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- k. City of Yuma The city of Yuma consumptively used 10,800 acre-feet of water in 1984 and is expected to use 12,500 acre-feet by the year 1990. ...~ -..I '-' C-. 1. Yuma project and Yuma Auxiliary Project 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 of land. 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 District (the Yuma Auxiliary Project). Estimated consumptive use will amount to 212,000 acre-feet per year. Mesa Division some extent. water user in The measured return flow from lands of the Gila Project. Yuma and Yuma Project, valley Division and Unit B is commingled to The decree accounting now credits unmeasured return flow for the these projects within broad limits. m. Cacapah Indian Reservation The tribe has a water right to irrigate 431 acres of land or about 1,700 acre-feet of consumptive use. In 1984, its water use amounted to about 4,300 acre-feet. n. Other Uses Below Imperial Dam It is estimated that the many small users with water use contracts will have a consumptive use ranging from about 28,000 acre-feet in 1990 to 15,000 in 2010. o. Bullhead City There is a contract for 8,200 acre-feet per year included in other uses below Imperial Dam. 3. California a. City of Needles The city of Needles has a present perfected right to a consumptive use of 950 acre-feet per year. In 1984, it was estimated the city consumptively used 2,800 acre-feet. At this time, Needles does not have a water use contract with the Secretary of the Interior and so possibly could lose this source in the future if a contract is not signed. A proposed plan was developed under the Lower Colorado Water Supply Study to provide Needles and other noncontract users an assured water supply. under this plan, 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 to pump an equal amount of water annually from the Colorado River. The plan would be accomplished by Reclamation installing wells along the southwest side of the All-A~rican 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 a portion of the operation and maintenance costs of these wells. VI-24 -