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<br />001131 <br /> <br />. <br /> <br />. <br /> <br />June 1. 1999 Fbrecast of Cblorado River Flow into <br />lake PaYel1l1l (Million Acre-feetl <br /> <br />USBR ani National Weather Service <br />AorihJulv Water Year 1999 <br /> <br />0Jan;Je Fran last <br />Month's Forecast <br />AorihJulv Wat Yr 1999 <br /> <br />Maxilnum (2) <br />Mean <br />MiniImlm(2) <br /> <br />9.600 <br /> <br />14.183 <br /> <br />+2.300 <br /> <br />+2.616 <br /> <br />7.600 * <br /> <br />11.783 ** <br /> <br />5.600 <br /> <br />9.383 <br /> <br />+2.600 <br />+2.800 <br /> <br />+2.916 <br />+3.116 <br /> <br />* '!his IlDIlth's A-J forecast is 98% of 30-year A-J average shown below. <br />** '!his month's Wi forecast is 101\ of 30-year Wi average shown below. <br /> <br />OEiDarison with past records <br />of Cblorado River <br />inflow into lake ~l <br />(at Lee Ferry prior to 1962) <br /> <br /> Aoril-Julv Flow Water Year Flow <br />Lo1'l3'-TiJre Average (1922-98) 8.071 11.917 <br />30-yr. Average (1961-90) 7.735 11. 724 <br />10-yr. Average (1989-98) 6.912 10.620 <br />Max. of Recori 15.404 (1984) 21. 873 (1984) <br />Min. of Record 1. 286 (1977) 3.663 (1977) <br />last Year (1998) 8.625 13.660 <br /> <br />(1) Urx:ler corrlitions of no other Upper Basin reservoirs. <br /> <br />(2) USBR ani NWS forecasts in::licate the probability of 19 chances oot of <br />20 that the actual flow will not exceed the maxiJ'ID.Im value, ani will not be <br />less than the mininunn value. <br /> <br />-5- <br />