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- . " '':'- ~~ .;;~., ,t;t\ i,t;.t' )0 ., :\t Q (b) To maintain, as nearly as practicable, active storage in Lake Mead equal to the active storage in Lake Powell, and (c) To avoid anticipated spills from Lake Powell. (4) In the application of Article II (3) (b) herein, the annual release will be made to the extent that it can be passed through Glen Canyon Powerplant when operated at the available capability of the powerplant. Any water thus retained in Lake Powell to avoid bypass of water at the Glen Canyon Powerplant will be released through the Glen Canyon Powerplant as soon as practicable to equalize the active storage in Lake Powell and Lake Mead. (5) Releases from Lake Powell pursuant to these criteria shall not prejudice the position of either the upper or lower basin interests with re- spect to required deliveries at Lee Ferry pursuant to the Colorado River Compact. III. OPERATION OF LAKE MEAD (1) Water released from Lake Powell, plus the tributary inflows between Lake Powell and Lake Mead, shall be regulated in Lake Mead and either pumped from Lake Mead or released to the Colorado River to meet require- ments, as follows: .", , (a) Mexican Treaty obligations; (b) Reasonable consumptive use requirements of mainstream users in the lower basin; (c) Net river losses; (d) Net reservoir losses; (e) Regulatory wastes. (2) Until such time as mainstream water is delivered by means of the Central Arizona Project, the consumptive use requirements of Article> III(1) (b) of these Operating Criteria will he met. (3) After commencement of delivery of mainstream water by means of the Central Arizona Project, the consumptive use requirements of Article III(l) (b) of these Operating Criteria will be met to the following extent: (a) Normal. The annual pumping and release from Lake Mead will be sufficient to satisfy 7,500,000 acre:"feet of annual consumptive use in 'accordance with the decree in Arizona v. California. 376 U.S. 340 (1964).