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<br /> <br />. <br /> <br />CHAPI'ER II <br /> <br />COMPREHENSIVE PLAN <br /> <br />Normal monthly <br /> <br />project requirements for releases <br />(Unit--l.OOO acre-feet) <br />Continuous <br />200 second- <br />foot release <br />for stream <br />fishery <br />and power <br />12 <br />12 <br />12 <br />12 <br />12 <br />12 <br />12 <br />12 <br />12 <br />12 <br />12 <br />12 <br />144 <br /> <br />at Juniper Dam <br /> <br />Month <br />January <br />February <br />March <br />April <br />May <br />June <br />July <br />August <br />September <br />October <br />November <br />December <br />Total <br /> <br />Average <br />irrigation <br />diversion <br />requirements <br /> <br />Firm <br />peaking <br />power <br />release <br />23 <br />23 <br />23 <br />23 <br />23 <br />23 <br />23 <br />23 <br />23 <br />23 <br />23 <br />23 <br />276 <br /> <br />Total <br />35 <br />35 <br />35 <br />35 <br />90 <br />141 <br />149 <br />139 <br />93 <br />35 <br />35 <br />35 <br />857 <br /> <br />55 <br />106 <br />114 <br />104 <br />58 <br /> <br />]j437 <br /> <br />. <br /> <br />11 Includes requirement for evaporatiDnlosses at Artesia Reservoir <br />which-are not included in table on page 38. <br /> <br />In actual operation the monthly release for peaking power at a firm <br />monthly plant factor would vary, depending on the actual reservoir water <br />surface level and corresponding power head. from about 25.000 acre-feet per <br />month at the minimum power head to about 21,000 acre-feet at the maximum <br />power head. The firm release of 23,000 acre-feet monthly used in the reser- <br />voir operation is therefore a reasonably close approximation for the recon- <br />naissance water supply studies and estimates. <br /> <br />As a matter of simplicity for the reservoir operation, the estimated <br />annual net reservoir evaporation losses in excess of present consumptive use <br />of water in the reservoir basin are all accounted for in the summary opera- <br />tion as a lump sum during the drawdown season. <br /> <br />To show how the most efficient utilization of available water in high <br />runoff years could be obtained for energy production, advance water releases <br />in anticipation of reservoir spills were made in the operation to augment <br />normal energy generation by minimizing spilling in excess of power-generating <br />capacity. In actual operation the advance releases would be based on avail- <br />able reservoir storage space and a procedure of progressive runoff fore- <br />casting usually beginning in February and extending through June. The fore- <br />casting would be made on a conservative basis to give reasonable assurance <br />that the reservoir would be filled by the end of the filling seaSon. Thus <br />in many of the months when advance power water releases would be made the <br />powerplant would be operating at a monthly plant factor of 80 to 100 percent. <br /> <br />. <br /> <br />41 <br />