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I, I ~~!'\ ,44'" '.'1 "I I Some used tion of the supply would be used when available. The remainder would be as the needs developed. A more detailed breakdown of water alloca- by State and Indian and non-Indian users is shown on Table A-l, 4. Construction Features and Project Operation a. General The primary construction features of the project would be the Ridges Basin Reservoir system and the Southern Ute Reservoir system. The major feature of each system would be an offstream reservoir. Ridges Basin Reservoir, the larger of the two, would be located west of the Animas River and about 3 miles southwest of the town of Durango. Southern Ute Reservoir would be located east of the La Plata River on the Colorado-New Mexico State line. The Ridges Basin Reservoir system, in addition to the reser- voir, would consist of the Durango Pumping Plant, Ridges Bas in Inlet Conduit, Durango Municipal and Industrial Pipeline, Ridges BaainPumping Plant, the Dry Side Canal, Long Hollow Tunnel, and the La Plata Diversion Dam. The Durango Pumping Plant would pump water from the Animas River through the Ridges Basin Inlet Conduit into Ridges Basin Reservoir. The stored water would be available for project use from three points within the reservoir--the inlet conduit, the outlet works of Ridges Basin Dam, and the west end of the reservoir through the Ridges Basin Pumping Plant. Releases would be made for the Durango area from the inlet conduit to a' treatment plant, to be constructed by the water users near the reservoir, then piped to the city's distribution system through the project's Durango Municipal and Industrial Pipeline. For municipal and industrial users in New Mexico, releases would be made back to the Animas River through the outlet works in the dam. Some New Mexico users would divert water'directly from the San Juan River upstrealll of that river's confluence with the Animas River. Project water would then replace the diverted water for present users downstream on the San Juan River. Existing nonproject facilities would be uaed to divert and treat project water for New Mexico users. ~/ .,":"- ;,/;; 0' , ..::., Water for irrigation in Colorado and New Mexico and for munici- pal and industrial use in the western part of the project area in Colo- rado would be pumped from the west end 0 f the reservoir by the Ridges Basin Pumping Plant into the Dry Side Canal, which would head in a southwest to west direction and carry water to the La Plata and Mancos River drainages. Integral to the canal would be the Long Hollow Tunnel, which would be constructed through the divide that separates the Animas and La Plata River drainages. The canal would extend westward to provide water for irrigat ion on the Ind ian and non-Ind ian land in Colo- rado and for industrial use by the Ute Mountain Ute Indian Tribe in developing coal resources on the reservat ion. Water would be released from the canal for municipal and industrial use by rural Colorado A-3