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• Spring S-31 has been developed with subsurface collectors to more <br />efficiently tap the shallow ground water in the colluvial and slope <br />wash deposits located adjacent to Long Draw. The water quality of <br />the spring is similar to colluvial wells SM-5 and SM-6 in the East <br />Roatcap Drainage and wells SM-3 and SM-9 in the Stevens Gulch <br />Drainage. <br />Discharge measured in 1991 at Station SW-6 on East Roatcap Creek <br />was very low. Flows of 0.55 cfs and 0.0001 cfs were measured on <br />June 3 and June 29, respectively. The stream at the gaging station <br />was dry at other times. <br />Flow was measured at Station SW-11 on Main Roatcap Creek only on <br />May 31, 1991. Flows at this station show not only the typical <br />seasonal fluctuations but also the impacts of irrigation and water <br />supply diversions. Monitoring at this station appears to have <br />little utility or relevance to mine impact monitoring and the need <br />for continuing to monitor should be evaluated. Similarly, station <br />SW-9 measures diversion from Overland ditch into West Roatcap Creek <br />while station SW-12 measures flow in the Roberts-Strucker Ditch. <br />Flows at these stations also show typical seasonal fluctuations and <br />are largely controlled by diversions and head gate operation. <br />Monitoring at these stations also have little utility or relevance <br />to mine impact monitoring and their continued monitoring should be <br />reconsidered. <br /> <br />10 <br />