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Equalization: In years when Lake Powell content is projected on January 1 to be at or above the elevation stated in the Lake Powell Equalization Elevation Table, an amount of water will be released from Lake Powell to Lake Mead at a rate greater than 8,230,000 acre-feet per year to the extent necessary to equalize storage in the two reservoirs, or otherwise to release 8,230,000 acre-feet from Lake Powell. 2. Upper Elevation Balancing: In years when Lake Powell content is projected on January 1 to be below the elevation stated in the Lake Powell Equalization Elevation Table and at or above 3575 ft., the Secretary shall release 8,230,000 acre-feet from Lake Powell if the projected elevation of Lake Mead is at or above 1075 ft. If the projected elevation of Lake Mead is below 1075 ft., the Secretary shall balance the contents of Lake Mead and Lake Powell, but shall release no more than 9,000,000 acre-feet and no less than 7,000,000 acre-feet from Lake Powell. Mid-Elevation Releases: In years when Lake Powell content is projected on January 1 to be below 3575 ft. and at or above 3525 ft., the Secretary shall release 7,480,000 acre-feet from Lake Powell if the projected elevation of Lake Mead is at or above 1025 ft. If the projected elevation of Lake Mead is below 1025 ft., the Secretary shall release 8,230,000 acre- feet from Lake Powell. 4. Lower Elevation Balancing: In years when Lake Powell content is projected on January 1 to be below 3525 ft., the Secretary shall balance the contents of Lake Mead and Lake Powell, but shall release no more than 9,500,000 acre-feet and no less than 7,000,000 acre-feet from Lake Powell. Coordinated Operation of Lakes Powell and Mead as described herein will be presumed to be consistent with the Section 602(a) storage requirement contained in the Colorado River Basin Project Act. The objective of the operation of Lakes Powell and Mead as described herein is to avoid curtailment of uses in the Upper Basin, minimize shortages in the Lower Basin and not adversely affect the yield for development available in the Upper Basin. ' The August 24-month study projections for the January 1 system storage and reservoir water surface elevations, for the following year, would be used to determine the applicability of the coordinated operation of Lakes Powell and Mead. Section 3. Determination of Lake Mead Operation during the Interim Period A. Interim Surplus Guidelines ' 1. The Basin States recommend that the Secretary continue to implement the Interim Surplus Guidelines (ISG) except as modified by this proposal, ' including the following: 3