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Fish Creek Drainage. Seven monitoring sites exist within the Fish Creek drainage: NPDES • <br />004 and Sites 6 and 10 are located on Cow Camp Creek. NPDES 008 end Site 12 are located <br />on Bond Creek. Sites t1 end 13 exist on Fish Creek. <br />NPDES Discharge Point 004, Nydrographs based on weekly flow measurements ere presented in <br />Appendix F. The hydrographs for NPDES sites consist of two parts; the first being date <br />for 1993 only, while the second shows historical date from July, 1982 to September, 1993. <br />The yearly average flow (from weekly measurements) since this pond began to floe were: <br />1993WY = 0.360 cfs <br />1992WY = 0.131 cfs <br />1991WY = 0.189 cfs <br />1990WY = 0.135 cfs <br />1989WY = 0.214 cfs <br />1988WY = 0.180 cfs <br />1987WY = 0.110 cfs <br />1986WY (Water Year) = 0.294 cfs <br />1985CY = 0.357 cfs • <br />1984CY = 0.447 cfs <br />1983LY (Calendar Year) = 0.154 cfs (reservoir did not completely fill until <br />March 7, 1983) <br />Review of hydrographs and the above table shoos that in 1993, flows were higher than they <br />have been for the past seven years. Also affecting flow from the 004 pond is the reduced <br />diameter of [he discharge culvert modified on May 29, 1987 (36 inches to 6 inches). <br />Review of Table 15 shows the eater at this site to be a NgCa-S04 type. TDS has <br />consistently increased since 1982 primarily due to a concurrent increase in upgradient <br />mined area and ground eater resaturation in the spoils. <br />Surface Water Site SW-S2-b. This site monitors Cow Lamp Creek less than 1/4 mile <br />downstream of the NPDES 004 discharge and an adjacent diversion ditch. Review of e <br />h ydrograph consisting of all date from May, 1981 to September, 1993 shows [he highest peak <br />flow from snowpack runoff since 1985. Peak flows at this site have been reduced further <br />by the reduction of the discharge culvert diameter in 1987 at the NPDES 004 site discussed • <br />earlier. <br />10 <br />