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11 <br />Schwartzwalder Mine -Hydrologic Evaluation of Mine Closure and Reclamation <br />Table 4. Flow Rates in Ralston Creek vs. Monthly Mean Precipitation at Ralston Reservoir <br />Month Mean <br />Monthly <br />Flow <br />(cfs) Average <br />Minimum Flow <br />(cfs) Average <br />Maximum <br />Flow (cfs) Number of <br />Months <br />(for which flow <br />data were <br />available Mean Monthly <br />Precipitation <br />(in) <br />Jan 1.6 1.3 1.8 35 <br />35 0.61 <br />65 <br />0 <br />Feb 1.7 1.2 2.2 38 . <br />87 <br />1 <br />Mar 4.1 2.3 9.1 44 . <br />41 <br />2 <br />A r 14.1 4.1 32.4 47 . <br />93 <br />2 <br />Ma 32.4 13.3 57.6 45 . <br />96 <br />1 <br />Jun 16.1 4.0 34.5 40 . <br />64 <br />1 <br />Jul 3.8 1.4 16.0 39 . <br />13 <br />2 <br />Au 2.9 L 1 6.9 37 . <br />38 <br />1 <br />Se 2.4 1.1 7.1 37 . <br />22 <br />1 <br />Oct 2.2 1.5 6.1 36 . <br />13 <br />1 <br />Nov 2.5 1.4 5.8 35 . <br />75 <br />0 <br />Dec 1.8 1.4 2.2 . <br />Average <br />Monthl 7.1 cfs <br />1.56 in. <br />y 68 in <br />18 <br />Annual Average 5160.7 acre-ft <br />2004 <br />. <br />NOTES: Flow da <br />Precipi ta obtained from Denver Water, period of record March 1957 through January <br />tation data from National Climatic Data Center, period of record May 1978 through July 20 07 <br />Whetstone Associates • <br />4109B.071116 <br />