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<br />. Since 1970, depletions have increased on the Duchesne River, with average <br />depletions at 342,000 acre-feet. <br /> <br />. Over the life of the project, the Bonneville Unit will, on average, annually deplete <br />143,200 acre-feet from the Duchesne River system. <br /> <br />. The UBRP Project is anticipating additional depletions to the Duchesne River system <br />of 26,300 acre-feet per year. <br /> <br />. The USFWS flow recommendations for wet, average, and dry years in total will <br />require 555,000; 338,000; and 184,000 acre-feet of water on a yearly basis at the <br />Duchesne River Randlett gauge, <br /> <br />. The USFWS flow recommendations are based solely on hydrology with no <br />biological data to determine the actual needs of the fish. <br /> <br />. During dry years, including the recent period of 1989-1994, the USFWS <br />recommended flows, if met at Randlett, would require up to 134,000 acre-feet of <br />additional water to be introduced in the system, <br /> <br />. There are a number of potential sources of water in the Duchesne River Basin, <br />however, most would require the purchase of water rights either directly or through <br />land fallowing. <br /> <br />. Water from the various sources, if purchased, would be at a cost of $1,000 to $1,500 <br />per acre-foot or market value, if the water is available for purchase. <br /> <br />. The study group associated with this study supports the efforts to fund biological <br />studies to provide data for determining flows needed by the endangered species. <br /> <br />. The study group associated with this study supports the correlation of the best <br />scientific data (geomorphology, biology, hydrology), to determine needed fishery <br />flows. <br /> <br />SLCI 1341 07\REPT1 ,DOC <br /> <br />E-? <br />