Laserfiche WebLink
<br />Ou21b7 <br /> <br />IX. PROJECT OPERATION <br /> <br />A. Computer Simulation <br /> <br />A computer reservoir operation study (notation as shown in figure 19) <br /> <br /> <br />was run to simulate a potential Colorado White River reservoir upstream of the <br /> <br /> <br />potential Utah White River Reservoir, and determine for the Utah White River <br /> <br /> <br />Reservoir: 1) whether the active capacity is sufficient to meet all potential <br /> <br /> <br />demands on the river under project conditions, 2) the drawdown required, <br /> <br /> <br />3) the maximum and minimum releases for power generation within acceptable limits <br /> <br /> <br />of the turbine, and 4) resulting spills. The simulation is based on mean monthly <br /> <br />flow values for the 48-year time period from 1931 to 1978. <br /> <br /> <br />The simulation assumed 12,845 acres of full service Indian land being <br /> <br /> <br />brought under irrigation with a diversion requirement of 51,000 acre-feet, an <br /> <br /> <br />oil shale depletion of 44,000 acre-feet per year, and an 8,000 acre-foot steam <br /> <br /> <br />power plant depletion. Of the 44,000 acre-feet of water supplied for oil shale <br /> <br /> <br />annually some 26,000 acre-feet will be pumped directly from the reservoir to the <br /> <br /> <br />lease tracts Ua and Ub. The remaining 18,000 acre-feet will be released to the <br /> <br /> <br />downstream Tosco Corporation use. The simulation study did not differentiate <br /> <br /> <br />direct flows from storage. Therefore, it is not possible to allocate active <br /> <br /> <br />reservoir storage capacity in the reservoir to specific uses. A minimum release <br /> <br />to the White River below the dam of 250 cfs will be maintained. If the <br /> <br /> <br />minimum release were to be increased more frequent shortages would occur. Maximum <br /> <br />release will be 600 cfs. <br /> <br />The minimum water level that will be maintained is elevation 4969 feet <br /> <br /> <br />corresponding to the inactive storage of 38,000 acre-feet. This represents a <br /> <br /> <br />maximum drawdown of 46 feet in the reservoir. <br /> <br />Table 2 ~hows the computer simulation mean monthly reservoir storage, <br /> <br /> <br />drawdown releases below the dam, minimum storage, maximum water level drawdown, <br /> <br /> <br />and minimum releases below the dam. <br /> <br />- 35 - <br /> <br />