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0020i.(~ . . J EXECUTIVE DIRECTOR'S MONTHLY REPORT TO THE COLORADO RIVER BOARD OF CALIFORNIA August 22, 2000 PROTECTION OF EXISTING RIGHTS Colorado River Water Reoort During June 2000, storage in the major Upper Basin reservoirs increased by 711 ,000 acre-feet and storage in the Lower Basin reservoirs decreased by 579,000 acre-feet. Total System active storage as of the end ofJune Was 53.281 million acre-feet (mat) or 89 percent of capacity, which is 2.351 mafless than one year ago. July releases from Hoover, Davis, and Parker Dams averaged 16,300, 16,200 and 13,500 cubic feet per second (cfs), respectively. Planned releases from those three dams for the month of August 2000 are 15,200, 14,200 and 11,400 cfs, respectively. The August releases represent those needed to meet downstream water requirements and to conduct dredging operation above Morelos Dam. The preliminary August 15,2000 forecast of April through July 2000 unregulated inflow into Lake Powell is 4.353 maf, which is 56 percent of the 30-yearaverage forthe period 1961-1990. The forecast of unregulated inflow into Lake Powell for the 1999-00 water year is 7.246 maf, or 62 percent of the 30-year average. The Lower Division states' estimated consumptive use of Colorado River water for calendar year 2000, as estimated by Board staff, totals 8.474 maf and is projected as follows: Arizona, 2.839 maf; California,S .349 maf; and Nevada, 0.286 maf. Estimated additional unmeasured return flow credits of 0.244 mafwould reduce the total amount to 8.230 maf. For calendar year 2000, the Central Arizona Project (CAP) is projected to divert 1.384 maf, of which 292,000 acre-feet is to be credited to the Arizona Water Bank, and The Metropolitan Water District of Southern California (MWD) is projected to divert 1.306 maf. The preliminary August 1, 2000 estimate of 2000 end-of-year California agricultural consumptive use of Colorado River water under the first three priorities and sixth priority of the 1931 California Seven Party Agreement is 3.984 maf. This estimate is based on the collective use through July 2000 by the Palo Verde Irrigation District (PVID), the Yuma Project Reservation Division (YPRD), the Imperial Irrigation District (110), and the Coachella Valley Water District (CVWD). Figure I, found at the end of this report, depicts the historic projected end-of-year agricultural use for the year.