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UPPER BASIN DEPLETIONS 35 Navajo Reservoir Contracts Public Service Compan~ of New Mexico-This contract provides water deliveries from Navajo Reservoir for use at the San Juan Powerplant. All four generating units are in operation. Water use is about 24,000 acre-feet a year. The contract provides for delivery of 16,200 acre-feet. The remaining water used at the plant is purchased from the private right of Utah International, Inc. Thus, a value of 16,000 acre-feet was used for the Public Service Company of New Mexico and an additional value of8,000 acre-feet has been included in the total for Utah International, Inc. (private right). The contract for water delivery from Navajo Reservoir terminates December 31, 2005. By letter dated July 10, 1985, the New Mexico Interstate Stream Commission recommended to the Secretary of the Interior that the existing contract with the Public Service Company of New Mexico be extended to the year 2025. Utah International, Inc. -Utah International, Inc. will furnish water to potential customers for industrial uses in the area. The New Mexico Interstate Stream Commission projected use in 1990 at 10,000 acre-feet per year. This use will increase to 35,000 acre-feet by the year 2000 and continue through the year 2030. At present, the contract for water delivery tenninates August 31,2022. Gallup-Navajo Indian Water Suppl~ Project-The Bureau of Reclamation, Southwest Region, is currently conducting project investigations to supply water to Gallup, Navajo Indian communities and the proposed New Mexico Generation Station. Total project needs identified at this time are 56,500 acre-feet per year, of which close to 100 percent would be depleted. Reclamation has been asked not to address the legal water availability issues of the project. So until a viable plan is identified and accepted, and until water right and water availability issues are agreed upon, this report will use the values published in the Regional Director's 1984 Planning Report. Not Identified-The remaining block of Navajo Reservoir water supply will be marketed by the United States and will be allocated in consultation with the New Mexico Interstate Stream Commission. Colorado Miscellaneous Additional Depletions Values used for 1990 represent additional depletions that have been assumed to develop since the Comprehensive Framework Study (1965 level) estimates were prepared. They have not been specifically identified but are included to bring the Bureau of Reclamation estimates of present uses more in line with State estimates. The 1990 values of "Miscellaneous Additional Depletions" may be either real additions or differences resulting from new depletion accounting procedures. Colorado depletion values through the year 2010 were provided by the Colorado Water Conservation Board, the Colorado River Water Conservation District, or were estimated by Reclamation staff. Denver Expansion Water for expanded Denver needs since 1965 has been met by increased diversions through Moffat and Roberts Tunnels. The average annual recorded diversion through both tunnels for the period 1978-82 was 151,000 acre-feet. The combined 1965 normalized diversion was 93,000 acre-feet, yielding an increase of 58,000 acre-feet. Therefore, net diversions by Denver increased by 54,000 acre-feet. The Colorado Water Conservation Board provided projections for 1990 through the year 2010. Homestake Expansion Homestake Phase I was projected to deplete more than 28,000 acre-feet on an average annual basis. Uses between 1979 and 1984 averaged about 26,000 acre-feet annually. The maximum diversion was 31,960 acre-feet in 1980. Phase II of the expansion is expected to be on line by 2000 and yield an additional 20,000 acre-feet annually. Values were supplied by the Colorado Water Conservation Board.