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• Surface Water Oualitp <br />General Area <br />Surface water quantity in the general area is variable and inconsistent from drainage to <br />drainage. Drainages in the genera( area have not received the attention that the drainages <br />adjacent to and within the permit area have received because there is no hydrologic <br />connection between these areas. Flow estimates and water balance calculations for these <br />areas have not been examined because they will not be disturbed by the Colowyo Nfine. <br />Permit Area <br />The drainages that have been the most intensively studied in and adjacent to the mine area <br />include Taylor Creek, Goodspring Creek and Wilson Creek. Continuous flow recorders have <br />been maintained on Taylor Creek and Wilson Creek by the USGS since 1974. A continuous <br />recorder was operated on Goodspring Creek from 1974 to 1978. The flow information <br />resulting from these gages is presented in Table 7. <br />These data reflect the highly variable nature of surface flows in the drainages. Taylor Creek, <br />the intermittent stream, had mean monthly Flows of 0.0 cubic feet per second (cfs) for much <br />of the period of record. Mean flows greater than 0.0 cfs were extremely low and reached a <br />peak of 2.80 cfs in May 1980 reflecting the high snowmen generated runoff. The maximum <br />and minimum monthly flows also included for Taylor Creek give a further insight into its <br />dependence on snoevmelt and rainstorm runoff. This information supports the contention of <br />very limited groundwater seepage to sustain flows near the mining area. The maximum daily <br />flow value of 18.00 cfs in February, 1980 was a result of high snowmelt runoff and rainfal] <br />on a melting snowpack. Minimum flows of 0.0 cfs again reflect the highly sporadic nature <br />and intermittency of this stream. <br />`. J <br />2.04.7-36 <br />