Appendix C – Trends Plots STXEEMP
Appendix C Data Trends JULY 31, 2016 Contents St. Croix East End Marine Park (STXEEMP) ............................................................................ 3 Figures Figure C-1. DO at ALL assessment units, STXEEMP, St. Croix ............................................. 3 Figure C-2. Enterococcus at ALL assessment units, STXEEMP, St. Croix ............................... 4 Figure C-3. Fecal Coliform at ALL assessment units, STXEEMP, St. Croix ............................ 5 Figure C-4. pH at ALL assessment units, STXEEMP, St. Croix .............................................. 6 Figure C-5. DO at ALL North Side STXEEMP assessment units, St. Croix ............................. 7 Figure C-6. Enterococcus at ALL North Side STXEEMP assessment units, St. Croix ............... 8 Figure C-7. Fecal Coliform at ALL North Side STXEEMP assessment units, St. Croix ............ 9 Figure C-8. pH at ALL North Side STXEEMP assessment units, St. Croix ............................ 10 Figure C-9. Turbidity at ALL North Side STXEEMP assessment units, St. Croix ................... …
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Appendix C Data Trends JULY 31, 2016 Contents St. Croix East End Marine Park (STXEEMP) ............................................................................ 3 Figures Figure C-1. DO at ALL assessment units, STXEEMP, St. Croix ............................................. 3 Figure C-2. Enterococcus at ALL assessment units, STXEEMP, St. Croix ............................... 4 Figure C-3. Fecal Coliform at ALL assessment units, STXEEMP, St. Croix ............................ 5 Figure C-4. pH at ALL assessment units, STXEEMP, St. Croix .............................................. 6 Figure C-5. DO at ALL North Side STXEEMP assessment units, St. Croix ............................. 7 Figure C-6. Enterococcus at ALL North Side STXEEMP assessment units, St. Croix ............... 8 Figure C-7. Fecal Coliform at ALL North Side STXEEMP assessment units, St. Croix ............ 9 Figure C-8. pH at ALL North Side STXEEMP assessment units, St. Croix ............................ 10 Figure C-9. Turbidity at ALL North Side STXEEMP assessment units, St. Croix ................... 11 Figure C-10. DO at ALL South Side STXEEMP assessment units, St. Croix ........................... 12 Figure C-11. pH at ALL South Side STXEEMP assessment units, St. Croix ............................ 13 Figure C-12. Turbidity at ALL South Side STXEEMP assessment units, St. Croix ................... 14 Figure C-13. Turbidity at Punnett Bay (STC-33), STXEEMP, St. Croix ................................... 15 Figure C-14. DO at Tamarind Reef Lagoon (STC-35), STXEEMP, St. Croix........................... 16 Figure C-15. Fecal Coliform at Tamarind Reef Lagoon (STC-35), STXEEMP, St. Croix ......... 17 Figure C-16. Enterococcus at Green Cay Beach (STC-36), STXEEMP, St. Croix ..................... 18 Figure C-17. Turbidity at Green Cay Beach (STC-36), STXEEMP, St. Croix ........................... 19 Figure C-18. DO at Southgate, offshore (STC-37), STXEEMP, St. Croix ................................. 20 Figure C-19. Enterococcus at Southgate, offshore (STC-37), STXEEMP, St. Croix .................. 21 Figure C-20. Fecal Coliform at Southgate, offshore (STC-37), STXEEMP, St. Croix ................ 22 Figure C-21. Turbidity at Southgate, offshore (STC-37), STXEEMP, St. Croix ........................ 23 Figure C-22. DO at Teague Bay (STC-39), STXEEMP, St. Croix ............................................ 24 Figure C-23. Fecal Coliform at Teague Bay (STC-39), STXEEMP, St. Croix ........................... 25 Figure C-24. pH at Teague Bay (STC-39), STXEEMP, St. Croix ............................................. 26 Figure C-25. Turbidity at Teague Bay (STC-39), STXEEMP, St. Croix ................................... 27 Figure C-26. Fecal Coliform at Teague Bay Backreef (STC-40), STXEEMP, St. Croix ............. 28 Figure C-27. pH at Teague Bay Backreef (STC-40), STXEEMP, St. Croix ............................... 29 Figure C-28. Turbidity at Teague Bay Backreef (STC-40), STXEEMP, St. Croix ...................... 30 Figure C-29. DO at Grapetree Bay (STC-46), STXEEMP, St. Croix ........................................ 31 Figure C-30. Enterococcus at Turner Hole Backreef (STC-47), STXEEMP, St. Croix ............... 32 Figure C-31. Turbidity at Turner Hole Backreef (STC-47), STXEEMP, St. Croix ..................... 33 St. Croix East End Marine Park (STXEEMP) Figure C-1. DO at ALL assessment units, STXEEMP, St. Croix 1 2 1 3 1 2 1 3 2 2 3 6 4 5 10 6 1 2 4 3 7 3 3 1 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 14% 33% 17% 75% 33% 33% 25% 30% 40% 67% 0 10 20 30 40 50 60 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 27 17 11 2 17 14 8 13 27% 19% 15% 50% 19% 7% 11% 7% 10 4 2 2 4 1 1 1 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 14 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 4 3 2 3 1 3 4 2 3 3 3 12 7 7 14 9 7 24 5 3 15 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 57% 20% 22% 18% 10% 11% 44% 40% 17% 0 2 4 6 8 10 12 14 16 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 15 2 1 1 1 3 2 82 4 2 3 4 3 2 1 3 2 3 15% 33% 33% 25% 20% 50% 50% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 14 16 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: DO (mg/L) Figure C-2. Enterococcus at ALL assessment units, STXEEMP, St. Croix 1 1 13 4 5 3 8 16 28 13 5 1 2 6 15 48 54 54 55 53 55 46 42 45 35 11 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 14% 6% 21% 7% 8% 5% 13% 26% 40% 22% 13% 8% 0 500 1,000 1,500 2,000 2,500 3,000 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 167 62 56 47 72 37 29 51 21% 21% 10% 10% 15% 5% 19% 9% 44 16 6 5 13 2 7 5 0 0 0 1 1 2 3 5 7 10 41 0 200 400 600 800 1,000 1,200 1,400 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 5 2 7 10 10 13 2 10 12 6 17 4 45 37 47 44 40 48 43 40 50 40 37 50 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 10% 5% 13% 19% 20% 21% 4% 20% 19% 13% 31% 7% 0 200 400 600 800 1,000 1,200 1,400 1,600 1,800 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 54 5 1 5 3 5 6 4 2 8 5 354 21 20 21 19 11 12 15 17 12 19 13% 19% 5% 19% 14% 31% 33% 21% 11% 40% 21% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 500 1,000 1,500 2,000 2,500 3,000 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Enterococcus (MPN/100 mL) Figure C-3. Fecal Coliform at ALL assessment units, STXEEMP, St. Croix 1 1 1 2 1 3 7 8 6 8 5 4 4 6 4 9 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 14% 17% 10% 100% 100% 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 22 8 6 2 9 5 3 9 4% 20% 14% 10% 10% 1 2 1 1 1 0 0 0 1 1 2 3 5 7 10 41 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 2 2 1 1 1 9 4 3 13 7 1 10 4 1 11 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 18% 17% 50% 8% 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 5 1 42 4 1 1 5 3 4 1 1 2 11% 20% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 500 1,000 1,500 2,000 2,500 3,000 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Fecal (MPN/100 mL) Figure C-4. pH at ALL assessment units, STXEEMP, St. Croix 4 1 4 1 1 2 3 5 3 2 2 9 6 1 5 10 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 67% 10% 100% 50% 17% 100% 100% 100% 100% 0 2 4 6 8 10 12 14 16 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 15 9 2 7 7 3 7 25% 25% 67% 100% 46% 22% 40% 22% 5 3 4 1 6 2 2 2 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 1 3 2 4 2 5 1 1 6 1 2 9 1 4 6 5 4 8 3 2 5 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 33% 25% 67% 40% 29% 38% 25% 33% 55% 0 2 4 6 8 10 12 14 16 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 20 2 1 1 1 35 1 1 2 4 1 3 2 1 36% 67% 33% 100% 50% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 14 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: pH Figure C-5. DO at ALL North Side STXEEMP assessment units, St. Croix 1 5 3 5 4 1 3 1 2 10 19 10 16 21 15 5 8 10 9 18 5 11 6 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 5% 33% 16% 50% 29% 10% 14% 8% 25% 0 10 20 30 40 50 60 70 80 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 70 52 31 3 31 24 18 29 18% 2% 11% 24% 4% 5% 3% 15 1 4 10 1 1 1 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 14 16 18 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 5 1 2 7 1 2 9 2 4 6 14 36 10 20 34 20 7 46 13 12 40 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 26% 3% 9% 17% 5% 4% 41% 14% 9% 0 5 10 15 20 25 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 18 2 1 2 1 7 2 188 13 3 2 9 15 12 4 5 7 9% 13% 25% 50% 10% 32% 14% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 14 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: DO (mg/L) Figure C-6. Enterococcus at ALL North Side STXEEMP assessment units, St. Croix 2 7 1 3 3 8 17 30 7 3 5 19 35 111 143 150 157 154 157 145 149 140 74 22 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 5% 6% 1% 2% 2% 5% 10% 17% 5% 4% 0 200 400 600 800 1,000 1,200 1,400 1,600 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 479 166 154 129 205 105 82 141 7% 7% 1% 4% 6% 3% 7% 2% 37 12 2 6 12 3 6 3 0 0 0 1 1 2 3 5 7 10 41 0 100 200 300 400 500 600 700 800 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 7 2 2 4 9 12 4 5 9 4 20 3 119 101 140 123 124 139 109 119 134 118 113 122 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 6% 2% 1% 3% 7% 8% 4% 4% 6% 3% 15% 2% 0 200 400 600 800 1,000 1,200 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 44 4 1 4 1 1 5 4 1 8 8 982 56 47 61 49 46 41 39 44 41 55 4% 7% 2% 6% 2% 2% 11% 9% 2% 16% 13% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 200 400 600 800 1,000 1,200 1,400 1,600 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Enterococcus (MPN/100 mL) Figure C-7. Fecal Coliform at ALL North Side STXEEMP assessment units, St. Croix 1 2 1 2 10 20 20 18 20 13 10 5 9 10 20 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 5% 13% 5% 100% 0 100 200 300 400 500 600 700 800 900 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 53 29 23 15 10 5 20 2% 9% 6% 5% 1 3 1 1 0 0 0 1 1 2 3 5 7 10 41 0 100 200 300 400 500 600 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 2 2 2 5 27 5 10 35 15 21 11 4 22 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 7% 9% 33% 0 100 200 300 400 500 600 700 800 900 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 5 1 102 10 5 15 15 2 6 5% 9% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 50 100 150 200 250 300 350 400 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Fecal (MPN/100 mL) Figure C-8. pH at ALL North Side STXEEMP assessment units, St. Croix 6 1 10 3 1 4 5 11 5 5 13 20 15 5 13 2 21 1 3 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 32% 5% 100% 38% 7% 67% 100% 92% 63% 0 2 4 6 8 10 12 14 16 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 34 27 14 17 9 9 15 19% 21% 39% 43% 25% 31% 21% 8 7 9 13 3 4 4 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 1 5 3 9 2 9 3 1 15 2 7 26 12 16 10 4 16 8 9 15 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 13% 16% 100% 36% 17% 36% 27% 10% 50% 0 2 4 6 8 10 12 14 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 40 5 1 1 1 91 2 5 15 2 4 5 1 31% 71% 17% 33% 50% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 14 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: pH Figure C-9. Turbidity at ALL North Side STXEEMP assessment units, St. Croix 1 3 3 3 9 6 1 64 94 126 127 32 16 9 17 17 16 11 9 10 7 99 116 103 74 91 25 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 10% 15% 15% 16% 45% 40% 13% 39% 45% 55% 63% 26% 39% 0 5 10 15 20 25 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 214 86 54 47 101 63 45 89 44% 44% 38% 45% 44% 35% 38% 28% 171 68 33 39 80 34 27 34 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 14 16 18 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 61 52 49 41 32 25 31 17 31 33 68 46 28 37 66 54 74 110 52 63 92 54 16 53 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 69% 58% 43% 43% 30% 19% 37% 21% 25% 38% 81% 46% 0 5 10 15 20 25 30 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 315 11 18 21 10 21 26 19 22 12 11 485 26 14 22 23 35 29 13 23 15 14 39% 30% 56% 49% 30% 38% 47% 59% 49% 44% 44% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 5 10 15 20 25 30 35 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Turbidity (NTU) Figure C-10. DO at ALL South Side STXEEMP assessment units, St. Croix 2 2 4 4 6 8 6 2 2 2 2 8 2 6 4 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 50% 0 2 4 6 8 10 12 14 16 18 20 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 10 8 4 16 8 2 10 11% 2 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 14 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 2 2 10 4 2 10 6 2 14 8 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 17% 0 2 4 6 8 10 12 14 16 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 2 48 2 2 2 2 2 4% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 14 16 18 20 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: DO (mg/L) Figure C-11. pH at ALL South Side STXEEMP assessment units, St. Croix 1 2 1 3 6 4 6 3 1 2 7 16 54 51 47 55 54 50 45 52 45 32 12 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 13% 4% 2% 6% 12% 7% 12% 9% 8% 0 200 400 600 800 1,000 1,200 1,400 1,600 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 169 59 47 45 80 38 31 53 8% 6% 4% 4% 1% 3% 5% 14 4 2 2 1 1 3 0 0 0 1 1 2 3 5 7 10 41 0 200 400 600 800 1,000 1,200 1,400 1,600 1,800 2,000 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 4 3 3 1 1 3 3 2 5 2 42 35 48 44 41 51 41 42 48 40 40 50 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 8% 6% 7% 2% 2% 7% 6% 5% 11% 4% 0 200 400 600 800 1,000 1,200 1,400 1,600 1,800 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 13 2 1 2 3 1 1 1 3 353 19 20 24 22 12 11 16 14 16 15 4% 10% 4% 8% 20% 8% 7% 6% 17% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 500 1,000 1,500 2,000 2,500 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Enterococcus (MPN/100 mL) Figure C-12. Turbidity at ALL South Side STXEEMP assessment units, St. Croix 20 39 47 50 31 11 2 6 6 8 8 6 4 20 14 10 4 7 4 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 50% 74% 82% 93% 82% 73% 0 2 4 6 8 10 12 14 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 26 5 5 6 26 10 5 16 72% 84% 74% 71% 51% 60% 72% 56% 67 27 14 15 27 15 13 20 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 20 18 20 22 19 17 13 12 11 13 19 14 1 2 12 7 4 20 10 9 18 3 1 12 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 95% 90% 63% 76% 83% 46% 57% 57% 38% 81% 95% 54% 0 2 4 6 8 10 12 14 16 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 131 4 9 11 7 7 7 5 8 4 5 73 4 2 2 6 2 2 5 2 1 64% 50% 82% 85% 54% 78% 78% 50% 80% 80% 100% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 14 16 18 20 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Turbidity (NTU) Figure C-13. Turbidity at Punnett Bay (STC-33), STXEEMP, St. Croix 13 21 24 24 7 2 24 28 26 25 30 9 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 35% 43% 48% 49% 19% 18% 0 2 4 6 8 10 12 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 40 14 9 14 23 14 9 19 47% 46% 44% 36% 36% 22% 40% 21% 36 12 7 8 13 4 6 5 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 10 11 8 8 5 6 9 4 4 6 12 8 11 7 12 16 17 17 8 16 15 12 4 7 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 48% 61% 40% 33% 23% 26% 53% 20% 21% 33% 75% 53% 0 2 4 6 8 10 12 14 16 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 55 2 5 4 1 5 6 4 5 1 3 102 4 3 6 5 4 4 4 5 4 1 35% 33% 63% 40% 17% 56% 60% 50% 50% 20% 75% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 1 2 3 4 5 6 7 8 9 10 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Turbidity (NTU) Figure C-14. DO at Tamarind Reef Lagoon (STC-35), STXEEMP, St. Croix 1 1 1 1 1 2 2 3 2 2 4 3 1 1 1 2 4 2 2 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 25% 33% 33% 50% 33% 100% 0 10 20 30 40 50 60 70 80 90 100 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 8 7 3 2 3 1 5 27% 25% 50% 50% 3 1 2 1 0 0 0 1 1 2 3 5 7 10 41 0 5 10 15 20 25 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 2 1 1 1 2 5 1 2 6 3 6 1 1 4 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 100% 14% 14% 50% 33% 0 5 10 15 20 25 30 35 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 4 1 1 1 21 2 2 2 1 1 16% 33% 33% 50% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 14 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: DO (mg/L) Figure C-15. Fecal Coliform at Tamarind Reef Lagoon (STC-35), STXEEMP, St. Croix 1 1 2 4 4 3 4 2 2 1 1 2 4 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 33% 100% 0 200 400 600 800 1,000 1,200 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 10 5 4 3 2 1 4 9% 17% 1 1 0 0 0 1 1 2 3 5 7 10 41 0 200 400 600 800 1,000 1,200 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 1 1 1 5 1 2 7 3 4 2 4 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 20% 100% 0 200 400 600 800 1,000 1,200 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 1 1 19 2 1 3 3 1 5% 33% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 200 400 600 800 1,000 1,200 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Fecal (MPN/100 mL) Figure C-16. Enterococcus at Green Cay Beach (STC-36), STXEEMP, St. Croix 1 6 1 2 2 1 6 15 3 8 46 51 49 48 49 50 45 39 47 37 11 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 11% 12% 2% 4% 4% 2% 12% 28% 6% 0 200 400 600 800 1,000 1,200 1,400 1,600 1,800 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 156 53 50 44 65 35 29 48 9% 10% 2% 8% 10% 3% 6% 16 6 1 4 7 1 2 0 0 0 1 1 2 3 5 7 10 41 0 200 400 600 800 1,000 1,200 1,400 1,600 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 4 1 2 2 4 4 1 3 3 3 8 2 41 36 41 41 40 43 36 43 43 40 38 38 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 9% 3% 5% 5% 9% 9% 3% 7% 7% 7% 17% 5% 0 500 1,000 1,500 2,000 2,500 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 21 2 1 2 1 1 1 6 2 324 18 15 22 16 14 13 14 15 11 18 6% 10% 6% 8% 6% 7% 7% 35% 10% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 500 1,000 1,500 2,000 2,500 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Enterococcus (MPN/100 mL) Figure C-17. Turbidity at Green Cay Beach (STC-36), STXEEMP, St. Croix 6 14 20 24 10 7 31 37 34 26 27 4 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 16% 27% 37% 48% 27% 64% 0 5 10 15 20 25 30 35 40 45 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 52 18 10 14 22 14 9 20 32% 36% 38% 36% 42% 26% 40% 20% 25 10 6 8 16 5 6 5 0 0 0 1 1 2 3 5 7 10 41 0 5 10 15 20 25 30 35 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 17 8 6 5 3 1 1 4 9 16 11 6 11 15 18 19 24 16 18 17 8 3 4 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 74% 42% 29% 22% 14% 6% 5% 19% 53% 84% 73% 0 10 20 30 40 50 60 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 56 2 2 3 1 2 3 4 3 4 1 107 5 5 7 5 6 6 5 7 2 4 34% 29% 29% 30% 17% 25% 33% 44% 30% 67% 20% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 20 40 60 80 100 120 140 160 180 200 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Turbidity (NTU) Figure C-18. DO at Southgate, offshore (STC-37), STXEEMP, St. Croix 1 1 1 1 1 3 2 4 2 3 4 3 1 2 3 1 1 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 33% 25% 50% 25% 50% 75% 0 10 20 30 40 50 60 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 9 7 3 1 2 1 3 25% 25% 75% 25% 3 1 3 1 0 0 0 1 1 2 3 5 7 10 41 0 5 10 15 20 25 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 1 2 1 3 1 1 5 1 2 4 3 4 2 4 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 17% 33% 20% 100% 20% 0 5 10 15 20 25 30 35 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 5 1 2 17 1 1 2 3 1 1 23% 50% 50% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 14 16 18 20 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: DO (mg/L) Figure C-19. Enterococcus at Southgate, offshore (STC-37), STXEEMP, St. Croix 1 4 4 3 2 1 4 2 4 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 0 2 4 6 8 10 12 14 16 18 20 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 8 5 4 4 1 1 2 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 14 16 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 5 1 2 4 2 3 2 2 4 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 0 5 10 15 20 25 30 35 40 45 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 17 1 1 2 2 1 1 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 5 10 15 20 25 30 35 40 45 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Enterococcus (MPN/100 mL) Figure C-20. Fecal Coliform at Southgate, offshore (STC-37), STXEEMP, St. Croix 1 1 1 2 4 4 3 4 2 2 1 4 2 3 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 25% 33% 25% 0 100 200 300 400 500 600 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 12 5 4 3 2 1 4 29% 25% 2 1 0 0 0 1 1 2 3 5 7 10 41 0 50 100 150 200 250 300 350 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 2 1 1 4 1 2 7 3 4 3 1 5 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 33% 50% 0 100 200 300 400 500 600 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 3 19 2 1 3 4 1 1 14% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 50 100 150 200 250 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Fecal (MPN/100 mL) Figure C-21. Turbidity at Southgate, offshore (STC-37), STXEEMP, St. Croix 1 2 2 1 3 2 4 2 4 4 3 2 1 2 1 1 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 25% 50% 67% 50% 75% 100% 100% 0 20 40 60 80 100 120 140 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 6 3 3 2 2 1 3 54% 57% 25% 50% 25% 7 4 1 2 1 0 0 0 1 1 2 3 5 7 10 41 0 5 10 15 20 25 30 35 40 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 3 1 2 1 1 2 1 2 2 1 3 6 2 3 2 3 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 50% 100% 100% 14% 33% 40% 33% 100% 40% 0 50 100 150 200 250 300 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 8 1 1 2 2 1 14 1 2 2 1 36% 50% 100% 50% 50% 100% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 20 40 60 80 100 120 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Turbidity (NTU) Figure C-22. DO at Teague Bay (STC-39), STXEEMP, St. Croix 1 1 1 2 4 2 3 4 3 1 1 1 2 4 1 3 2 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 33% 25% 50% 0 10 20 30 40 50 60 70 80 90 100 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 8 7 4 5 2 2 5 11% 20% 17% 1 1 1 0 0 0 1 1 2 3 5 7 10 41 0 5 10 15 20 25 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 1 1 1 2 6 1 2 6 3 6 1 1 5 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 14% 50% 17% 0 5 10 15 20 25 30 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 2 1 25 2 1 2 2 1 7% 33% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 14 16 18 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: DO (mg/L) Figure C-23. Fecal Coliform at Teague Bay (STC-39), STXEEMP, St. Croix 1 2 4 4 4 4 3 2 1 1 2 4 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 100% 0 50 100 150 200 250 300 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 10 6 5 3 2 1 4 20% 1 0 0 0 1 1 2 3 5 7 10 41 0 50 100 150 200 250 300 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 1 1 6 1 2 7 3 4 2 1 4 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 20% 0 50 100 150 200 250 300 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 1 21 2 1 3 3 1 5% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 50 100 150 200 250 300 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Fecal (MPN/100 mL) Figure C-24. pH at Teague Bay (STC-39), STXEEMP, St. Croix 3 1 2 1 1 1 3 1 1 1 3 3 1 4 1 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 75% 25% 100% 100% 100% 100% 100% 50% 0 2 4 6 8 10 12 14 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 3 3 2 2 1 3 25% 40% 60% 67% 100% 50% 25% 1 2 3 4 1 1 1 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 1 3 1 2 1 5 1 5 2 2 1 2 1 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 17% 60% 50% 50% 100% 100% 0 2 4 6 8 10 12 14 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 12 1 11 1 2 52% 100% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: pH Figure C-25. Turbidity at Teague Bay (STC-39), STXEEMP, St. Croix 1 1 24 33 49 46 1 2 4 4 4 3 2 2 1 15 19 6 4 2 2 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 25% 33% 62% 63% 89% 92% 33% 0 2 4 6 8 10 12 14 16 18 20 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 22 8 7 3 10 6 3 11 72% 71% 53% 82% 74% 65% 73% 48% 56 20 8 14 28 11 8 10 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 14 16 18 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 17 15 12 17 14 10 10 10 13 10 17 10 1 2 9 2 7 18 6 5 9 5 6 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 94% 88% 57% 89% 67% 36% 63% 67% 59% 67% 100% 63% 0 5 10 15 20 25 30 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 99 3 6 8 4 6 6 7 8 4 4 48 4 1 2 4 6 1 2 2 67% 43% 100% 89% 67% 60% 50% 100% 89% 67% 67% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 5 10 15 20 25 30 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Turbidity (NTU) Figure C-26. Fecal Coliform at Teague Bay Backreef (STC-40), STXEEMP, St. Croix 2 4 4 4 4 3 2 1 1 2 4 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 0.0 0.1 0.1 0.2 0.2 0.3 0.3 0.4 0.4 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 10 6 5 3 2 1 4 0 0 0 1 1 2 3 5 7 10 41 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 1 6 1 2 7 3 4 2 1 4 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 0.0 0.1 0.2 0.3 0.4 0.5 0.6 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 21 2 1 3 3 1 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Fecal (MPN/100 mL) Figure C-27. pH at Teague Bay Backreef (STC-40), STXEEMP, St. Croix 1 2 1 1 1 2 2 1 3 5 3 1 4 1 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 25% 100% 100% 100% 100% 67% 100% 0 2 4 6 8 10 12 14 16 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 3 3 4 4 1 3 25% 40% 20% 43% 100% 50% 25% 1 2 1 3 1 1 1 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 14 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 1 1 1 1 2 1 3 5 2 4 1 1 2 1 2 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 100% 17% 20% 50% 50% 100% 60% 0 2 4 6 8 10 12 14 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 9 1 15 1 2 38% 100% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: pH Figure C-28. Turbidity at Teague Bay Backreef (STC-40), STXEEMP, St. Croix 1 1 16 24 29 31 11 6 2 4 4 4 3 2 2 1 22 28 28 18 29 7 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 25% 33% 42% 46% 51% 63% 28% 46% 0 5 10 15 20 25 30 35 40 45 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 48 16 11 13 24 9 11 22 44% 53% 45% 41% 44% 57% 31% 29% 38 18 9 9 19 12 5 9 0 0 0 1 1 2 3 5 7 10 41 0 5 10 15 20 25 30 35 40 45 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 17 16 16 10 8 3 7 2 5 6 19 10 4 4 10 14 18 27 13 18 22 12 1 11 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 81% 80% 62% 42% 31% 10% 35% 10% 19% 33% 95% 48% 0 5 10 15 20 25 30 35 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 81 2 5 6 4 7 4 6 1 3 106 6 2 4 7 7 6 4 6 4 2 43% 25% 71% 60% 36% 54% 50% 50% 20% 60% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 5 10 15 20 25 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Turbidity (NTU) Figure C-29. DO at Grapetree Bay (STC-46), STXEEMP, St. Croix 1 1 2 2 3 4 3 1 1 1 1 4 1 3 2 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 50% 0 2 4 6 8 10 12 14 16 18 20 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 5 4 2 8 4 1 5 11% 1 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 14 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 1 1 5 2 1 5 3 1 7 4 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 17% 0 2 4 6 8 10 12 14 16 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 1 24 1 1 1 1 1 4% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 14 16 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: DO (mg/L) Figure C-30. Enterococcus at Turner Hole Backreef (STC-47), STXEEMP, St. Croix 1 2 1 3 6 4 6 3 1 1 3 12 51 51 47 53 52 49 44 48 45 32 11 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 25% 4% 2% 6% 12% 8% 12% 9% 8% 0 200 400 600 800 1,000 1,200 1,400 1,600 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 163 56 46 45 74 36 30 49 8% 7% 4% 4% 1% 3% 6% 14 4 2 2 1 1 3 0 0 0 1 1 2 3 5 7 10 41 0 200 400 600 800 1,000 1,200 1,400 1,600 1,800 2,000 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 4 3 3 1 1 3 3 2 5 2 42 35 44 42 40 47 38 42 44 40 40 45 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 8% 7% 7% 2% 3% 7% 6% 5% 11% 4% 0 200 400 600 800 1,000 1,200 1,400 1,600 1,800 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 13 2 1 2 3 1 1 1 3 336 18 20 23 19 12 11 15 14 16 15 4% 10% 4% 10% 20% 8% 7% 6% 17% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 500 1,000 1,500 2,000 2,500 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Enterococcus (MPN/100 mL) Figure C-31. Turbidity at Turner Hole Backreef (STC-47), STXEEMP, St. Croix 20 39 47 50 31 11 1 3 3 4 4 3 2 19 13 6 3 5 2 54 38 39 42 71 58 55 40 52 40 67 77 31 45 41 32 51% 75% 89% 94% 86% 85% 0 2 4 6 8 10 12 14 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Rainfall (inches/year) Water Year Temporal (Yearly) Exceeding Non-Exceeding Total Rainfall Percent Exceedance 19 3 3 6 17 6 3 11 78% 90% 82% 71% 61% 71% 81% 65% 67 27 14 15 27 15 13 20 0 0 0 1 1 2 3 5 7 10 41 0 2 4 6 8 10 12 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Days After Rainfall Wet Number of Days After Rainfall Dry Dry Days (Days after Rainfall) Exceeding Non-Exceeding Percent Exceedance Days After Rainfall 20 18 20 22 19 17 13 12 11 13 19 14 1 1 7 5 3 13 7 8 12 3 1 7 1.4 1.3 2.8 2.9 4.0 3.0 2.9 7.6 6.1 4.6 6.4 5.8 95% 95% 74% 81% 86% 57% 65% 60% 48% 81% 95% 67% 0 2 4 6 8 10 12 14 16 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Winter Spring Summer Fall Rainfall (inches/month) Seasonal (Monthly) Exceeding Non-Exceeding Average Monthly Rainfall Percent Exceedance 131 4 9 11 7 7 7 5 8 4 5 49 3 1 1 3 2 2 4 2 1 73% 57% 90% 92% 70% 78% 78% 56% 80% 80% 100% 0.10 0.12 0.14 0.17 0.20 0.25 0.31 0.41 0.59 0.94 12.59 0 2 4 6 8 10 12 14 16 18 20 No Rain 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% Daily Rainfall (inches) Low Rainfall Depth High Wet Days (Rainfall Depth) Exceeding Non-Exceeding Percent Exceedance Daily Rainfall Y-Axis: Turbidity (NTU)