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<br />:i <br /> <br />OtlGI <br /> <br />The service area of approximately 120,300 acres was estimated to have <br />an annual average river diversion requirement for supplemental surface <br />water of 84,000 acre-feet. Conveyance losses have been estimated to be <br />approximately 38 percent of the river diversions. The estimated annual <br />farm-headgate demand for supplemental water on the 120,300 acres <br />overlying the alluvial aquifer is 52,100 acre-feet on the average. It <br />varies from 20,300 to 109,100 acre-feet. <br /> <br />River Diversion Requirements ~ ~>~7'\ ' <br />Recharged water will be pum~t.a';'0J'~\,g rate throughout the irrigation <br />season with maximum p,~~'a~,:~~tpated to occur in July and August. <br />O h. 1 ........ (> d" .\ ,'. '. f . f h h d <br />ue to t 1S ag ~I",e~' raln-out 0 a port10n 0 t e rec arge water <br />will occur. A~~t~~~:neous and isotropic aquifer characteristics <br />between the reCh~ge area and the stream, the amount of drain-out occurring <br />in a given time frame depends largely upon the distance between the stream <br />and the recharge ponds. <br /> <br />Based on information provided by the Geological Survey, the accumulated <br />amount of drain-out at the end of a 7-month irrigation season has been <br />estimated to be 29,700 acre-feet for an entirely new conveyance and <br />recharge system. This amount of drain-out was assumed to represent the <br />nonrecoverable losses that would occur during the irrigation season and <br /> <br />was added to the farm delivery requirement of 52,100 acre-feet. This <br />yielded an annual river diversion requirement of 81,800 acre-feet. <br />