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<br /><~~:? <br /> <br />'. .'-, <br /> <br />0:1900 <br /> <br />copy <br /> <br />3 <br /> <br />depletions, together with possible depletions by other existing <br />transbasin diversion facilities, there will generally be insufficient <br />water in the Colorado River near Glenwood Springs to satisfy the <br />decree for the power plant at Shoshone during the winter momths, and <br />during the months of August and September in most years. Average <br />runoff in the 1945M1953 period is about the same as the long time <br />average for some 40 years prior to 1953, for the Blue River and the <br />Roaring Fork River which head in the general vicinity of Homestake <br />Creek. Average runoff in the last 20 years, or during the 1934-1953 <br />period, has been about 90 percent of the average for the 1945-1953 <br />period for these two streams. On that basis it may be assumed that <br />for Area 1 the average water production above the collection system, <br />for the months of May, June and July, would be approximately 41,000 <br />acre-feet. over a 43-year period with precipitation such as that <br />which occurred during the years 1911-1953, and would be 37,000 <br />acre-feet for a 20-year period such as 1934-1953. The drainage <br />area above the Area 1 system is 31.7 square miles. The average <br />runoff rates for the 43 and 20 year periods would be respectively <br />1295 and 1180 acre-feet per square mile. For a decade with low <br />precipitation such as the 1931-1940 period, average water production <br />for Area 1 would be about 33,000 acre-feet or 1040 acre-feet per <br />square mile, which is 80 percent of the average for the 43-year <br />period. <br />The collection system for Area 2 would intercept runoff from <br />34 square miles lying north of Area 1 and drained by tributaries <br />of the Ea<;il:e River, including Cross Creek and Fall Creek, and by <br />several short tributaries entering Homestake Creek from the west. <br />