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Show Final Report Hydrologic Model Analysis of the Provo River Basin Table 4- 3 Proposed Demands Scenario River, Reservoir, and Project Operations Assumptions Instream flow requirements are in place above Hailstone, below Jordanelle, below Deer Creek, and in the winter below Olmsted. When possible, reservoir releases to meet IFRs are recaptured as priority storage in a downstream reservoir. CUP recaptures 5,140 acre- feet of return flow from CUP agricultural deliveries to Heber Valley in Deer Creek Reservoir. PRP recaptures 9,000 acre- feet of return flow every year from foreign water delivered to Utah County in Utah Lake. ( PRP may recapture return flows from the delivery of Weber and Duchesne imports under Water Right 55- 262.) Head of River Reservoirs are stabilized with an active storage of 5,172 acre- feet. HOR storage capacity of 8,842 acre- feet is transferred to Jordanelle. The monthly volume of releases from Strawberry Reservoir to Utah Lake ( for exchange to Jordanelle) is set to maximize CUP yield in critical years. The annual volumes range from 12,000 to 103,000 acre- feet, and average 29,000 acre- feet. Loss rate of 4% is applied to deliveries from Jordanelle Reservoir. Jacob Welby Exchange is in place between SLCWCD and CUP. CUP/ PRP exchanges are in place to limit storage of PRP water in Jordanelle and CUP water in Deer Creek. The PRP/ CUP exchanges identified in the DC/ JOA control the transfer of water between the two reservoirs. PRP water is stored in Jordanelle on a temporary basis as per the DC/ JOA to facilitate these exchanges. Flood control operations, which may limit spring storage levels in Jordanelle, are not modeled. Wasatch County Water Efficiency Project is not modeled. January 1998 Page 29 |