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<br />OOLORADO RIVER STORAGE PROJECT <br /> <br />35 <br /> <br />. <br /> <br />6. In accomplishing the foregoing, Glen Oanyon Reservoir will <br />be operated in general accordance with the provisions of Seetions 7 <br />and 8. <br />7. Storage capacity in Glen Oanyon Reservoir to elevation 3,490 <br />(6.5 million acre-feet' surface storage) shall be obtained at the earliest <br />practicable time in aeeordanee with the following proeedure. <br />Until elevation 3,490 is first reached, any water stored in <br />Glen Oanyon Reservoir shall be available to maintain rated <br />head on Hoover powerplant. When stored water in Glen <br />Oanyon Reservoir has reached elevation 3,490, it will not be <br />subject to release or diminution below elevation 3,490. The <br />obtaining of this storage level in Glen Oanyon Reservoir will <br />be in sueh manner as to not cause Lake Mead to be drawn <br />down below elevation 1,123 (14.5 million acre-feet available <br />surface storage), which corresponds to rated head on the Hoover <br />powerplant. In the proeess of gaining storage to elevation <br />3,490, the release from Glen Oanyon shall not be less than 1.0 <br />million ael'e-feet per year and 1,000 cubic feet per seeond, as <br />long as inflow and storage will permit. <br />8. The operation of Glen Canyon Reservoir above elevation 3,490 <br />and Lake Mead will be eoordinated and integrated so as to produce <br />the greatest practielll amount of power and energy. In view of the <br />provision for allowanee set forth in seetion 5 hereof, the quantity of <br />water released through each powerplant will be determined by the <br />Secretary in a manner appropriate to meet the filling eriteria. Oper- <br />ation will be g~nerally as follows. <br />The combined generation at Glen Oanyon and Hoover will be <br />at a preestablished annual rate, genel'ally uniform from year to <br />year following: an energy build-up period. The obtaining of <br />water in Glen 'Oanyon Reservoir between elevation 3,490 and <br />elevation 3,700 will be accomplished by storing the annual amount <br />by whieh inflow exceeds release for energy generation at Glen <br />Oanyon. To produee the greatest praetieal amount of power <br />and energy it may be necf\Ssary to draw Lake Mead to elevation <br />1,050. It woud not be practical, however, to draw Lake Mead <br />below elevation 1,050. <br />9. Because of ths coordinated operation, except for ener~y that <br />would be gen~rated by water which o.therwise would be spIlled at <br />Hoover Dam, no secondary energy will b~ generated at Hoover. <br />10. Whenever Glen Oanyon stora~e has reached elevation 3,700 or <br />May 31, 1987, has occurred, these prmciples and eriterfa will no longer <br />be applIcable, or if in the judgment of the Secretary the contents of <br />both reservoirs are :such as to warrant such aetion, he may declare <br />these principles and criteria no longer applicable. <br />11. In the annual application of the flood control regulations to the <br />operation of Lake Mead, recognition shall be given to available capac- <br />ity in upstTearu reservoirs. <br /> <br />. <br /> <br />