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<br />During water year 2003, the minimum release objective of 8.23 maf (10,152 mcm) will be made <br />under the most probable and minimum probable inflow conditions. Above average inflow to Lake <br />Powell in 2003 may require that releases greater then 8.23 maf be made to equalize the storage <br />between Lakes Powell and Mead. Under the probable maximum inflow scenario, approximately <br />11.0 maf (13,600 mcm) will be released. <br />I <br /> <br />Because of less than full storage conditions in Lake Powell, resulting from three consecutive years <br />of below normal runoff, releases for dam safety purposes are highly unlikely in 2003. If <br />implemented, releases greater than powerplant capacity would be made consistent with the 1956 <br />Colorado River Storage Project Act, the 1968 Colorado River Basin Project Act, and the 1992 Grand <br />Canyon Protection Act. Reservoir releases in excess of powerplant capacity required for dam safety <br />purposes during high reservoir conditions may be used to accomplish the objectives of the <br />Beach/Habitat Building Flow according to the terms contained in the Glen Canyon Dam ROD, and <br />as published in the Glen Canyon Dam Operating Criteria (62 Federal Register 9447, Mar. 3, 1997). <br /> <br />Daily and hourly releases in 2003 will be made according to the parameters of the ROD for the Glen <br />Canyon Dam Final Environmental Impact Statement (GCDFEIS) preferred alternative, and the Glen <br />Canyon Dam Operating Criteria, as shown in Table 3. Exceptions to these parameters may be made <br />during power system emergencies, or for purposes of humanitarian search and rescue. Experimental <br />flows, if implemented in 2003, may also require that releases exceed the parameters of the Glen <br />Canyon Dam Operating Criteria during the winter months of 2003. <br /> <br />Releases from Lake Powell in water year 2003 will continue to reflect consideration of the uses and <br />purposes identified in the authorizing legislation for Glen Canyon Dam. Powerplant releases and <br />Beach/Habitat Building Flows will reflect criteria based on the findings, conclusions, and <br />recommendations made in the ROD for the GCDFEIS pursuant to the Grand Canyon Protection Act <br />of 1992, and any additional NEP A documentation regarding the April 24, 2002 AMWG <br />experimental flow proposal. <br /> <br />The Secretary is considering information submitted to the Department of the Interior by the <br />Colorado River Basin States (65 Federal Register 48537, August 8, 2000) whereby 602(a) storage <br />requirements determined in accordance with Article II (1) of the Operating Criteria would utilize a <br />value of not less than 14.85 maf(elevation 3630 feet) for Lake Powell through the year 2016. The <br />Secretary, through Reclamation, may initiate a NEPA process in 2003 to determine the impacts of <br />the Basin States proposed 602(a) storage. <br /> <br />December 13, 2002 <br /> <br />15 <br />