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<br /> <br />The Upper Basin States have previously stated disagreement with some 0 <br />assumptions in the 1984 hydrologic investigation. Therefore, it shoul <br />stated that results from this 1988 hydrologic investigation are for Bur <br />planning purposes only.. <br /> <br /> <br />o <br />("') <br />W <br />H:lo <br /><:r.l II. Introduction <br />W <br /> <br />The Act of June 13, 1962 (76 stat. 96, Public Law 87-483), authorizing <br />Navajo Indian Irrigation Project and the San Juan-Chama'Project, provide <br />in Section 11 that the Secretary of Interior shall not enter into long-t <br />contracts for the delivery of water from Navajo Reservoir until he has m <br />certain hydrologic determinations as to water availability, has submitte <br />such deter~inations to the Congress, and the Congress has approved such <br />contracts. The act also authorized the Secretary to market water from <br />Navajo Rese~voi= :or oth~r municipal and :nd~s~=:al u~as in New Mexico i <br />he determines on the basis of hydrologic investigation that such wateri <br />reasonably likely to be available. <br /> <br />By November 1967, the first determination which made 100,000 acre-feet of <br />water available for marketing was submitted to the Congress, and on March <br />22, 1968, Senate Joint Resolution 123 (Public Law 90-272) was adopted, <br />approving three long-term contracts with a total estimated annual depletic <br />of 51,550 acre-feet. However, by the early 1980's it became impractical I <br />sell water to meet long-term demands from the Navajo Reservoir supply unde <br />the Secretary of the Interior's 1963 determination. under that <br />determination, any contracts must terminate in the year 2005, which did nc <br />allow enough time for potential contractors to develop a project and <br />recover investments. <br /> <br />In December 1984, the Secretary of Interior signed an updated hydrologic <br />determination for the Upper Colorado River Basin by the Bureau of Reclama- <br />tion (Reclamation). A principal conclusion of the 1984 determination was <br />the estimation that there was enough runoff in the Upper Basin to support <br />depletion level of at least 5.8 million acre-feet (MAF). This <br />deterll1ination also certified the availability of 69,000 acre-feet per year <br />of water for marketing from Navajo Reservoir through the year 2039. <br />Although there was some indication, dependent upon assumptions and study' <br />conditions, that utilization of the Colorado River Simulation System (CRSS. <br />might have resulted in somewhat greater yield estimations for the Upper <br /> <br />. <br /> <br />2 <br />