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Show PROBLEMS OF IMPERIAL VALLEY AND VICINITY. 163 Water supply find irrigation requirements. , 7 [Acfe-feet.) Month. Supply- Prior rights 10,000 acres. Balance for project. Project demands,. Demand on storage. April...... May....... June....... July....... August___ September. Total 8,600 27,400 27,600 12,100 3,700 2,800 1,600 4,000 6,000 4,000 3,000 1,400 7,000 23,000 21,600 8,100 700 1,400 2,400 6,000 9,000 6,000 4,500 2,100 3,800 706 82,200 20,000 62,200 30,000 ,4,500 In a low year like 1918 the demand on storage* increases to 9,500 acre-feet. , ' -r'..':.' Storage.-Allowing for unavoidable waste past the headgates in times of high discharges 8,000 acre^feet of storage would be necessary to prevent excessive .shortages, in low years. Tl\e existence of this amount of available storage at reasonable cost is doubtful and the project if constructed will probably run short of water frequently in late summer. LA PLATA MESAS PROJECT. Irrigable area, 40,000 acres. ¦ Mean annual temperature, 46°. Mean annual precipitation, 15 inches. ¦ Precipitation in growing season, 8 inches. Elevation, 6,200 to 7,000 feet. Interval between killing frosts 130 days (summer). ¦ Transportation, Denver '$, Rio Grande Railroad, narrow gage, 10 to 20 miles from land. .Nearest station; Fort Lewis. ; Irrigation plan.-A 200 second-foot transmountain diversion canal at an elevation of 7,600-7,700 will convey1 waters from Her-mosa, Lightner, ancl Junction creeks, in the Anhnas draiiiage area to the La Plata drainage, crossing the Animas-La Plata divide near Pine Ridge, and emptying into JL<a Plata River near Fort Lewis. The total length of this canal will be 60 miles including 1 mile of siphons and 6 to 7 miles of flume. It is also planned to construct a new ditch or enlarge an existing ditch for the purpose of conveying La Plata River water to Cherry Creek near Mayday for the purpose of reclaiming lands tributary to Cherry Creek, the water so diverted from La Plata River to be replaced with Animas water. This scheme avoidsithe necessity of a long canal across the La Plata drainage to irrigate lands in the western part of this area with Animas water. A 5,000 acre-foot reservoir is proposed on Hermoaa Creek to build up the total diversion from this drainage and additional storage is planned in the La Plata drainage area to use waters now being wasted and to permit of the operation of the diversion «anal from Hermosa Creek for a greater portion of the year. The lands to be irrigated lie in scattered areas on the mesas between the various tributaries of the La Plata River. |
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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] : |