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34 00LORADORIVER STORAGE ~ROJECT i' PROPOSED GENERiIi PRINCIPLES TO GOVERN, ANn OPERATING CRITERIA FOR, GLEN CANt9N 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 generally stylecd ":Arizona v. Oalifornia, et al., No.9 Original" is in liti~ation before the SUJlreme OOurt of the United States. Anything whICh is provided for herein is subject to change consistent with whatever rulings r\re mftde bY' the Supreme Oourt which might affect the principles and ;criteria herein set out. 2. The principl~s and criteria set forth hereinafter are applicable during the Glen Ganyon Reservoir filling period which is defined as that time intervaL between the date Glen Oanyon Reservoir. is first capable of storing ~ater (estimated to occur in January 1962) and the date Glen Oanyon 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 throu~h or released from either Lake Me!,~ or Gle* Oanyon Reservoir, as clrcumstan?es require under the prOVISIonS of paragraphs 7 and 8 hereof, to satisfy downstream . uses of water (other tlilLn for power) below Hoover Dam which uses include the followijJg: (0) Net river losses (b) Net reservoir losses (c) Regulatory wastes (d) The Mexiean Treaty obligation limited to a scheduled 1.5 million acre-fe'et per year (e) The diversion requirements of mainstream projects in .the United States; 4. All uses of water from the main stem of the Oolorado River between Glen OanIYon Dam and Lake Mead will b~ met by ~eleases from or water pass~d through Glen Oanyon ReserVOir or by tributary inflow oecurring1)elow GlenOanyon Dam. Diversions of water directly out of La:ke Mead will be met in a similar manner or, if application of the '. criteria of .paragra-Phs 7 and 8 hereof should so require, by water stored in Lake Mead. 5. The United E?tates will make an allowance for any deficiency, eomputed by the method herein set forth, in firm energy generation at Hoover powerPlant. For eaeh op~rating year deficiency in firm energy shall be computed as the difference between firm energy which, assuming a~ overall efficieney of 83 percent, would have been ~enerated and delhiered iLl, transmission voltage at Hoover powerplant III that year if Glerj Oanyo~ had not been on. t~e river and the energy actually generated i and dehvered at transmiSSIOn voltage at Hoover powerplant duringithat year adjusted to reflect an overall efficiency of 83 percent. At, the diseretion of the Secretary, allowance will be accomplished by the United States delivering energy, either at Hoover powerplant or at such other points aceeptable to both the Secretary and the affected Hoover power contractors, or monetarily in an amount equal to the ineremental cost of generating substitute energy.