OCR Text |
Show -2- Question 3. What are the present, the probable, and the maximum possible number of acre-feet of water that may be used for irrigation from the Colorado River system in each of the four States of the upper division? Answer 3. The following table answers the question, the quantities being in acre-feet: Use of Colorado River, upper basin Acreage Consump- Consump- Total con- irrigated, tion of New tion of Total sumption Upper basin 1920 water acreage water acreage of water Colorado 740,000 1,184,000 1,018,000 1,527,000 1,758,000 2,711,000 New Mexico 34,000 54,400 483,000 724,500 517,000 778,900 Utah 359,000 574,400 456,000 684,000 815,000 1,258,400 Wyoming 367,000 587,200 543,000 814,500 910,000 1,401,700 Total 1,500,000 2,400,000 2,500,000 3,750,000 4,000,000 6,150,000 Of the above "new acreage" total of 2,500,000 acres, it is estimated in Senate Document 142, page 33, that a total of 1,008,000 acres will be irrigated in the upper basin in the near future. Question 4. If the maximum quantity of water is diverted for irrigation in the upper basin, how much of it will return to the river by seepage and drainage and be available for use at Lee Ferry? Answer 4. Above figures are based upon an average figure for "consumptive use"; that is, diversion minus return flow, and are believed to be large enough to include evaporation from local reservoirs which will be used for irrigation. They therefore represent the net reduction in the flow of the river to be anticipated under the assumed conditions. |
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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] : California exhibits. |