OCR Text |
Show -3- as the same appears in the official records on file in my office. Given under my hand and Official Seal this 6th Day of July, A. D. 1956. [Signed] J. E. Whitten State Engineer [Signed] C. C. Hezmalhalch [State Engineer of Colorado Seal] Introduction There are produced in the San Luis Valley about 1,-640,000 acre feet of natural runoff, of which amount 240,000 acre feet are produced in the so-called "dead area." The outflow from the San Luis Valley, allowing for depletion, is about 560,000 to 575,000 acre feet per annum. This indicates a consumption of some 1,-000,000 to 1,100,000 acre feet of water. There are irrigated in the San Luis Valley about 500,000 acres of land. If the total loss of water were charged to the irrigated land, a consumptive use of over 2 acre feet per acre would be indicated. In interstate negotiations it has been contended by representatives for Colorado that only about one-half of the water is consumed in the San Luis Valley is consumed by the irrigated lands, the balance being lost through evaporation from seeped areas. It has been thought that by proper regulation of the natural water supply through reservoirs and by the drainage of lands that have gone to seep, at least 50% more land could be irrigated in the San Luis Valley without increasing the consumption of water. In making the above assumptions, it was necessary to assume a consumptive use value based upon values as determined for |
Source |
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] : California exhibits. |