Laserfiche WebLink
<br />sources of water to meet these deficiencies can only corne from two sources, water in <br />storage or winter flows that are now going into storage in the system. The peak flow <br />requirement of 134,000 acre-feet represent 50 percent of the long-term (1912-1990) average <br />depletions on the Duchesne River of 270,000 acre-feet. <br /> <br />Determination of Potential Sources of Water <br /> <br />As is the case with the main stern Colorado River, water in the Duchesne River has been <br />diverted and put to beneficial use under state law. The cycle of diversion, use, and flows <br />returning to the river occurs several times as the river flows down the system. As is very <br />evident from the results of the study, sufficient water to meet the USFWS flow <br />recommendations is not available given current use. This is true for both monthly and <br />annual flows. In this report, we discuss possible sources that could potentially augment <br />flows in the river without attempting to match the difference between existing flows and <br />the USFWS recommended flows. <br /> <br />Some of the potential sources of water examined in this report include existing Bonneville <br />Unit fishery flows, potential Daniels Creek diversions, land purchase and fallow; <br />conservation projects such as water delivery improvement projects (such as canal lining or <br />piping), on-farm conservation improvements such as sprinkler systems, and purchase of <br />water in existing storage facilities. Each of these potential sources are summarized in the <br />table below. <br /> <br /> <br />Source <br /> <br />Amount <br />. .( acre;;f~~t); <br />20,000-25,000 <br />2,900 <br /> <br />Bonneville Unit Fishery Flows <br />Daniels Creek Diversions <br />Land Purchase and Fallow <br />Conservation Projects Delivery <br />On-Farm Conservation Projects <br />Purchase of Existing Water Rights Storage <br /> <br />? <br />? <br />? <br />? <br /> <br />Cost <br />. ($/ acre foot) <br />o <br /> <br />o <br /> <br />Market Value <br />$1,000-1,500 <br />$1,000-1,500 <br /> <br />Market Value <br /> <br /> <br />Study Results and Conclusions <br /> <br />. The long-term average flow (1912-1990) in the Duchesne River at Randlett has <br />~..~-----' A08 0"0 ---e l-e' <br />aVI;;:.LCl5CU "'Z] , V U,o-L -Lt:: l.. <br /> <br />. The USBR's pre-development theoretical flows show the virgin flows of the <br />Duchesne River for the same period (1912-1990) averaging 768,000 acre-feet. <br /> <br />. Long-term depletions on the Duchesne River at Randlett, calculated using the <br />USBR's pre-development flows have been 270,000 acre-feet. <br /> <br />SLC\134107\REPT1.DOC <br /> <br />E'6 <br />