OCR Text |
Show PROBLEMS OF IMPERIAL VALLEY AND VICINITY. 135 LAKE FORK. The discharge of Lake Fork at Myton, which is below practically-all irrigation, has been recorded during the following periods, 1901-1903, 1908-1910, 1912-1920: Average annual discharge. Acre-feet. October to April................................................._______ 50,000 May..................................................................... 27,000 June................................................................... 60,000 July.................................................................... 15,000 August.................................................................. 6.000 September..............................,................................ 7,000 Total............................................................. 165,000 In comparatively high years the discharge is all diverted by July 20, and in extremely Tow years there is a surplus only during the peak of the flood period, which may last for 15 to 30 days. Parkhili gives the irrigable acreage at 71,000, while the Federal court commissioner shows that 50,500 acres were irrigatod in 1918. Known reservoir sites exist as follows: Acre-feet. Moon Lake.............,...........................i..................... 38,000 Brown Duck Lake (probably not more than)................................. 2,000 Total...................................................... .•.......40,000 To fill these, there is the winter discharge-October to April-and the flood undivertible at present, which in the lowest year, 1919, was 19,000 acre-feet and in the next lowest was 35,000 acre-feet. In other years there is much more, so that it may be assumed that water supply is sufficient for the 20,500 acres of additional irrigable land. In the ordinary low year the entire discharge of the river is now diverted after July 1, so that all supply for new acreage must come after that time from storage. The demand per acre is estimated as follows: Acre-foot May........................................................................0. 60 June.......................................................................75 July......................................................:.................75 August......................................................................60 September...................................................................15 Total................................................................ 2.85 This means that 1.50 acre-feet per acre must come from storage, or for the 20,400 acres the total storage required is 32,000 acre-feet. Acres. Present irrigated......................................................... 50,500 Future extension.............................................;.............20, 500 Total.........................................................\___71,000 |
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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] : |