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body of the San Juan Mountains and all of the recognized mineral lands, The southern boundary of this tract is the present northern boundary ofthe Ute Mountain Ute and Southern Ute Indian Reservations. After the land purchase and cessation of open warfare, water developments on the Mancos, La Plata, and Animas Rivers soon reached present size. Settlement along the Florida and Pine Rivers did not reach full swing until the Southern Ute Indian Reservation was opened to homesteading in 1899, as most of the desirable land in these basins was within the Reservation. Agriculture was well established along the Florida and Pine Rivers before the 1900's, long before construction of Federal projects. Until the 1930's, almost all water development-related infrastructure, except major storage facilities, was privately developed pursuant to adjudicated State water rights. In Colorado, privately owned distribution systems that pre-date current Federal projects now receive supplemental water from the Florida, Dolores, Pine River, and Mancos Projects. All irrigation in the Animas and La Plata Basins is through privately developed facilities. The water supplies of the Upper Basin were allocated under the Upper Colorado River Basin Compact of 1948. Under that compact the State of Colorado is allocated 51.75 percent, Utah is allocated 23 percent, Wyoming is allocated 14 percent, New Mexico is allocated 11.25 percent, and Arizona is allocated 50,000 acre-feet of water per annum, In 1956, the Colorado River Storage Project Act (CRSP) authorized the construction offour major storage units in the upper Colorado River Basin, including Navajo Dam and Reservoir on the San Juan River. The Navajo Reservoir, the primary storage facility on the San Juan River with a storage capacity of 1,708,600 acre-feet, was completed in 1963 to serve numerous authorized purposes. It provides stored water to meet a potential Colorado River Compact call on the Upper Basin, to allow the effective operation of the NIIP, and to provide a regulated water supply to meet seven Reclamation municipal and industrial water contracts totaling 17,230 acre-feet annually, The largest of these contracts is with the Public Service Company of New Mexico for 16,200 acre-feet. The two biggest water projects in the San Juan River system are NIIP and the SJCP, discussed above relative to Navajo water rights. Other Federal Reclamation projects in the San Juan Basin include: (I) the Pine River Project constructed between 1937 and 1941 on the Southern Ute Reservation, The response to an irrigation water shortage, the Pine River Project is not a typical Reclamation project. The Indian Irrigation Service conducted the Project's planning. The BIA owns an undivided one-sixth interest in the Project for the benefit of the Southern Ute Indian Tribe. Southern Ute allottees, and a number of non-Indian irrigators. Responsibility for the Project was transferred to Reclamation in August 1936, with construction approved by the President in 1937. Construction ofVallecito Dam and Reservoir, with a total capacity of 129,700 acre-feet, was initiated in December 1937. The Vallecito Reservoir stores spring flood water to provide a supplemental water supply to about 13,000 acres of Southern Ute Indian lands and about 41,000 acres of non- Indian land. Irrigation water is distributed through privately owned systems or through systems under the jurisdiction of the BIA. Project facilities are operated by the Pine River Irrigation District. 11