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discharge from the underground mine and dischazges related to the surface mines. The data <br />from the stations on Fish Creek show the typical seasonal variation. Due to the low runoff in <br />1990 the minimum flows are very low. The flow data for fish Creek are presented on Figures <br />28 through 30 and 41. No impact from the activities at the Tipple or Borehole are indicated by <br />the data. <br />The two sites on Trout Creek indicated the impacts of irrigation on the stream flow. Due to <br />relatively large irrigation withdrawals in 1990 the stream flow at Station 69 were significantly <br />lower than at Station 301 during the irrigation season. The flow data for Trout Creek are <br />presented on Figures 31 and 32. The discharge from the underground mine probably helped <br />maintain some flow in Trout Creek below Middle Creek. <br />Water Quality <br />Water quality samples aze collected at all the primary sites on a regulaz basis. The water quality <br />summaries for Foidel Creek aze presented on Tables 31 to 34. The water quality summaries for <br />Fish creek are presented on Tables 35 and 43. The water quality summaries for Trout Creek <br />are presented on Tables 44 to 47. Plots of historic field conductivity for Foidel Creek are <br />presented on Figures 34 and 35. The plot of historical field conductivity for Fish Creek near <br />the tipple is presented on Figure 36. The plot of historical field conductivity and iron for Fish <br />Creek near the Fish Creek Borehole is presented on Figure 38 and 48 respectively. The plot <br />of historic iron concentrations for Fish Creek neaz the tipple is presented on Figure 37. The plot <br />of historical field conductivity for Trout Creek is presented on Figure 39. <br />The base level of field conductivity measured during spring runoff, was higher for the <br />downstream site on Foidel Creek. It is approximately 2000 umhos/cm upstream and 2500 <br />downstream. Since 1981 the base level for conductivity at both sites has been increasing. <br />During irrigation season the field conductivity at Station 800 was approximately 2500 umhos/cm <br />and at Station 8 was approximately 3000 umhos/cm in 1990. A difference between the levels <br />at the two stations was evident before the beginning of underground mining; therefore, it is at <br />-7- <br />