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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Interim Alternative Plans <br /> <br />The CWCB selected seven of the original conceptual plans to undergo further <br />evaluation and suggested one additional concept solely for municipal, <br />domestic, and industrial purposes. The interim alternative plans selected <br /> <br />were: <br /> <br />Avery <br />Miller Creek <br />Sawmill Mountain <br />Steeley <br />Warner Point <br />Powell Park-Lost Park <br />Ripple-Lost Park-Little Beaver <br />Avery, M&I-only <br /> <br />The two- and three-reservoir plans were included in order to illustrate the <br />cost difference between single and multiple reservoir plans. The interim <br />analysis on the above plans included the preliminary design of intake, <br />storage, and delivery systems, and preliminary cost estimates. The M&I-only <br />plan was included to determine the incremental cost of the irrigation <br />component. <br /> <br />Intake and Storage Systems <br />Intake facilities are required to convey water to reservoirs on tributaries <br />of the White River. The intake works generally include diversion oams and <br />pipelines or canals to carry the water to the reservoirs. <br /> <br />Reservoir sizing for each alternative was accomplished by estimating the <br />dead and inactive storage capacity requirements at each site. The active <br />capacity was assumed to be 55,000 acre-feet for all plans. The surcharge <br />capacity was estimated from the peak flood taken from general flood <br />estimating curves. <br /> <br />IV-3 <br />