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I. n . . 7 I' number was reached using acceptable shortages critical compact interpretation by delivering at Lee Ferry. within the r1 ver system and avoids an annual average flow of 8.25 MAr 3. Water Supply Physically Available Based on projected depletions, there re~i~s 1,181,000; ,,03,)00; ~IO,OOO; and 275,000 acre-feet of available water within the 5.8 MAr limit in the Upper Basin in years 1990; 2000; 2010; and 2020; respectively. The 5.8 MAr annual Upper Basin depletion is prOjected to be reached by the year 2040. Therefore. there is likely to be unused water in other Upper Basin States. prineipally Utah and Wyoming, that could be used on an interim basis by the State of ~ew Mexico. !n connection with the Gallup-Navajo Indian Water Supply Project, the Southwest Region haa prepared an analysis of the actual water that could be diverted from the San Juan River (upstream from Bluff. Utah. to Navajo Reservoir) utilizing the. storage capacity of Navajo Reservoir for the period 1929-1974. The E&R Center and the Upper Colorado Region concur with this analyais. The demanda were based on year 2030 projections identified aa of 1980. The operation studies indicated that there is more than enough water physically available to meet the year 2030 condition for municipal, industrial, and irrigation demands. The critical period in the analysis was from July 1952 through October 1956. During the critical period. the average annual diversion and release from Navajo Reservoir was 506.000 acre-feet for municipal. industrial. and irrigation demands. !his left 524,600 acre-feet in the conservation pool at the end of the critical period (4 years-4 months). Therefore, the San Juan River, through regulation provided by Navajo Reservoir, has the capability to meet the projected Gallup-NavajO water demands. C. Conclusions Colorado River operation studies based on use of existing up-to-date hydrologic data and analyses, coupled with the estimated future Upper Basin depletions through the year 2039, indicate that with the available storage afforded by the Colorado River Storage Project, the Upper Basin could meet its obligation for water delivery at Lee Ferry and still readily accommodate a projected additional 69,000 acre-foot depletion for M&! uses in New Mexico. The 69,000 acre-feet of Navajo Reservoir water supply identified in this deter- mination and incorporated into the Bureau of Reclamation's September 1984, Projected Water Supply and Depletions Tables for the Upper Colorado River Basin (in the Appendix), is the amount of physical water supply from Navajo Reservoir that can be delivered under in~rim long-term contracts and will not impair the Upper Basin I s ability to meet its water delivery obligation to the Lower Basin. Originally, it was proposed that 85,000 acre-feet be made available for contracting from Navajo Reservoir. However, planning studies, to date. indicate that about 3,000 acre-feet could be depleted annually for M&! use on the Jicarilla Apache Indian Reservation; and as was concluded and agreed by Interior's Assistant Secretary of Land and Water Resources and Assistant Secretary of Indian Affairs (~ovember 2, 1981, and November 13, 1981), and by Solicitor opinion, dated July 30, 1980, the annual Navajo Indian Irrigation Project depletion estimate has been revised from 254,000 acre-feet to 267,000 acre-feet. Therefore, when these depletions are accounted for, the resultant present water supply available from Navajo Reservoir is 69.000 acre-feet.