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Show Final Report Hydrologic Model Analysis of the Provo River Basin setting of the Provo River system is it possible to define and evaluate each of the operational parameters that affect the system. The primary operational parameters or assumptions used to define this scenario are divided into three classifications: demands, system storage rules, and reservoir operations. Each of these is described below. As was the case for the Historical Scenario described in Section 3.1.3.1, the Proposed Demands Scenario used the direct flow water rights information developed in the Provo River water rights analysis study and in the Weber River water rights analysis study, as documented in CUWCD, 1993b and CUWCD, 1993e. 4.1.3 Demands The specific demands data developed to simulate the operation of the Provo River system under this scenario were designed to represent anticipated future, steady- state, full- demand conditions. Municipal and industrial withdrawals were set at their maximum levels under current water rights and reservoir ownership. Irrigation demands were not adjusted from their historic levels, even though development has significantly decreased the acreage of lands being irrigated, and this trend is likely to continue in the future. Irrigation diversions in excess of water rights were not permitted because this practice is expected to terminate in the future as full M& I diversions begin. Specific demands assumptions for the Proposed Demands Scenario are listed in Table 4- 1. Table 4- 1 Proposed Demands Scenario Demands Assumptions CUP demands are similar to the volume of demand satisfied in USBR operations studies and average 107,500 acre- feet per year. PRP demands are set at 100,000 acre- feet per year. Utah Lake demands are equal to historical releases, limited to 302,000 acre- feet, and reduced by the estimated historical yield of CUWCD's Utah Lake water right purchases. Weber River below Gateway demands are set at 21,000 acre- feet per month during the irrigation season. Other demands are based on historical diversions, modified to account for the above Jordanelle and Deer Creek reservoir demands. January 1998 Page 26 |