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Show APPENDIX VI VI-39 34 COLORADO RIVER STORAGE PROJECT PROPOSED GENERAL PRINCIPLES TO GOVERN, AND OPERATING CRITERIA FOR, GLEN CANTON RESERVOIR AND LAKE MEAD DURING THE GLEN CANYON RESERVOIR FILLING PERIOD 1. The following principles and criteria are based on the exercise; consistent with the law of the river, of reasonable discretion by the Secretary in the operation of Federal projects involved. The case fgenerally styled "Arizona v. California, et at., No. 9 Original11 is in itigation before the Supreme Court of the United States. Anything which is provided for herein is subject to change consistent with whatever rulings are made by the Supreme Court which might affect the principles and criteria herein set out. 2. The principles and criteria set forth hereinafter are applicable during the Glen Canyon Reservoir filling period which is defined as that time interval between the date Glen Canyon Reservoir is first capable of storing water (estimated to occur in January 1962) and the date Glen Canyon Reservoir storage first attains elevation 3,700 (content 28 million acre-feet total surface storage), or May 31, 1987, whichever occurs first. 3. Sufficient water will be passed through or released from either Lake Mead or Glen Canyon Reservoir, as circumstances require under the provisions of paragraphs 7 and 8 hereof, to satisfy downstream uses of water (other than for power) below Hoover Dam which uses include the following: (a) Net river losses (6) Net reservoir losses (c) Regulatory wastes id) The Mexican Treaty obligation limited to a scheduled 1.5 million acre-feet per year (e) The diversion requirements of mainstream projects in the United States 4. All uses of water from the main stem of the Colorado River between Glen Canyon Dam and Lake Mead will be met by releases from or water passed through Glen Canyon Reservoir or by tributary inflow occurring below Glen Canyon Dam. Diversions of water directly out of Lake Mead will be met in a similar manner or, if application of the criteria of paragraphs 7 and 8 hereof should so require, by water stored in Lake Mead. 5. The United States will make an allowance for any deficiency, computed by the method herein set forth, in firm energy generation at Hoover powerplant. For each operating year deficiency in firm energy shall be computed as the difference between firm energy which, assuming an overall efficiency of 83 percent, would have been |»enerated and delivered at transmission voltage at Hoover powerplant in that year if Glen Canyon had not been on the river and the energy actually generated and delivered at transmission voltage at Hoover powerplant during that year adjusted to reflect an overall efficiency of 83 percent. At the discretion of the Secretary, allowance will be accomplished by the United States delivering energy, either at Hoover powerplant or at such other points acceptable to both the Secretary and the affected Hoover power contractors, or monetarily in an amount equal to the incremental cost of generating substitute energy. |