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<br />Lower Basin that can be met from either pumping or release from <br />Lake Mead. This Secretarial determination is generally defined as <br />one of the following: <br /> <br />o Normal: Sufficient mainstream water . is <br />available for release from Lake Mead to <br />satisfy 7.5 maf of annual reasonable bene- <br />ficial consumptive use. <br />o Surplus: Sufficient mainstream water is <br />available to satisfy greater than 7.5 maf of <br />annual reasonable beneficial consumptive use. <br />o Shortage: Insufficient mainstream water is <br />available for release from Lake Mead to <br />satisfy 7.5 maf of annual reasonable <br />beneficial consumptive use. <br /> <br />It is understood that a surplus condition will exist when <br />water in the Colorado River system is in excess of that amount <br />required to assure that basic consumptive uses in the Upper and <br />Lower Basins are not impaired by such a determination, i.e. storage <br />in the Upper Basin reservoirs is above that amount required by <br />Section 602(a) of Public Law 90-537 and storage in the Lower Basin <br />reservoirs is at or above that amount required to provide 7.5 maf <br />of annual reasonable beneficial consumptive use from the mainstream <br />of the Colorado River to the Lower Division states plus any burden <br />of the Lower Division states in meeting the United States' water <br />delivery obligation to Mexico. <br /> <br />H. California's Uses in Excess of its Basic Apportionment <br /> <br />California has been using water in accordance with the <br />Operating criteria in excess of its basic annual apportionment of <br />4.4 maf quantified in the Decree in Arizona v. California. <br />California recognizes that as the other Basin states develop their <br />apportioned waters and as required by the hydrology of the river <br />system and provisions of the "Law of the River", it must reduce its <br />use of water from the Colorado River on an annual basis. In this <br />regard, agencies within California have been, and are, aggressively <br />pursuing measures to meet their collective Colorado River water <br />needs within California's basic apportionment and its rights to use <br />available surplus water. Measures that have been implemented <br />include both water supply augmentation and demand management and <br />generally include: <br /> <br />o Implementing water conservation and pricing <br />programs within each of the Districts (e.g. <br />urban and rural water audits and retrofit <br />programs, California Irrigation Management <br />Information System for irrigated areas, <br />distribution of water conservation devices, <br />and installation of non leak gates on canals <br />and laterals). <br /> <br />8 <br />