AZ vs. CA:25 California Exhibits, Vol. XXV; Nos. 7501-7859

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10 CENTRAL ARIZONA PROJECT Therefore, to avoid the very real danger to the entire economy of the State of Arizona and to Arizona's contribution to the national welfare and to the Treasury of the United States in income taxes, it is essential that the central Arizona project be expedited in every way humanly possible. Arizona has a contract with the United States whereby the United States agrees to deliver for use in Arizona 2,800,000 acre-feet of apportioned water, plus one-half of the surplus, in the main stream of the Colorado River in the lower basin, less, however, one twenty-fifth of such surplus which Arizona has agreed may be utilized in Nevada in the event Nevada should ever be able to use it, all subject, of course, to the availability of such water under the Colorado River Compact and the Boulder Canyon Project Act. The Colorado River Compact apportions to the lower basin, which includes parts of California, Nevada, New Mexico, and Utah and almost all of Arizona, the exclusive beneficial consumptive use of 8,500,000 acre-feet of such apportioned water per year* California is forever limited by her self-limitation act adopted by her legislature in March 1929 to 4,400,000 acre-feet of such apportioned water. Arizona has agreed that Nevada may use 300,000 acre-feet of such apportioned water, plus one twenty-fifth of the surplus available in the lower basin. The comprehensive Report of the Bureau of Reclamation on the Colorado River, issued in March 1946, indicates that the total ultimate possible use of water of the Colorado River system in those parts of Utah and New Mexico which are in the lower basir, including all present and possible future uses, will amount to not more than 130,000 acre-feet per year. There is thus left 3,670,000 acre-feet of apportioned water per year, which cannot be lawfully used anywhere except in Arizona. Arizona is using out of the main stream of the Colorado River and the tributaries of the Colorado River in Arizona, a grand total of 1,408,000 acre-feet of water per year. There is left for Arizona of the apportioned water in the main stream of the Colorado River 2,262,000 acre-feet for additional beneficial consumptive use in Arizona. This quantity of water is apportioned water and does not include any water legally usable in any other State either in the upper basin or in the lower basin. Ample provision has been made for the ultimate possible uses in Nevada and those portions of Utah and New Mexico which are in the lower basin. Last year Congress reauthorized the Gila project and the adjustment of its boundaries to include the Welton-Mohawk division and exclude part of the Yuma-Mesa land. That project, when constructed to full development, is limited to the consumptive use of 600,000 acre-feet of water per year, including 34,000 acre-feet of present uses. It is estimated by your report on the central Arizona project that the beneficial consumptive use of water from the main stream of the Colorado River on the central Arizona project will be 1,077,000 acre-feet per year. Deducting the 566,000 acre-feet for additional use on the Gila project and 1,077,000 for the Central Arizona project from the 2,262,000 acre-feet to which Arizona has a clearly established right leaves a balance of 619,000 acre-feet of apportioned main-stream water to which Arizona has a clearly established right for future and further