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<br />rYe <br /> <br />.' <br /> <br />3047 <br /> <br />.' <br /> <br />. <br /> <br />In the Narr01(TS Unit service area there are 33 irrigation systems. <br /> <br />Four offstream reservoirs serve 10 to 12 or the ditch systems. However, <br /> <br />none of these reservoirs arc large enough to store edcquate supplies <br /> <br />for their associated ditch systems. Dil'ect streamf1ol-ls are used as <br /> <br />the major source of supply for the remaining d{tch systems. The lack <br /> <br />of storage faci1itie8 is a major factor contributing toward the annual <br /> <br />shortages of \mter. 1\-'enty~three of the ditches, I/hich serve 98.lf <br /> <br />percent of.the irrigab1e lands in the Lowet' South Platte I'later Conservancy <br /> <br />District, experienced an average annual diversion shortage of 178,000 <br /> <br />acre-feet over the 1947-1961 period. <br /> <br />of surplus streamflo\(T and from direct-flow \(Tater ,rights associated with <br /> <br />irrigated lands to be acqui.red for the Narro\(Ts Dam and Reservoir and <br /> <br />21,300 acre-feet from divertible return flows. Irrigation storage <br /> <br />capacity in Jackson Lake Reservoir would be transferred to the NarrOl'lS <br /> <br />Reservoir. <br /> <br />Storage water "lOu1d be released as necessary from the NarrO\(Ts <br /> <br />Reservoir to supp1elr.ent i,rrigation vlithin the service area, totaling <br /> <br />166,370 acres of irrigated land in'the conservancy district. Supple- <br /> <br />mental releases would be conveyed do\(Tnstream in the river channel to <br /> <br />the diversion \'lorks of existing irrigation s)'stems. <br /> <br />\ <br /> <br />. <br /> <br />The supplemental watet' supply for Unit lands, analyzed on the <br /> <br />basis of a 100-year period and an interest rate of 3-1/4 percent, would <br /> <br />