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278,000 acre-feet of annual consumptive use. The North Gila Valley, Yuma Mesa, and Yuma (South Gila) Irrigation Districts are included under the Yuma Mesa Division of the Gila Project. A total of 37,187 acres is estimated to be the average acreage developed by the districts within this division. Consumptive use would average 150,000 acre-feet per year and is limited to 250,000 acre-feet under the terms of the Ak-Chin Settlement Act. City of Yuma-A contract was signed with the city of Yuma, Arizona, for an annual diversion of 50,000 acre-feet per year. The city of Yuma is expected to consume 12,000 to 15,000 acre-feet per year. In 1993, the city of Yuma consumptive use was about 13,000 acre-feet. Yuma Project, Valley Division-The Valley Division of the Yuma Project and adjacent land of the Yuma Auxiliary Project are anticipated to supply water to about 53,000 acres ofland. About 50,000 acres are within the boundaries of the Valley Division (Yuma County Water Users Association), and about 3,000 acres are within Unit B Irrigation and Drainage District (the Yuma Auxiliary Project). The measured return flow from lands of the Gila Project, Yuma Mesa Division; Yuma Project, Valley Division; and Unit B is commingled to some extent. The decree accounting does not credit unmeasured return flow for these water users. Cocopah Indian Reservation-The Tribe has a water right to irrigate 1,524 acres of land or divert 9,707 acre-feet of water, whichever is less. In 1993, the Cocopah Indian Reservation consumptive use was about 11,600 acre-feet. Other Uses Below Imperial Dam-The many other users with water use contracts are estimated to have a consumptive use in the future of about 10,000 acre-feet. California City of Needles-The city of Needles has a present perfected right to a consumptive use of 950 acre-feet per year. In 1993, it was estimated the city diverted 3,700 acre-feet. A program has been developed under the Lower Colorado Water Supply Act to provide Needles, and other noncontract users along the Colorado River, an assured water supply. Under this program, water would be pumped from wells into the All American Canal for exchange with the Imperial Irrigation District and the Coachella Valley Water District. This would allow the city of Needles and others with Lower Colorado Wa,ter Supply delivery contract to pump an equal amount of water annually from the Colorado River. Reclamation would accomplish the plan by installing wells adjacent to the All American Canal in the sand dune area west of Yuma. The city of Needles then would be allowed to continue the existing use of Colorado River water by paying its share of construction, operation, and maintenance costs of these wells under contract with Reclamation. Metropolitan Water District-In 1993, the Metropolitan Water District used approximately 1,204,000 acre-feet. Future use may be reduced when California is limited to 4.4 million acre-feet per year after the Central Arizona Project becomes more fully developed. 40