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Show PROBLEMjS OF IMPERIAL VALLEY AND VICINITY. Ill Discharge Green River at town of Green River, Wyo., average (1895- Acre-feet. 1906; 1915-1920)..........................\'.........................1,466,000 Estimated increase of irrigation during period 1895-1920 is 110,000 acres; if cycle were repeated, discharge would be less; 55,000 acres average at 1.5 acre-feet...................................................... 83,000 -----------1------------- Present average discharge....................'................... 1,383,000 Assumed near future irrigation (items 2, 3, and 4 in foregoing summary) 180,000 acres'at 1.5.........'........................................ 270,000 _________________________________i Total............................................................. 1,113,000 To determine the water available for new projects it will be necessary to estimate the probable monthly change in discharge caused by the extension of irrigation as "noted above. Average discharge, Green River. Estimated change by past and expected future diversions 235,000 acres. Discharge partly available for new projects. Aug. 20-May 15. May 15-31...... June............ July............ Aug. 1-20....... Acre-feet. 470,000 139,000 476,000 292.000 , 89,000 Acre-feet. +141.000 - 40,000 -190,000 -183,000 - 77,000 Acre-feet. 611;000< 90, em 286 0M> ' 109,000 12,000 Total. 1,466,000 1,117,000 However, only that part of the winter discharge which can be retained in reservoirs will be available for new projects. There are no reservoir sites known on the main stream by which the return flow can be caught and all reservoirs on small tributaries are assumed to be and will be used for irrigation on those tributaries, if it develops as herein outlined, leaving only reservoirs on New Fork River and at headwaters of Green River available. There are a number of lakes on the above headwaters listed in Wyoming cooperative report which can be used as reservoirs. Nothing is known of dam foundations. Such lakes are often of glacial origin which makes the possibility of using them as reservoirs very doubtful. If they are found infeasible, future irrigation possibilities will be reduced from the figures used here. The following are listed: Capacity in acre-feet. On Green River: Green River Lake.......... 10,000 On New Fork River: New Fork Lake........___ 22,000 Willow Lake............... 19,000 Fremont Lake...........___100, 000 On New Fork River-Continued. Half Moon Lake............ 95,000 Burnt Lake!............... 23,000 Boulder Lake___.......... 130,000 Total....................499, 000 The discharge of New Fork River .and Green River at the gaging stations nearest below these lakes is estimated by comparison with Green River at Green River, Wyo., to be 139,000 acre-feet out of the irrigation season, but this is probably too high because in the lower altitude of Green River town the winter run-off should be comparatively larger. Also the discharge at the lakes should be less than at |
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Original book: [State of Arizona, complainant v. State of California, Palo Verde Irrigation District, Coachella Valley County Water District, Metropolitan Water District of Southern California, City of Los Angeles, California, City of San Diego, California, and County of San Diego, California, defendants, United States of America, State of Nevada, State of New Mexico, State of Utah, interveners] : |