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Show APPENDIX VI VI-65 go colorado river storage project General Principles To Govern Filling of Colorado River Storage Project Reservoirs, and Operating Criteria for, Glen Canyon Reservoir (Lake Powell) and Lake Mead During the [Lake Powell] Filling Period (Additions in italic; deletions in black brackets) 1. The following principles and criteria are based on the exercise, consistent with the Law of the River, of reasonable discretion by the Secretary of the Interior in the operation of the Federal projects involved. The case generally styled "Arizona v. California, et al.. No. 9 Original" is in litigation 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. They may also be subject to change due to future Acts of the Congress. 2. The principles [and criteria] set forth hereinafter are applicable during the time interval between the date any of the Colorado River Storage Project Reservoirs (Lake Powell and Flaming Gorge, Navajo and Curecanti Reservoirs) [Lake Powell filling period, which is defined as that time interval between the date Lake Powell] is first capable of storing water [(estimated to occur in the fall of 19G2 or the spring of 19G3)] and the date Lake Powell storage first attains elevation 3,700 (content 28.0 MAF total surface storage) and Lake Mead storage is simultaneously at or above elevation 11^6 (content 17.0 MAF available vvrfacc storage), or May 31, 1987, whichever occurs first If, in the judgment of the Secretary, the contents of Lake Powell and Lake Mead warrant or will warrant such action, and after consultation with appropriate interests of the Upper Colorado River Basin and the Lower Colorado River Basin, the Secretary may declare that in not less than 2 years jrom and after the date of such declaration these principles and criteria are no longer applicable. 3. Sufficient water will be passed through or released from either or both Lake Mead and [or] Lake Powell, as circumstances require under the provisions of principles 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. b. Net reservoir losses. c. Regulatory wastes. d. 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 or losses of water from the main stem of the Colorado River between Glen Canyon Dam and Hoover Dam [Lake Mead] will be met by releases from or water passed through Lake Powell and/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 Principles 7 and 8 hereof should so require, by water stored in Lake Mead. 5. The United States will make a fair allowance for any deficiency, computed by the method herein set forth, in firm energy generation at Hoover Power Plant. For each operating jTear deficiency in firm energy shall be computed as the difference between firm energy which, |
