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INTRODUCTIO!'i Authority This 2005 Annual Operating Plan (AOP) was developed in accordance with Section 602 of the Colorado River Basin Project Act (Public Law 90-537) and the Criteria for Coordinated Long- Range Operation of Colorado River Reservoirs Pursuant to the Colorado River Basin Project Act of September 30, 1968 (Operating Criteria), promulgated by the Secretary of the Interior (Secretary) . pursuant thereto. In accordance with the Colorado River Basin Project Act and the Operating Criteria, the AOP must be developed and administered consisten! with applicable Federal laws, the Utilization of Waters of the Colorado and Tijuana Rivers and of the Rio Grande, Treaty Between the United States of America and Mexico, signed February 3, 1944 (1944 United States-Mexico Water Treaty), interstate compacts, court decrees,. Colorado River Interim Surplus Guidelines (][nterim Surplus Guidelines) (66 Federal Register 7772, January 25,2001), Colorado River Water Delivery Agreement (69 Federal Register 12202, March 15, 2004), Interim 602(a) Storage Guideline (69 Federal Register 28945, May 19,2004), and other documents relating to the use ofthe waters ofthe Colorado River, which are commonly and collectively known as "The Law of the River." The Operating Criteria and Section 602 of the Colorado River Basin Project Act mandate consultation with representatives ofthe Governors of the seven Basin States and such other parties as the Secretary may deem appropriate in preparing the annual plan for operation of the Colorado River reservoirs. In addition, the Grand Canyon Protection Act of 1992 (Title XVill of Public Law 102- 575) requires consultation to include the general public and others. Accordingly, the 2005 AOP was prepared by the Bureau of Reclamation in consultation with the seven Basin States Governors' representatives; the Upper Colorado River Commission; Native American tribes; appropriate: Federal agencies; representatives ofthe academic and scientific communities, environmental organizations, and the recreation industry; water delivery contractors; contractors for the purchase of Federal power; others interested in Colorado River operations; and the general public, through the Colorado River Management Work Group (CRMWG). Purpose The purposes of theAOP are to determine: (1) the projected operation of the Colorado River reservoirs to satisfy project purposes under varying hydrologic and climatic conditions; (2) the quantity of water considered necessary to be in storage in the Upper Basin reservoirs as of September 30,2005, pursuant to Section 602(a) ofthe C%ra do River Basin Project Act; (3) water available for delivery pursuant to the 1944 United States-Mexico Water Treaty and Minute No. 242 of the International Boundary and Water Commission, United States and Mexico (lBWC); (4) whether the reasonable consumptive use requirements of mainstream users in the Lower Division States will be met under a "Normal," "Surplus," or "Shortage" condition as outlined in Article ill ofthe Operating Criteria and as implemented by the Interim Surplus Guidelines; and (5) whether water apportioned 1