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  1. Attachment B. Water Quality Duration Curves for the Flatrock-Haw Creek Watershed

  2. Flatrock River at US 40 Bridge near Lewisville, INE. coli Water Quality Duration Curve Site: #05 (WEF010-0001)USGS Stream Flow Data (10/01/1930 to 9/30/2003) and IDEM E. coli Sampling Data (1997 & 2002) Low Flows Dry Conditions Mid-range Flows Moist Conditions High Flows Geometric Mean = 479 cfu/100ml IDEM Water Quality Data & USGS Gage 03363500 Stream Flow Data Upstream Drainage Area is 47.8 square miles

  3. Flatrock River at US 52 (SR 3) Bridge in Rushville, INE. coli Water Quality Duration Curve Site: #8 (WEF020-0012)USGS Streasm Flow Data (10/01/1930 to 9/30/2003) and IDEM E. coli Sampling Data (2002) High Flows Moist Conditions Mid-range Flows Dry Conditions Low Flows Geometric Mean = 784 cfu/100ml IDEM Water Quality Data & USGS Gage 03363500 Stream Flow Data Upstream Drainage Area is 168 square miles

  4. Flatrock River at USGS St. Paul Gage SiteE. coli Water Quality Duration CurveSite: #10 (WEF040-0002)USGS Stream Flow Data (10/01/1930 to 9/30/2003) and IDEM E. coli Sampling Data (1997 & 2002) Low Flows High Flows Moist Conditions Mid-range Flows Dry Conditions Geometric Mean = 433 cfu/100ml IDEM Water Quality Data & USGS Gage 03363500 Stream Flow Data Upstream Drainage Area is 303 square miles

  5. Flatrock River at SR 31 Bridge in Columbus, INE. coli Water Quality Duration CurveSite: #14 (WEF050-0001)USGS Stream Flow Data (10/01/1997 to 09/30/2003) and IDEM E. coli Sampling Data (2002) Dry Conditions Mid-range Flows Low Flows Moist Conditions High Flows IDEM Water Quality Data & USGS Gage 03363900 Stream Flow Data Upstream Drainage Area is 534 square miles

  6. Haw Creek at SR 7 in Columbus, INE. coli Water Quality Duration CurveSite: #16 (WEF060-0002)USGS Stream Flow Data (10/01/1967 to 09/30/2004) and IDEM E. coli Sampling Data (2002) Dry Conditions Mid-range Flows Low Flows Moist Conditions High Flows IDEM Water Quality Data & USGS Gage 03363900 Stream Flow Data Upstream Drainage Area is 55.5 square miles