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Attachment B Water Quality Duration Curves for the Lower Eel River Watershed

Analysis of water quality data from multiple sites across the Eel River to understand variations during different flow and moisture conditions from 1991-2001. |

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Attachment B Water Quality Duration Curves for the Lower Eel River Watershed

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  1. Attachment B Water Quality Duration Curves for the Lower Eel River Watershed

  2. Eel River at SR 67 Bridge Fixed Station SiteWQ Duration Curve (1991-2001 Monitoring Data)Site: #31 (WWE090-0001) Low Flows High Flows Moist Conditions Mid-range Flows Dry Conditions Office of Water Quality Total Maximum Daily Load Geometric Mean of the 2001 Data = 639.80 IDEM Data & USGS Gage Duration Interval 1,208 square miles

  3. Eel River Including Connelly DitchWQ Duration Curve (1996 & 2001 Monitoring Data)Site: #14 (WWE090-0004) High Flows Moist Conditions Dry Conditions Low Flows Mid-range Flows Office of Water Quality Total Maximum Daily Load Geometric Mean of 2001 Data = 915.03 IDEM Data & USGS Gage Duration Interval 1060 square miles

  4. Eel River Including Splunge CreekWQ Duration Curve (2001 Monitoring Data)Site: #4 (WWE090-0014) Low Flows High Flows Moist Conditions Mid-range Flows Dry Conditions Office of Water Quality Total Maximum Daily Load Geometric Mean = 487.83 IDEM Data & USGS Gage Duration Interval 998 square miles

  5. Birch Cr above Crooked Cr and Brush Cr at SR 46WQ Duration Curve (1991-2001 Flow Data & 1996 E. coli Data)Site: #1 (WWE080-0003) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load IDEM Data & USGS Gage Duration Interval 39.2 square miles

  6. Birch Cr below Crooked Cr and Brush Cr at CR300SWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #2 (WWE080-0009) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 252.29 IDEM Data & USGS Gage Duration Interval 64.8 square miles

  7. Splunge Cr at mouth on CR535W-CR550WWQ Duration Curve (1991-2001 Flow Data & 1996 E. coli Data)Site: #3 (WWE090-0002) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load IDEM Data & USGS Gage Duration Interval 46.1 square miles

  8. Unnamed Trib. #1 to Connelly DitchWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #05 (WWE090-0033) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 305.58 3.12square miles IDEM Data & USGS Gage Duration Interval

  9. Unnamed Trib. #2 to Connelly Ditch at CR500S & CR100EWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #06 (WWE090-0034) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 678.20 1.56square miles IDEM Data & USGS Gage Duration Interval

  10. Connelly Ditch at CR50EWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #07 (WWE090-0035) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 1004.31 6.24square miles IDEM Data & USGS Gage Duration Interval

  11. Connelly Ditch at CR600SWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #08 (WWE090-0036) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 192.65 12.48square miles IDEM Data & USGS Gage Duration Interval

  12. Connelly Ditch upstream of Clay City Trib. on SR 246WQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #09 (WWE090-0038) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 63.90 15.6square miles IDEM Data & USGS Gage Duration Interval

  13. Connelly Ditch at CR1100SWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #11 (WWE090-0039) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 85.50 28.08square miles IDEM Data & USGS Gage Duration Interval

  14. Connelly Ditch near mouth at CR1200SWQ Duration Curve (1991-2001 Flow Data & 1996 & 2001 E. coli Data)Site: #12&13 (WWE090-0003 & WWE090-0040) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean of 1996 Data = 246.76 31.2square miles IDEM Data & USGS Gage Duration Interval

  15. Connelly Ditch at CR400S near River RoadWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #15 (WWE090-0032) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 203.16 4.68square miles IDEM Data & USGS Gage Duration Interval

  16. White Oak Cr at CR1250SWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #16 (WWE090-0021) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 218.16 9.6square miles IDEM Data & USGS Gage Duration Interval

  17. Lagoon Creek at CR850SWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #21 (WWE090-0023) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 285.09 23.9square miles IDEM Data & USGS Gage Duration Interval

  18. Eel River Above Turkey Creek at SR 157WQ Duration Curve (1991 - 2001 Flow Data)Site: #23 (WWE090-0024) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 816.93 1,131square miles IDEM Data & USGS Gage Duration Interval

  19. Lick Creek at CR150S, East of Bond RdWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #24 (WWE090-0025) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 150.47 8.16square miles IDEM Data & USGS Gage Duration Interval

  20. Lick Creek at CR300SWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #25 (WWE090-0026) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 147.28 19.525square miles IDEM Data & USGS Gage Duration Interval

  21. Hauser Creek a Trib. of Lick Creek at CR350SWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #26 (WWE090-0027) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 106.20 7.875square miles IDEM Data & USGS Gage Duration Interval

  22. Lick Creek at CR450SWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #27 (WWE090-0028) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 342.69 32.2square miles IDEM Data & USGS Gage Duration Interval

  23. Lick Creek above Beech Creek (Need Ditch-Beach Creek) at CR750SWQ Duration Curve (1991-2001 Flow Data & 1996 E. coli Data)Site: #28 (WWE090-0006) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load 38.8square miles IDEM Data & USGS Gage Duration Interval

  24. Beech Creek (Need Ditch-Beach Creek) on Arney RdWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #29 (WWE090-0029) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 674.23 6.01square miles IDEM Data & USGS Gage Duration Interval

  25. Brush Creek at CR700SWQ Duration Curve (1991-2001 Flow Data & 2001 E. coli Data)Site: #30 (WWE090-0030) Moist Conditions Mid-range Flows Dry Conditions Low Flows High Flows Office of Water Quality Total Maximum Daily Load Geometric Mean = 295.33 3.09square miles IDEM Data & USGS Gage Duration Interval

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