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- NPDES Discharge Point 002 (NPDE52). Hydrographs are presented in <br />Appendix D. The hydrographs consist of two pages, the first is for data <br />this year, and the second shows all historical data. The following <br />table lists the average flow values for each water year. <br />2004 = 0.283 cfs (monthly measurements) <br />2003 - 0.323 cfs " <br />2002 = 0.245 cfs " <br />2001 = 0.374 cfs " <br />2000 = 0.320 cfs " <br />1999 - 0.483 cfs (weekly measurements) <br />1998 = 1.209 cfs " <br />1997 = 1.242 cfs " <br />1996 = 1.400 cfs " <br />1995 - 0.386 cfs " <br />1994 = 0.114 cfs <br />1993 = 0.602 cfs " <br />1992 = 0.072 cfs " <br />1991 = 0.072 cfs <br />1990 = 0.076 cfs " <br />1989 = 0.181 cfs " <br />1988 = 0.055 cfs " <br />1987 = 0.070 cfs " <br />1986 = 0.568 cfs " <br />1985CY (Calendar Year) = 1.172 cfs " <br />1984CY = 1.439 cfs " <br />1983CY = 0.531 cfs " <br />1982CY = 0.547 cfs " <br />1981CY = 0.098 cfs " <br />1980CY = 0.990 cfs " <br />This year's average flow value, 0.283 cfs, is 518 of the historic (1980- <br />2004) average flow value, 0.552 cfs. Flow values at this site are <br />affected by the pumping of water from this pond for the truck wash <br />system and for water trucks (dust control). Pumping for the truck wash <br />system began on September 18, 1984. Also, the upper end of this pond was • <br />regraded in 2002. Review of the TDS plot indicates an increasing trend. <br />16 <br />