State of Arizona, complainant v. State of California, Palo Verde Irrigation District, Imperial Irrigation District, Coachella Valley County Water District, Metropolitan Water District of Southern California, City of Los Angeles, California, City of San Diego, California, and County of San Diego, California, defendants : the United States of America and State of Nevada, interveners : State of Utah and State of New Mexico, impleaded defendants : report / Simon H. Rifkind, special master

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95 (a) Havasu Lake National Wildlife Refuge. This Refuge is the largest in the Lower Colorado River Basin; it extends along both sides of the Colorado River from Needles, California to Parker Dam. The Bureau of Reclamation is channelizing the River in this area and when channelization is complete the natural marsh areas which have served as wildlife refuges will have been destroyed. The Fish and Wildlife Service has formulated a plan to substitute controlled marsh and irrigated land for areas drained by the channelization program.1 (b) Imperial National Wildlife Refuge. Situated along the Colorado River from a point south of Imperial Dam to the Cibola Valley to the north, this Refuge contains approximately 4,000 acres. The channelization program of the Bureau of Reclamation will also affect this Refuge and substitute marsh areas are planned by the Fish and Wildlife Service. These plans include the development of substitute food plots. Some 35 food plot areas have been selected which range from 20 to 300 acres in size. The plots will be leveled and irrigated and crops will be grown.2 (c) Salton Sea National Wildlife Refuge. This Refuge was established in 1930 and includes public and leased private lands.8 It is operated primarily to prevent depredation in the Imperial Valley. This is accomplished by putting approximately 4,000 acres a year to grain which is available for migratory birds just prior to or during the harvesting season on adjacent farm lands. Water for this purpose is purchased from the Imperial Irrigation District.4 JTr. 15671-15672 (Taylor); see U. S. Ex. 2618. 2Tr. 15693-15694 (Taylor); see U. S. Ex. 2621. 3 See U. S. Exs. 2604, 2611-2612. <Tr. 15796-15797 (Taylor).