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• concentrations. The natural conditions is Tweatymile Park appear to have a much <br />greater impact on the venter quality of Fieh Creek. <br />Little Graeey Creek Drainage. Two monitoring sites lie within the Little Graeey <br />Creek dzniaage: Site 5, located is the southwest portion of the permit area and <br />NPDES Discharge Point 002, also known ae the Wedge Impoundment. <br />- Surface Water Site 3W-S2-5 (9SLG5). 91te 5 drains the upper reaches of Little <br />Graeey Creek which are undisturbed by mining. A comparison of its hydrogrnph to <br />that o£ NPDES 002 indicates that Bite 5 Se a relatively minor contributor to the <br />flow is this basin. <br />- NPD89 Diacharga Point 002 (NPDES2). Eydrographa are Dreaented is Appendix D. <br />The hydrographe consist of two pages, the first is for date this year, and the <br />second shows all hletorical data. The following table, which lists the average <br />flow values for each year, shows that this year's discharge was nearly average, <br /> being ranked teeth highest out of twenty one years. <br />. 2000cPY (Water Year) = 0.320 cfa (monthly meaeuremeats) <br /> 1999wY 0.483 cfa (weekly meaeuremeats) <br /> 199BWY = 1.209 efe ^ <br /> 1997WY = 1.241 efe " <br /> 1996WY = 1.400 efe " <br /> 1995WY = 0.386 cfa <br /> 1994WY 0.116 efe ^ <br /> 1993WY 0.602 cfa <br /> 1992WY = 0.072 cfa " <br /> 1991WY = 0,072 cfa <br /> 1990WY = 0.076 cfa " <br /> 1989WY = 0,181 cfs ^ <br /> 198BNY 0.055 efe ^ <br /> 1987WY = 0.070 cfs ^ <br /> 1988WY = 0,568 cfa ^ <br /> 1985CY (Calendar Year) = 1.172 cfs " <br /> 1984CY = 1.639 cfa <br />• 1983CY = 0.531 cfa ^ <br /> 1982CY = 0.547 c£s <br />IS <br />