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• with Bateman Creek due to discharges into Wilson Creek from the City of Victor's waste water treatment plant. Flows in the Bateman Creek tributary are ephemeral in the upper reaches and intermittent in the lower reaches with freezing occumng during the winter months. CC&V monitors three stations on Theresa Creek, one station on Wilson Creek above the confluence with Bateman Creek, and one station on Bateman Creek. The oldest station was installed in 1992 and the most recent station was installed in 1997. Flow data from CC&V's monitoring of the Wilson Creek drainage are presented graphically in the back of Appendix 1, Volume II of this document. The graphs show limited flows, in response to precipitation, in upper Theresa Gulch. In lower Theresa Gulch, the data show ]ow, but continual, flows. Flows in Bateman Creek vary on a seasonal basis. Wilson Creek at the CC&V monitoring station appears perennial, but flows are low in the winter months. Wilson Creek has stream standards and is classified as usable for • recreation (Class 1), agriculture, as a Class 2 cold water aquatic stream, and as a water supply. Standards exist for pH, dissolved oxygen, fecal coliforms, major cations, and major anions as well as some metals and cyanide. Water quality measurements for the Theresa Gulch tributary show bicarbonate as the dominant anion and calcium as the dominant cation. The two lower stations in Theresa Gulch show sulfate as the dominant anion and calcium as the dominant cation. The Bateman Creek station shows bicarbonate and sulfate as the dominant anions and calcium as the dominant cation. The Wilson Creek station measures sulfate as the dominant anion and calcium as the dominant cation. Grassy Creek Flows in Grassy Creek aze ephemeral. CC&V monitors three stations on Grassy Creek. The oldest station was established in 1996 and the other two stations were established in 1997. Flows for the three Grassy Creek stations aze shown graphically in the back of Appendix 1, Volume II of this document. The • flow data indicate neaz constant flow with a distinct relationship to precipitation. 25