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0n2076 ARIZONA v. UALIFORNIA AND PACIFIC SOUTHWEST WATER PROBLEMS 79 lower basin to transport water to areas of deficiency, and to author- ize a coordinated development of the power resources of the lower basin in order to furnish power for pumping water into and in conveyance works and for sale as a means of financial assistance to the project herein authorized and to those which the Congress may hereafter authorize for the importation of water into the Colorado River basin. (Sec. 101). Mr. Ely has described some of the other major changes from the Udall bill: 1. Sources ot suppLementaL water.-The "feasibility study" which the plan authorizes for a project to import 1.2 million acre- feet from northern California rivers is broadened to include other possible sources, the goal is redefined as the elimination of deficien- eies in both Uppcr and IJower Basins, so that requirements in the Lower Basin can be fully met without eurtailment of the Uppcr Basin's prospeets of using 7.5 million aere-feet annually, and the secretary is direeted to submit his report within 3 years. No source is preselected. (If Congress does designate a specifie souree, such as northern California rivers, it must neeessarily do so on a contingent basis, to become inoperative if the 3-year survey shows that other sourees are more feasible.) 2. Importation direcUyinto the CoLorado..-Water imported, whether from northern California rivers or elsewhere, would be delivered directly into the Colorado River, not, as the Udall Plan proposes, at Hayfield on the Metropolitan aqueduct and in Imperial Valley via an aqueduct down the interior of California. Recent studies indicate that even if northern California sources are se- leeted, water may be delivered to sOlJthern California projeets more cheaply via an aqueduet to the Colorado River than through the inland mountains. . . .1. One of the key features of the projeet is the "Transmountain Divi- sion" which would consist of projects as authorized by Congress in the future to "import water into the Colorado River Basin." Thus, while reeognizing that the water supplies of the Colorado River Basin are inadequate, S. 2760 does suggest that replacement water supplies be brought into the Colorado River Basin from outside the basin. To accomplish this objective the proposal eontemplates the investigation and report by the Secretary of the Interior within three years after the tlffective date of the act described above to produee (1) his estimate of the long-range water supply available for eonsumptive use in the Upper and Lower Basins of the Colorado River; (2) water requirement of the Upper and Lower Basins at present, and as estimated for the years 1975-2000-2040 and under ultimate anticipated eonditions; (3) the present and antieipated defieieneies of water supply for the quantities of water whieh, imported into the Colorado Basin, would eliminate these defieieneies; (4) the quantities of water which imported into the Colo- rado River Basin would make possible the use of 7.5 million acre-feet a year in the Upper Basin and elimiuate present and anticipated defieien- cies in the Lower Basin, and alternative sourees from which water 16 Eearings on S. 1658, Part II, op. cU., at 306-307.