Summary Report - Central Arizona Project with Federal Prepayment Power Arrangements

Summary Report, Central Arizona Project with Federal Prepayment Power Arrangements, February 1967, page 19Additional water would be made available for use in the area by reuse of percolation, waste, and effluent flows originating from project supplies. This secondary utilization of project water, however, is not provided for in the physical plan or considered in the economic or financial analyses. The tabulation which follows presents a summary of the project water supply studies for the representative years of 1975, 1990, 2000, and 2030. Year 1975 is assumed to be the initial year of full project operation, while year 2030 is the point at which the water supply available to the Lower basin would become stabilized under the assumptions and projections adopted relative to Upper Basin depletions. The coordination of conservation and control facilities involving surface-water supplies would be essential to realization of the optimum benefits from the introduction of an import supply from the Colorado River. The construction of the Orme, Buttes, Charleston, and Hooker Reservoirs would provide operational and regulatory control of surface water to make exchanges possible. The additional regulation obtained would make possible higher utilization efficiencies in the conveyance and distribution systems. Control of stormflows and improvement of irrigation practices could provide an additional usable water supply. Through this hydrologic coordination, comprehensive water conservation would be achieved by a combination of water salvage, river 20Epson Perfection 4870 Photo, 400 dpi, 8 bit, 842,731 byte