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Show 122 PROBLEMS OF IMPERIAL VALLEY AND VICINITY. PLAN NO. 2. In addition to Hayden Mesa, this covers an area of 10,000 acres in Twenty Mile Park, which is more easily reached than Hayden Mesa, giving a total of 50,000 acres. Irrigation 'plan.-Diversion from Williams Fork, 6 miles farther upstream than plan 1, thence 20-mile canal containing one siphon to Dunkley reservoir, on Fish Creek. From the reservoir water is taken direct to Twenty Mile Park, and through a 1-mile tunnel it reaches Hayden Mesa. Water supply.-This is secured from Williams Fork, Fish Creek, and Trout Creek. From Williams Fork the drainage area tributary is 25 square miles less than plan 1, which at 500 acre-feet per square mile will leave an average of 80,000 acre-feet, of which 73,000 acre-feet may come during the open season. Drainage area of Fish Creek is 32 square miles, which at 500 acre-feet per square mile would yield 16,000 acre-feet. From Trout Creek a supply canal intercepting 12 square miles can be built to the reservoir, which at 400 acre-feet per square mile divertible would yield 5,000 acre-feet. Total supply {estimated) Acre-feet. Williams Fork............................................................ 73, 000 Fish Creek............................................................... 16, 000 Trout Creek.......;...............................,. . ................... 5, 000 Total.............................................................. 94, 000 Demand.-For 50,000 acres the demand is estimated to be 100,000 acre-feet. Some return flow will be available on the project and some supply will come from creeks on the project so that the supply may be approximately equal to that demand. Although this is extremely doubtful, the full 50,000 acres have been taken as an ultimate possibility. Storage.-Storage required is estimated to be 50,000 acre-feet on the average year, Dut about 70,000 should be provided for hold-over. Reservoirs.-Known capacity available is: Acre-feet. Dunkley site............................................................. 50, 000 Bunker Basin............................................................ 8,000 Total.............................................................. 58, 000 Conclusion.-Plan No. 2, while more expensive than plan No. 1, will provide more water supply and better storage facilities. ELK RIVER PROJECT. Acreage, 140,000. Temperature, mean annual, 42°. Precipitation, mean annual, 13 inches; irrigation season, 4 inches. Elevation, 6,500 feet. Between frosts (summer), 85 days. Transportation, wagon haul, 35 to 70 miles to either Craig on the Denver & Salt Lake Railroad on the south, or Wamsutter on the Union Pacific in the north. Irrigation plan.-Gathering canal taking the headwater of Elk River to reservoirs on the headwaters of Little Snake River; thence supply canal to Columbus Mountain reservoir site on Slater Creek. |
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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] : |