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<br />. <br /> <br />. <br /> <br />supply system and quantify the expected frequency of shortages which will <br />adversely impact IIlJni cipal suppl i es. Subsequent studi es will i nvestiga te <br />the potential benefits rEfsul ting from varyi ng capacities of storage in the <br />reservoir. <br /> <br />The water rights driven network optimization model MODSIM will be used <br />to simulate system operation. The model accounts for water storage, con- <br />veyance via canals, consumptive use and return flows, all within a water <br />rights priority system. Actual or estimated values of IIlJnicipal demands, <br />i nstream fl ow requi rements, crop irriga ti on requi rements and system water <br />suppl i es will be used as input to the model. The impacts of varyi ng water <br />surface elevations in the reservoir on recreation and wildlife will be <br />incorporated in the results of the operations studies. <br /> <br />E. Hydrologic Analysis <br /> <br />The inflow design flood (IDF) will be developed from design precipita- <br />tion in accordance with the Rules and Regulations for Dam Safety and <br />Constructi on developed by the State Engi neers Offi ceo Thi s fl ood will be <br />routed through the reservoi r to detenni ne the appropri ate spillway size <br />needed to successfully pass the IDF. Spillways may be sized for several <br />different reservoir capacities identified as optimal during the operation <br />studies. The potential downstream impact of both regulated and unregulated <br />di scharges from the reservoi r will be evaluated. <br /> <br />F. Design <br /> <br />Feasibility level design will be completed for the dam embankment, <br />spillway, outl et works, supply pipel ine and diversion system. Stabil ity <br />analysi swill be perfonned for the embankment incorporati ng both hydrosta- <br />tic and earthquake loads. <br /> <br />G. Economic Evaluation <br /> <br />Estimates of the capital cost and operation and maintenance costs will <br />be prepared for each component of the reservoir and diversion system based <br />upon the fi ndi ngs of part E. Cost estimates wi 11 al so be prepared for <br />recreati onal facil iti es. The benefi ts stemmi ng from the construction of <br />White Creek Dam and Reservoir will be quantitatively and qualitatively pre- <br />sented in tenns of the degree to which project objectives are real ized. <br />Finally, a repayment schedul e will be prepared for the project. <br /> <br />H. Feasibility Report Preparation <br /> <br />The feasibility report on the construction of White Creek Dam and <br />Reservoi r wi 11 be presented accordi ng to the foll a./i ng general outl i ne: <br /> <br />- 3 - <br />