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PART VI FUTURE DEVELOPMENT e indicated the contract amount of 35,000 acre-feet was expected to be utilized by 1990 and continued through the year 2030. At present the contract for water delivery terminates December 31, 2005. Table A assumes that the Secretary of the Interior will present a hydrologic determination to Congress showing that the contract can be extended to 2039 without jeopardizing other water uses in the SanJuan and Colorado River Basins. (3) Gallup-Navajo Indian Water Supply Project e The Bureau of Reclamation, Southwest Region, is cur- rently conducting project investigations to supply water to Gallup and Navajo Indian communities in New Mexico, Arizona, and Utah. Present estimates indicate a requirement of 29,000 acre-feet of depletions for New Mexico. This requirement includes approximately 5,000 acre-feet for the Shiprock area. The Animas-La Plata Project includes a 7, 600-acre- foot delivery to the Indian communities near Shiprock with 3,800 acre- feet of annual depletion. The ultimate Gallup-Navajo depletion in New Mexico without Shiprock would be approximately 24,000 acre-feet, of which 1990 requirements would be 10,000 acre;...feet, 2000 requirements would be 14,000 acre-feet, and 2010 requirements would be 18,000 acre- feet. Sufficient water is available within the Navajo municipal and industrial contracts to cover these requirements, and water is physi- cally available within the San Juan Basin. Table A assumes that a water supply will be available until 2040. (4) Not Identified The remaining block of Navajo Reservoir water supply will be marketed by the United States and will be allocated in consulta- tion with the New Mexico Interstate Stream Commission. 4. Colorado a. Miscellaneous Additional Depletions Values shown in the 1983 column of Table A represent additional depletions that have been assumed to develop since the Com- prehens i ve Framework Study (1965 level) es t imates 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 1983 values of "Miscellaneous Additional Depletions" may be either real additions or else differences resulting from new deple- tion accounting procedures. b. Denver Expansion e 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 1977-82 was l41,000 acre-feet. The combined 1965 normalized diversion was 93,000 acre-feet, yielding an increase of 48,000 acre-feet. Projections were provided by the Colorado Water Conservation Board. 39