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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />.,.' <br /> <br />002976 <br /> <br />BIOLOGICAL OPINION <br /> <br />Proposed Action <br /> <br />that it can be passed through Glen Canyon Power plant when operated at the available capability <br />of the powerplant. Any water thus retained in Lake Powell to avoid bypass of water at the Glen <br />Canyon Powerplant will be released through Glen Canyon Powerplant as soon as practicable to <br />equalize the active storage in Lake Powell and Lake Mead. " <br /> <br />Reservoir equalization scheduling is assisted by computer modeling simulation with the following <br />steps. First, the model computes the quantity of 602(a) storage required by the criteria. Next, the <br />model predicts the End Of Water Year (EOWY) contents of Lake Powell, Lake Mead, and the sum <br />of Upper Basin reservoirs. Next, the model makes two checks to see if the reservoirs should be <br />equalized: 1) if the sum of Upper Basin reservoir contents is greater than the 602(a) storage <br />quantity, and 2) if the predicted EOWY contents of Lake Powell are greater than the predicted <br />EOWY contents of Lake Mead; then the contents of Lake Powell and Lake Mead are equalized by <br />releasing water through Glen Canyon Dam. <br /> <br />b. Interstate and international waters <br /> <br />Fig. 2, above, and Fig. 5 illustrate the LCR water that is released and diverted yearly. Based on <br />the Law of the River, entitlements to the beneficial use of Colorado River water in the lower basi n <br />have been established in the following four ways. <br /> <br />· Court decrees for 4,156,847 acre-feet which includes the water rights perfected by the <br />States (which existed prior to the effective date of the Boulder Canyon Project), Indian <br />reservations water entitlements, and other Federal entitlements listed in the Court decrees. <br /> <br />· Secretarial reservations for Federal uses, such as the Bureau of Land Management, Fish <br />and Wildlife Service, and Reclamation. <br /> <br />· Contractual entitlements under section 5 of the Boulder Canyon Project Act. <br /> <br />. <br /> <br />The International Treaty with Mexico for 1.5 maf. <br /> <br />k~ld?e. 7! $ ) <br /> <br />The 1964 United States Supreme Court Decree in Arizona vs. California, in Article II, states "The <br />United States, its officers, attorneys, agents and employees are hereby severally enjoined from <br />releasing water controlled by the United States for irrigation and domestic use in the States of <br />Arizona, California and Nevada, except as follows: <br /> <br />14 <br />