34.92 34.96 -- 34.89 34.65 __ eom -- -- -- -- 34.84 34.91 34.92 34.98 34.98 34.88 34.76 -- Well 10 (43-64.48-8-68) Owner.--U.S. Government-V.I. Government. Measuring point.--Top of casing, 2.7 ft above lsd. Name.--USGS-37 (Agricultural Station). Land elevation.--75 ft above msl. Location.--Lat 17° 43' 20", long 64° 48' 14". Highest water level.--7.30 ft above lsd, Mar. 17, 1966. Description.--Drilled unused water-table well, Lowest water level.--15.38 ft above lsd, Mar. 9, 1967. diam 4-in. Records available.--Water levels: 1966-67. Depth.--22 ft. Remarks.--Measurement discontinued, March 1967. Aquifer. --Limey sediments of Tertiary and Quaternary age. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Mar. 17, 1966 7.30 July 14, 1966 10.97 Oct. 11, 1966 12.90 Jan. 4, 1967 14.00 Apr. 15 8.17 Aug. 12 11.41 Nov. 9 13.40 Feb. 7 14.80 May 11 8.92 Sept. 14 12.27 Dec. 7 13.88 Mar. 9 15.38 - - 1 Well 11 (43-64.48-1-83) Owner.--V.I. Government. Measuring point.--3.3 ft above lsd. Name.--Adventure-15. Land elevation.--80 ft above msl. Location.--Lat 17° 43' 06", long 64° 48' 45". Highest water level.--2.47 ft below lsd, Jan. 9, 1963. Description.--Drilled water-table production well, diem Lowest water level.--875.62 ft below lsd, Mar. 9, 1967. 6-in, cased 0-106, perforated 34-106 ft. Records available.--Chemical analysis: Mar. 9, 1967. Depth.--106 ft. Water levels: 1962-69. Aquifer.-- Marl of Tertiary age. Remarks. --Recorder used from November 1964 to June 1965. Measurement discontinued, July 1969. CHEMICAL ANALYSIS Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conducta nce (micromhos at 25°C) pH Temperature ( Footnote Milligrams per liter - E a,0 Manganese ( Mn ) Calcium ( Ca ) Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K) Bicarbonate ( HCO3 ) Ca rbona te ( CO3 ) Sulfate ( SO4 ) ::--0 a 8 0 - Fluoride ( F) Nitrate ( NO3 ) Orthophosphate ( PO4 ) Dissolved solids calculated Date of collection - - N U U0., 2 6 c' 8 260 1.0 2.6 -- *1,240 217 0 2,050 8.0 27 -- /tar. 9, 1967 -- 45 0.06 26 44 26 404 778 -- 84 *Residue on evaporation at 180°C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level June 13, 1962 8.06 Aug. 28, 1962 10.41 Oct. 26, 1962 7.90 Dec. 19, 1962 7.68 June 28 7.26 Sept. 5 10.52 Oct. 31 5.30 Dec. 28 7.76 July 9 7.80 Sept. 10 10.02 Nov. 7 5.90 Jan. 9, 1963 2.47 July 16 7.82 Sept. 14 10.00 Nov. 14 6.24 Jan. 16 3.35 July 24 8.68 Sept. 25 9.11 Nov. 21 6.20 Jan. 23 3.47 July 31 9.03 Oct. 4 8.20 Nov. 28 6.90 Feb. 1 4.00 Aug. 7 9.92 Oct. 9 8.54 Dec. 3 6.71 Feb. 6 4.12 Aug. 23 10.18 Oct. 16 3.43 Dec. 13 7.20 Feb. 13 4.54 Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (In feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1964 5 -- -- -- -- -- -- -- -- -- -- -- 20.91 10 -- -- -- -- -- -- -- -- -- -- 20.16 21.05 15 -- -- -- -- _ -- -- -- -- -- 20.32 21.19 20 -- -- -- -- -- -- -- -- -- -- 20.47 21.33 25 -- -- -- -- -- -- -- -- -- -- 20.68 21.47 eom -- -- -- -- -- -- -- -- -- -- 20.87 21.62 1965 5 21.80 22.69 23.49 24.31 24.95 25.23 -- -- -- -- __ __ 10 21.95 22.83 23.63 24.42 25.05 25.30 -- -- -- -- __ 15 22.08 22.97 -- 24.50 25.16 25.38 -- -- -- -- 20 22.23 23.12 -- 24.68 24.80 25.48 -- -- -- -- -- 25 22.38 23.26 -- 24.71 24.78 25.53 -- -- -- -- eom 22.53 23.35 -- 24.84 25.05 -- -- -- -- -- -- -- Water levels, in feet below land surface Water Date Date Date Date Water Water Water level level level level Aug. 18, 1965 27.41 Sept. 8, 1966 29.83 Sept. 11, 1967 40.88 Sept. 5, 1968 46.51 Sept. 28 28.07 Oct. 11 30.58 Oct. 10 41.78 Oct. 3 47.29 Oct. 29 28.64 Nov. 9 31.28 Nov. 9 41.59 Nov. 7 48.26 Nov. 30 28.93 Dec. 7 32.03 Dec. 13 42.12 Dec. 5 47.43 Dec. 20 26.24 Jan. 4, 1967 32.77 Jan. 11, 1968 42.39 Jan. 7, 1969 40.10 Jan. 18, 1966 25.17 Feb. 7 40.42 Feb. 13 43.08 Feb. 6 39.43 Feb. 23 25.32 Mar. 9 a 75.62 Mar. 14 43.93 May 7 38.36 Mar. 17 25.43 Apr. 5 a74.74 Apr. 11 44.15 June 6 22.52 Apr. 13 25.80 May 8 37.30 May 9 44.49 July 22 26.28 May 11 26.19 June 7 39.33 June 5 45.09 July 14 28.27 July 11 36.00' July 10 46.05 Aug. 12 29.15 Aug. 14 39.72 Aug. 5 46.36 a - Pumping. Well 12 (43-64.48-9-83) Owner.--U.S. Government-V.I. Government. Measuring point.--Top of instrument platform, 2.1 ft above Name.--USGS-38 (Estate Adventure). lsd Location.--Lat 17° 43' 08", long 64° 48' 40". Land elevation.--80 ft above msl. Description.--Drilled unused water-table well, diam Highest water level.--20.37 ft above lsd, Nov. 15, 1969. 4-in, cased 0-50, perforated 30-50, open hole Lowest water level.--Dry (well plugged at 46.8 ft). 50-97 ft (now plugged at 46.8 ft). Records available.--Water levels : 1966-69. Depth.--97 ft. Remarks. --Affected by nearby pumpage. Recorder. Aquifer. --Limey sediments of Tertiary and Quaternary age. Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (in feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1966 5 -- -- -- 29.93 30.03 30.42 31.21 -- -- 33.08 34.75 34.59 10 -- -- -- 30.28 30.09 30.66 31.58 -- 32.85 33.48 33.20 -- 15 -- -- -- 30.02 30.24 31.00 -- -- 32.84 34.35 34.26 -- 20 -- -- 29.98 -- 30.25 30.90 -- -- 32.86 34.21 34.25 -- 25 -- -- 29.95 29.96 30.29 31.29 -- -- 33.37 34.45 34.31 -- eom -- -- 29.93 29.98 30.35 31.22 -- -- 33.08 34.47 34.49 -- 1967 5 35.69 e38.70 40.77 41.62 41.97 42.15 40.07 41.63 41.55 43.37 43.25 43.44 10 35.54 39.31 40.92 41.73 41.94 42.12 -- 41.84 41.81 43.49 43.17 43.33 15 36.14 39.75 41.09 41.89 41.95 42.05 41.15 42.89 42.36 43.43 43.21 42.68 20 e36.40 40.08 41.25 41.96 41.57 39.80 40.64 42.97 42.77 43.64 43.08 43.01 25 0 37.10 40.41 41.31 41.97 41.71 39.80 41.28 42.35 42.99 43.39 41.11 42.27 eom e37.97 40.58 41.52 42.00 42.00 39.87 41.45 41.82 43.13 43.14 42.30 43.72 1968 5 10 15 20 25 43.97 44.23 44.33 44.56 44.59 44.70 44.89 45.35 45.31 45.61 45.91 45.95 45.98 46.16 46.48 46.33 46.22 45.65 45.97 45.77 46.39 46.53 46.63 46.71 46.72 46.74 46.74 f f f f f f f f f f f f f f f f f f f f 46.67 46.18 f f f f f f 44.20 44.62 43.96 44.16 44.20 eom 44.34 45.68 46.44 45.95 46.73 f f f f f 46.52 43.65 1969 5 10 15 43.52 43.11 42.98 43.00 42.95 42.94 42.88 42.84 -- 42.21 42.09 42.09 -- 35.90 35.49 -- 25.44 27.17 28.41 -- -- -- -- -- -- -- -- -- -- -- 21.37 21.77 20.37 -- -- -- 20 43.00 42.97 -- 42.07 34.23 27.27 -- 29.44 -- 24.28 -- -- 25 eom 43.02 43.01 42.99 42.98 42.28 42.24 -- -- 22.12 -- 27.95 27.78 -- -- -- -- 28.95 26.13 22.96 22.03 -- -- -- -- e - Estimated. f - Dry. 159 Well 13 (41-64.48-2-07) Owner . --V . I. Government. Measuring point.--Top of instrument platform, 1.7 ft above lsd. Name . --Airport-39. Land elevation.--35 ft above msl. Location.--Lat 17° 41' 59", long 64° 48' 19". Highest water level.--29.30 ft below lsd, Nov. 16, 1962. Description.--Drilled unused water-table well, diam Lowest water level.--36.63 ft below lsd, June 27, 1962. 8-in, cased 0-110, perforated 58-110. Records available.--Water levels: 1962-69. Depth.--110 ft. Remarks.--Recorder used from May 1963. Aquifer.--Marl and limestone of Tertiary age. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level June 27, 1962 36.63 Sept. 13, 1962 30.68 Dec. 4, 1962 30.50 Mar. 6 30.68 July 2 30.92 Sept. 18 30.66 Dec. 12 30.50 Mar. 13 30.90 July 10 30.94 Sept. 27 30.30 Dec. 20 30.45 Mar. 21 30.65 July 17 30.96 Oct. 2 30.30 Jan. 4, 1963 30.39 Mar. 27 30.67 July 24 30.98 Oct. 10 30.35 Jan. 10 30.08 Apr. 5 30.67 July 31 30.94 Oct. 26 30.20 Jan. 17 30.16 Apr. 11 30.58 Aug. 7 30.94 Nov. 2 30.29 Jan. 24 30.29 Apr. 22 30.70 Aug. 14 31.01 Nov. 5 30.20 Jan. 29 30.28 May 2 30.70 Aug. 21 31.01 Nov. 16 29.30 Feb. 6 30.40 May 16 30.65 Aug. 27 31.00 Nov. 21 30.40 Feb. 14 30.50 May 27 30.60 Sept. 6 30.85 Nov. 29 30.48 Feb. 27 30.55 Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (in feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1963 5 10 15 20 25 eom -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30.66 30.70 30.73 30.74 30.74 30.75 30.77 30.77 30.76 30.67 30.63 e30.63 30.65 30.55 30.51 30.51 30.51 30.51 30.40 30.38 30.37 30.39 30.42 30.47 30.42 30.39 30.42 -- 30.48 30.49 30.48 30.52 30.55 30.58 30.60 30.61 30.65 30.70 30.71 30.74 30.78 30.76 30.73 1964 5 10 15 20 25 Corn 30.73 30.69 -- 30.68 -- -- -- -- -- -- 30.86 30.89 30.91 30.93 30.95 30.90 30.89 30.91 30.94 30.96 30.94 e 30.98 30.98 31.00 -- -- -- -- 31.10 31.12 31.13 31.13 31.06 31.03 31.08 31.05 30.96 30.91 30.88 30.91 30.97 31.01 31.04 31.07 31.09 31.12 31.08 31.02 30.98 30.98 31.03 31.00 30.89 30.87 30.87 30.90 30.97 31.02 31.04 31.08 31.05 31.09 31.11 31.10 31.07 31.08 31.12 31.17 31.15 31.13 31.15 31.20 1965 5 10 15 20 25 corn 31.28 31.27 31.30 31.33 31.34 31.41 31.42 31.40 31.41 31.41 31.40 31.44 31.44 31.43 31.48 31.47 31.49 31.45 31.36 31.34 31.31 31.30 31.11 31.01 31.05 31.12 31.13 31.19 31.21 31.19 31.19 31.16 -- 31.23 31.25 31.27 31.29 31.32 31.38 31.34 31.33 31.32 31.34 31.37 31.38 31.33 31.33 31.34 31.36 31.36 31.32 -- -- 31.31 31.37 31.21 31.24 31.22 31.16 31.15 -- -- -- -- -- 31.00 31.05 31.10 30.82 30.82 30.90 30.76 31.44 31.29 31.40 31.41 -- 31.25 31.29 5 30.80 31.04 31.23 31.27 31.36 31.33 -- 31.46 31.24 31.38 31.40 -- 31.22 -- 10 30.89 31.11 31.17 31.42 31.41 31.23 31.24 -- 15 30.87 31.21 31.22 31.39 31.39 31.47 31.20 31.44 31.23 31.38 31.33 31.25 31.24 -- '0 31.24 31.24 31.38 31.35 31.24 31.41 31.32 31.28 31.28 -- 25 30.98 31.22 31.23 31.39 31.36 31.35 corn 30.98 31.25 31.28 31.42 31.37 31.30 31.33 31.40 31.30 31.25 31.27 -- -- -- -- -- -- -- -- 1967 5 31.38 31.50 -- 31.62 -- 31.59 31.30 -- 31.32 31.16 31.15 -- 10 31.40 31.54 31.55 31.63 31.63 31.58 31.35 -- -- 31.17 31.18 -- 15 31.46 31.55 -- 31.64 31.65 31.49 -- 31.35 31.26 31.11 31.14 31.30 20 31.46 31.54 -- 31.59 31.60 31.44 -- 31.38 31.27 31.11 31.15 31.38 25 31.50 31.50 -- 31.59 31.60 31.45 -- 31.36 31.30 31.18 -- 31.42 eom 31.48 -- -- 31.58 31.61 31.34 -- 31.37 31.29 31.16 -- 31.41 1968 5 31.46 31.65 31.78 -- 31.87 31.89 31.85 31.80 31.63 31.51 -- h 31 .47 10 31 .52 e 31.70 31.82 -- 31.90 31.92 31.83 31.65 31.64 31.49 31.56 -- 15 31.53 31.73 31.83 31.84 31.90 31.94 31.78 31.58 31.63 31.52 31.55 -- 20 31.55 31.74 -- 31.82 31.90 31.96 31.77 31.62 -- 31.53 31.47 -. 25 31.56 31.76 -- 31.77 31.89 31.98 31.80 31.61 -- 31.49 31.48 31.51 eom 31.61 31.76 -- 31.82 31.90 31.94 31.80 31.59 -- 31.53 31.47 -- 1969 5 31.47 31.55 31.49 31.66 -- 30.14 30.76 30.84 30.85 -- 30.66 30.57 10 31.45 31.55 31.47 31.71 31.19 30.37 -- 30.88 30.90 -- 30.66 30.57 15 31.39 31.56 -- 31.73 31.20 30.53 -- 30.83 30.92 -- 30.67 30.57 20 31.42 31.56 -- 31.74 31.12 30.60 -- 30.82 e 30.89 30.65 -- 30.58 25 31.46 31.56 31.65 -- 29.85 30.65 . 30.83 30.84 -- 30.62 30.57 30.61 corn 31.49 31.58 31.66 -- 29.82 30.72 30.80 30.83 -- 30.65 30.58 30.62 h - Tape measurement. e - Estimate. Well 14 (42-64.48-7-100) Measuring point.--Top of instrument platform, 1.1 ft above lsd. Owner .--V . I. Government. Name.--Airport-34. Land elevation.--16 ft above msl. Location.--Lat 17° 42' 01", long 64° 48' 02". Highest water level.--8.69 ft above lsd, Nov. 2, 1962. Description.--Drilled water-table production well, diam Lowest water level .--15.50 ft below lsd, May 25, 1964. 6-in, cased 0-80, perforated 19-80. Records available.--Water levels: 1962-1964. Remarks.--Recorder used between November 1962 and May 1963. Depth.--80 ft. Aquifer.--Marl and limestone of Tertiary age. Measurement discontinued, May 1964. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level 12.87 Oct. 26, 1962 11.98 June 4, 1962 13.45 July 24, 1962 13.00 Sept. 6, 1962 12.92 Sept. 13 12.60 Nov. 2 8.69 June 13 13.26 July 31 13.20 Aug. 7 13.01 Sept. 18 12.58 Nov. 5 11.90 June 19 July 2 12.75 Aug. 14 13.05 Sept. 27 12.45 Nov. 16 12.80 13.11 Oct. 2 12.30 Nov. 21 11.90 July 10 12.77 Aug. 21 Oct. 10 12.32 July 17 12.82 Aug. 27 13.07 Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (in feet) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 196 5 -- -- -- -- -- -- -- -- -- -- -- 12.38 10 -- -- -- -- -- -- -- -- -- -- -- 12.43 15 __ __ -- -- -- -- -- -- -- -- 12.37 20 -- -- -- -- -- -- -- -- -- -- -- 12.39 25 __ __ __ __ __ __ -- -- -- -- -- 12.41 eom -- -- -- -- -- -- -- -- -- 12.30 12.43 1963 5 11.61 -- 12.42 12.73 12.79 -- -- -- -- -- -- -- 10 11.63 -- 12.47 12.65 12.83 -- -- -- -- -- -- -- 15 11.73 -- 12.51 12.67 12.84 -- -- -- -- -- -- 20 11.84 12.25 12.57 12.71 -- -- -- -- -- -- -- 25 11.93 12.32 -- 12.74 -- -- -- eom -- 12.36 12.70 12.78 -- -- -- -- -- -- -- -- 161 Water levels, in feet below land surface Date Water level Date Water level Date Water level Date Water level May 20, 1963 12.47 July 10, 1963 12.75 Sept. 6, 1963 12.20 Feb. 18, 1964 3 13.50 May 27 12.38 July 16 12.60 Sept. 16 12.20 Mar. 10 a 13.10 June 4 12.60 July 29 12.60 Sept. 25 12.50 Mar. 18 a 13.20 June 12 June 20 12.85 10.00 Aug. 6 Aug. 14 12.20 12.35 Oct. 1 Oct. 9 12.20 12.30 Apr. 9 Apr. 27 13.50 a 13.70 June 27 12.87 Aug. 23 12.40 Feb. 11, 1964 a 13.20 May 25 a 15.50 - _ a - Pumping. Well 15 (42-64.47-17-96) Owner.--U.S. Government-V.I. Government. Measuring point.--Top of 4-in casing, 0.05 ft above lsd. Name.--USGS-32A (Airport). Land elevation.--16 ft above msl. Location.--Lat 17° 42' 05", long 64° 47' 25". Highest water level.--11.70 ft below lsd, Jan. 4, 1967. Description.--Drilled unused water-table well, diam Lowest water level.--14.24 ft below lsd, Mar. 14, 1968. 4-in, cased 0-120, perforated 20-120, open hole Records available.--Chemical analysis: Feb. 16, 1966. 120-157 ft. Water levels: 1966-68. Depth.--157 ft. Remarks. --Well plugged. Measurement discontinued, March Aquifer. --Limey sediments of Tertiary and Quaternary age. 1968. CHEMICAL ANALYSIS Hardness as CaCO3 Ca lcium, magnesium Non- carbonate Specific conductance (micromhos at 25°C) Hd Milligrams per liter Temperature (°C) Footnote Date of llection co Discha rge (gpm ) Silica ( S102 ) - - z o Manganese ( Mn ) Fluoride ( F ) Nitrate ( NO3 ) Orthophospha te ( PO4 ) Dissolved solids calcula ted Magnesium ( Mg ) Sodium ( Na ) Pota ssium ( K Bicarbonate ( HCO3 ) Ca rbona te ( 003 ) Sulfate ( SO, ) To' ."---;0 0- - a)-o 8 .-' u E o u To' _ -- *1,880 234 0 3,180 8.0 27 -- 'el). 16, 1966 -- 34 0.01 0.00 36 35 635 592 0 212 638 0.8 9.8 *Residue on evaporation at 180°C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Mar. 17, 1966 12.15 Oct. 12, 1966 12.33 May 8, 1967 12.99 Nov. 10, 1967 13.81 Apr. 11 12.70 Dec. 7 12.33 June 7 13.13 Dec. 12 13.60 June 9 12.68 Jan. 4, 1967 11.70 July 12 13.53 Jan. 11, 1968 13.65 12.67 Aug. 8 13.69 Feb. 13 14.13 July 14 12.28 Feb. 8 Sept. 11 13.84 Mar. 14 14.24 Aug. 12 12.43 Mar. 9 12.75 12.79 Oct. 10 13.78 Sept. 8 12.45 Apr. 5 -- 162 Well 16 (42-64.47-16-97) Owner.--U.S. Government-V.I. Government. Name.--USGS-31 (Airport). Location.--Lat 17° 42' 06", long 64° 47' 20". Description.--Drilled unused water-table well, diam 4-in, cased 0-115, perforated 15-115, open hole 115-137 ft. Depth.--137 ft. Aquifer.--Alluvium of Quaternary age. Measuring point.--Top of 4-in casing, 0.1 ft above lsd. Land elevation.--17 ft above msl. Highest water level.--12.80 ft below lsd, Jan. 7, 1967. Lowest water level.--16.19 ft below lsd, July 10, 1968. Records available.--Chemical analysis: Feb. 3, 1966. Water level: 1966-69. Remarks.--Measurement discontinued, July 1969. CHEMICAL ANALYSIS X0. Temperature ( °C) Footnote I Specific conducta nce (micromhos at 25°C) Milligrams per liter . Hardness - - E 73 c 0. - c _ 0, - - - ,-,-) ...a nr, ...,,, .0 as CaCO3 0, 2 a - s'"-- (i) - L,_. ,-4 o ,. 'Z' 2.,, 0O o ...... 0 .z ,y, - ..., 0 (-)- - f.,),..- 2.: 0 w - , i't: . (1, 0 - E g 6 2 7, - a) •a)0 o Ar a) 6 -, , 2 a) E .ct 0 10 > 0 in 2 3 -0, -;. V) Era - 0 0 . 0 0 ...., ..0 V o. a. - .p.-0 2.0 .:J:! 74a) .T._.0 0 0, .4 -t.' ,o . . 0 .i-) 2 a . a0 a0 0 16:Z' ..0 ij ! IT?' - F8 0 .0- o - Cl) ,,,,,ty,c o, 0 . , -5 v.) o 2 v) o Fr!, - t ' 0 a0 a .-. ,„a ....,. A E u 0 ii) Fl z 29 43 543 524 8 179 560 0.5 11 -- *1,990 250 0 3,430 8.328 'eb. 3, 1966 -- 37 0.000.00 *Residue on evaporation at 180°C. Water levels, in feet below land surface Water Water Water Water Date Date Date Date level level level level Mar. 17, 1966 13.15 Mar. 9, 1967 13.50 Jan. 11, 1968 15.39 Nov. 7, 1968 15.53 May 11 13.66 Apr. 5 13.59 Feb. 13 15.67 Dec. 5 15.19 June 9 13.58 May 8 13.82 Mar. 14 15.81 Jan. 7, 1969 14.90 July 14 12.90 June 7 14.05 Apr. 11 15.97 Feb. 6 15.23 Aug. 12 13.40 July 11 14.75 May 9 16.06 May 7 15.26 Sept. 8 13.45 Aug. 8 15.01 June 5 16.10 June 6 13.93 Oct. 12 13.78 Sept. 11 15.31 July 10 16.19 July 22 13.32 Dec. 7 13.26 Oct. 10 15.25 Aug. 7 16.09 Jan. 7, 1967 12.80 Nov. 10 15.25 Sept. 5 15.80 Feb. 7 13.49 Dec. 12 15.33 Oct. 3 15.64 _ - 163 Well 17(43-64.52-3-45) Owner.--V.I. Government. Name.--Mahogany Road-3. Location.--Lat 17° 43' 36", long 64° 52' 32". Description.--Drilled unused water-table well, diem 6-in, cased 0-104, perforated 64-104. Depth.--104 ft. Aquifer.--Alluvium of Quaternary age and volcanic rock of Cretaceous age. Measuring point.--Top of instrument platform, 2.57 ft above lsd. Land elevation.--70 ft above msl. Highest water level.--26.24 ft below lsd, Dec. 16, 1969. Lowest water level.--74.31 ft below lsd, Mar. 29, 1965. Records available.--Water levels: 1964-69. Remarks.--Affected by nearby pumpage. Recorder. Highest water level below land surface on the 5th, 10th, 15th, 20th, 25th, and end of each month from recorder graph (in feat) Day Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1964 5 71.72 72.21 72.66 73.02 73.36 73.56 10 70.09 71.80 72.28 72.74 73.11 73.43 73.60 15 70.16 71.86 72.35 72.80 73.10 73.51 73.59 20 70.23 71.96 72.42 72.95 73.19 73.48 73.62 25 71.59 c 72.51 72.86 73.25 73.54 73.66 corn 71.68 72.15 72.60 72.94 73.31 73.60 73.65 1965 5 74.00 74.16 74.24 73.80 73.70 73.91 73.91 73.96 73.51 73.62 10 74.03 74.14 74.13 73.65 73.72 73.93 73.95 73.99 73.49 73.70 15 73.73 74.03 74.21 74.09 73.60 73.97 73.99 73.99 73.46 73.41 20 73.77 74.06 74.26 74.04 73.24 73.84 73.94 73.96 73.48 72.92 25 73.85 74.04 74.28 73.69 73.91 73.95 73.95 73.50 72.47 eom 73.93 74.06 74.30 73.86 73.70 73.91 73.91 73.93 73.57 73.53 73.59 71.95 1966 5 71.67 -- -- 58.16 60.08 62.61 65.63 67.86 69.33 70.22 70.34 70.47 10 71.52 -- -- 58.53 60.42 63.16 66.09 68.18 69.51 70.31 70.38 70.15 15 71.30 -- -- 58.86 60.76 63.66 66.50 68.46 69.69 69.85 70.37 70.35 20 70.82 -- 57.54 59.19 61.13 64.19 66.86 68.68 69.83 70.40 70.44 70.31 25 70.17 -- 57.61 59.47 61.56 64.70 67.22 68.90 69.97 70.38 70.47 70.23 eom -- -- 57.86 59.78 62.09 65.18 67.61 69.18 70.10 70.34 70.45 e70.14 1967 5 70.08 69.41 69.21 69.59 69.85 70.61 70.82 71.44 71.83 71.96 72.06 72.01 10 70.00 69.35 69.26 69.65 69.99 70.64 70.93 71.51 -- 71.98 71.92 72.00 15 69.93 69.31 69.36 69.72 70.12 70.66 71.04 71.59 71.85 71.93 -- 72.05 20 69.80 69.27 69.44 69.81 70.23 70.71 71.14 71.70 71.89 71.96 -- 72.14 25 69.72 69.27 69.48 69.82 70.33 70.81 71.26 71.77 71.90 72.02 72.25 eom 69.58 69.21 69.50 69.80 70.47 70.84 71.34 71.85 71.91 72.06 72.34 196 5 72.43 72.73 73.21 73.15 73.48 73.68 73.52 73.37 73.20 72.96 0 72.93 72.73 10 73.31 73.22 73.53 73.74 e73.48 73.22 73.19 72.95 72.88 72.77 15 72.55 73.30 73.23 73.59 73.76 73.47 -- 72.93 72.62 72.50 20 72.64 72.88 73.34 73.22 73.61 73.70 73.45 73.12 73.04 72.79 72.86 25 72.70 72.97 73.25 73.38 73.57 73.70 73.40 73.15 72.95 72.75 72.84 r • cm 72.67 73.06 73.28 73.40 73.66 73.61 73.42 73.16 72.93 72.76 72.76 196 - S 72.71 72.92 72.88 72.69 39.89 44.22 e 46.84 45.54 0 27.19 10 72.75 72.89 72.79 0 57.18 40.55 44.77 45.05 15 72.76 72.91 41.44 45.35 € 46.89 20 72.94 72.87 0 72.71 h70.38 42.26 45.92 46.73 43.32 26.85 25 72.83 72.88 72.67 -- 39.88 42.95 46.25 46.45 35.20 27.76 corn 72.89 72.98 72.65 39.26 43.66 46.57 45.96 30.86 29.37 e- Estimate h- Tape measurement. .%1-,...; 2 , 4:1;,T,'• .. :. z.y,t10,1310„,"1-,,fiA-1-.-f-n4f-.41.-.w'.9ttiv... ,-- ,-•••,- • ... ..' ••:•.' 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