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<br />Yuma Project, Valley Division
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<br />The Valley Division ofthe Yuma Project and
<br />adjacent land of the Yuma Auxiliary Project are
<br />anticipated to supply water to about 53,000
<br />acres ofland, About 50,000 acres are within the
<br />boundaries ofthe Valley Division (Yuma County
<br />Water Users Association), and about 3,000 acres
<br />are within Unit B Irrigation and Drainage
<br />District (the Yuma Auxiliary Project), The
<br />measured return flow from lands of the Gila
<br />Project, Yuma Mesa Division; and Yuma Project,
<br />Valley Division; and Unit B is commingled to
<br />some extent, The decree accounting does not
<br />credit unmeasured return flow for the water
<br />users in these or any other projects,
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<br />Cocopah Indian Reservation
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<br />The tribe has a water right to irrigate 1,524
<br />acres ofland or divert 9,707 acre-feet of water,
<br />whichever is less,
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<br />Other Uses Below Imperial Dam
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<br />The many other users with water use contracts
<br />are estimated to have a consumptive use in the
<br />future of about 15,000 acre-feet,
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<br />California
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<br />City of Needles
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<br />The city of Needles has a present perfected right
<br />to a consumptive use of 950 acre-feet per year,
<br />In 1991, it was estimated the city diverted
<br />3,300 acre-feet, A program has been developed
<br />under the Lower Colorado Water Supply Act to
<br />provide Needles, and other noncontract users
<br />along the Colorado River, an assured water
<br />supply, Under this program, water would be
<br />pumped from wells into the All- American Canal
<br />for exchange with the Imperial Irrigation
<br />District and the Coachella Valley Water District,
<br />This would allow the city of Needles and others
<br />with Lower Colorado Water Supply delivery
<br />contract to pump an equal amount of water
<br />annually from the Colorado River, Reclamation
<br />would accomplish the plan by installing wells
<br />adjacent to the AIl-American Canal in the sand
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<br />LOWER BASIN DEPLETIONS 33
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<br />dune area west of Yuma, The city of Needles
<br />then would be allowed to continue the existing
<br />use of Colorado River water by paying its share
<br />of construction, operation, and maintenance
<br />costs ofthese wells under contract with
<br />Reclamation,
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<br />Metropolitan Water District
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<br />In 1991, the Metropolitan Water District used
<br />approximately 1,252,000 acre-feet, Future use
<br />may be reduced as indicated in the table when
<br />California is limited to 4.4 maf per year after the
<br />QAP becomes more fully developed,
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<br />Fort Mohave Indian Reservation
<br />
<br />There are 2,119 acres of Fort Mohave Indian
<br />Reservation land located in California, Using an
<br />estimated consumptive use of 4 acre-feet per
<br />acre, this land is entitled to approximately
<br />9,000 acre-feet of consumptive use per ;xear, In
<br />1991, the Reservation diverted about
<br />19,700 acre-feet but will be reduced when
<br />California is limited in its use of Colorado River
<br />water, The estimated consumptive use for 1991
<br />was 11,000 acre-feet,
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<br />Chemehuevi Indian Reservation
<br />
<br />The Chemehuevi Indian Reservation, located
<br />above Parker Dam, is allocated water by the
<br />Supreme Court Decree to irrigate 1,900 acres of
<br />land in California, with a maximum annual
<br />diversion from the mainstream of the Colorado
<br />River of 11,340 acre-feet, The consumptive use
<br />required for irrigation of these lands is
<br />estimated to be 4 acre-feet per acre, which would
<br />result in a mainstream depletion of about
<br />7,600 acre-feet annuaIly, The lands that are
<br />classified as irrigable are not feasible for
<br />farming at this time, The reservation is
<br />expected to develop 1,000 acre-feet of
<br />consumptive use for M&I and/or irrigation
<br />purposes by 2000,
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