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602',54 . . EXECUTIVE DIRECTOR'S MONTHLY REPORT TO THE COLORADO RIVER BOARD OF eALIFORNIA ....,~~.......-n ,,~~t.=.';Jt::.t '\1 ~f.J OCT 1 9 1998 October 13, 1998 Colo~ad:l Wa::cr Conservation Board ADMINlSTRA nON Revised 1998 Board Meetin~ Schedule .- lncluded in the Board folder is a revised meeting schedule, dated October 5, 1998, for the remainder of the 1998 calendar year. The schedule was updated to reflect the changes in the date and location of the November Board meeting and the cancellation of the September Board meeting. PROTECTION OF EXISTING RIGHTS CO,""''',, River WIJUJr Reoort During August 1998, storage in the major Upper Basin reservoirs decreased by 763,000 acre-feet lIIId storage in the Lower Basin reservoirs increased by 311,000 acre-feet. Total System active storage at the end of August was 56.389 million acre-feet (mat) or 95 pcrcent of capacity, which is 1.370 mafmore than one year ago. September releases from Hoover, Davis, and Parker Dams averaged 16,170, 15,360 and 13,730 cubic feet per second (cfs), respectively. Planned releases from those three dams for the month of October are 11,000, 12,500 and 11,000 cfs, respectively. The October releases represent those needed to meet downstream water requirements plus those for flood control space building. The actual April through July 1998 unregulated inflow into Lake Powell was 8.625 mar, which is 112 pen::ent of the 30-year average for the period 1961-1990. The unregulated inflow into Lake Powell for the 1997-98 water year was 13.660 mar. or 117 percent of the 30-year average. The Lower Division states' estimAted conswnptive use of Colorado River water for calendar year 1998, as estimated by Board staffon October]'1', totals 7.996 mafand is projected as follows: Arizona, 2.753 mar; California, 4.997 maf; and, Nevada, 0.246 mar. EstimAted additional unmeasured return flow credits of 0.247 mar would reduce the total amount to 7.749 mat: For calendar year 1998, the Central Arizona Project (CAP) is projected to divert 1.389 mar and The MetrOpolitan Water District of South em California (MWD) is projected to divert 1.092 mar. The preliminary October I" forecast of 1998 end-of-year California agricultural conswnptive use of Colorado River water under the first three priorities of the 1931 California Seven Party Agreement is 3.846 maf. This estimate is based on the collective use through September 1998 by the Palo Verde Irrigation District (PVID), the Yuma Project Reservation Division (VPRD), the Imperial Irrigation District (lID), and the Coachella Valley Water District (CVWD). Figure I, found at the end of this report, depicts the forecast of end-of-year agricultural use for the year.