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<br />:COLORADO BASIN RIVER PORECAST CENTER <br />:SALT LAKE CITY, UTAH <br /> <br />OOl~n <br /> <br />. <br /> <br />.:MARCH I PRELIMINARY PORECAST <br /> <br />.B SLC 930801 M DH24/DC9303011500/DVM05/QCVPEZT/QCVPEZ5/QCVPEZP <br /> <br />:PLOOD CONTROL RESERVOIR INPLOW PORECASTS <br />:1 MARCH THROUGH 31 JULY 1993 (units: 1000 ACRE-PEET) <br /> <br />vi~-"e- <br />PYI- <br /> <br />MARCH I, 1993 <br /> <br />/; <br />, <br /> <br />~ - <br /> <br />:RESERVOlR <br />: ID NAME MEAN MAXIMUM MINIMUM <br />HODA3 : LAKI! MIWl :/ 10600 / 14200 / 7640 <br />GLDA3 :LAKE POWELL :/ 10125 / 13415 / 7335 <br />NVRN5 :NAVAJO RES :/ 1290 / 1645 / 1040 <br />VCRC2 :VALLECITO RES :/ 297 / 365 / 226 <br />BMDC2 :BLUE MESA RES :/ 935 / 1255 / 700 <br />GRNU1 :PLAMING GORGE RES:/ 1050 / 1660 / 490 <br />,END <br /> <br />,B SLC M DH24 /DC9303011500/ <br />.Bl DY930331 /QCMPEZS/DRE+l/QCMFEZ5/DRE+2/QCMFEZ5 <br /> <br />MONTHLY DISTRIBUTION OF PLOW (1000 ACRE-FEET) <br /> <br />GLDA3 <br />BMDC2 <br />PNTW4 <br />GRNU 1 <br />NVRN 5 <br />VCRC2 <br /> <br />OBS <br />OCT NOV DEC JAN FEB <br />/275/433/380/50B/397:/ <br />/ 28/ 25/ 23/ 25/ 25:/ <br />/ 28/ 32/ 28/ 28/ 20:/ <br />/ 28/ 32/ 28/ 29/ 25:/ <br />/ 14/ 18/ 18/ 25/ 38:/ <br />/ 5/4,9/4.5/4.0/5.0:/ <br /> <br />FORECASTS <br />MAR APR MAY <br />625 /1050 /2800 <br />35 / 85 / 265 <br />32 / 70 / 145 <br />70 / 130 / 240 <br />90 / 250 / 440 <br />7 / 25 / 100 <br /> <br />:LAKE POWELL <br />:BLUE MESA <br />:PONTENELLE <br />:PLAMJNG GORGE <br />: NAVAJO <br />:VALLECITO <br /> <br />. END <br /> <br />.. <br /> <br />OUTLOOK <br />APR-JUL <br />9500 117% <br />900 129% <br />655 75% <br />980 771. <br />1200 157% <br />290 150% <br /> <br />1_, <br /> <br />l' <br /> <br />Precipitation during February was above average in all sections of <br />the upper Colorado. In the Green, precipitation was 160% of-average, <br />In the San Juan, precipitation was 240% of average. In the Colorado <br />mainstem, February precipitation was 220% of average. <br /> <br />" <br /> <br />Snowpack accumulation followed the February precipitation pattern as <br />temperatures have been low enough to snow at all elevations in the <br />upper Colorado basin, In general, the snowpack increased 20 to 25% <br />with respect to average during February. Only the upper Green remains <br />below average at 90%, As of March 1. the snowpack in the Green, <br />upper Colorado mainstem, and San Juan basins was 1151., 135%, and 155% <br />of average respectively. <br /> <br />Observed streamflows for Pebruary were below average in the <br />above average in the Colorado mainstem and San Juan basins, <br />inflow waS 100% of average during February. <br /> <br />Green and <br />Lake Powell <br /> <br />I <br />" <br /> <br />As a result of the conditions experienced during Pebruary, the forecasts <br />shown above have increased dramatically from those issued on Pp.bruary IS. <br /> <br />This product will be updated with eoordinated values on March 5, 1993. <br /> <br />R. Hartman <br />CBRFC (801-524-5130) <br /> <br />, <br />;: <br />:1 <br />