Issued by NWS Denver/Boulder, CO
000
FGUS75 KBOU 102023
ESFBOU
COC001-005-013-014-019-031-035-039-047-049-057-
059-069-073-075-087-093-095-115-117-121-123-250000-
HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE DENVER CO
122 PM MDT FRI APR 10 2009
...WATER SUPPLY OUTLOOK...NATIONAL WEATHER SERVICE/NATURAL RESOURCES
CONSERVATION SERVICE STREAMFLOW FORECASTS FOR NORTH CENTRAL AND
NORTHEAST COLORADO AS OF APRIL 2009.
WEST OF THE DIVIDE...LATE MARCH AND EARLY APRIL WINTER STORMS HELPED
THE SNOWPACK INCREASE IN THE UPPER COLORADO BASIN FROM 100 PERCENT
OF AVERAGE ON MARCH 23RD TO 110 PERCENT BY APRIL 10TH. THE BLUE
RIVER BASIN MEASURED THE HIGHEST SNOWPACK PERCENTAGE (114 PERCENT OF
AVERAGE) ON APRIL 1ST. THE SNOWPACK PERCENTAGES FOR THE REMAINDER OF
THE WATERSHEDS IN SUMMIT AND GRAND COUNTIES RANGED FROM 100 TO 105
PERCENT OF AVERAGE.
EAST OF THE DIVIDE...INCREASING SNOWFALL IN LATE MARCH AND EARLY
APRIL ALSO HELPED THE SOUTH PLATTE BASIN SNOWPACK BUILD FROM 82
PERCENT OF AVERAGE ON MARCH 23RD TO 91 PERCENT BY APRIL 10TH. ON
APRIL 1ST...THE CLEAR CREEK DRAINAGE WAS THE ONLY WATERSHED IN THE
SOUTH PLATTE BASIN WITH ABOVE AVERAGE SNOWPACK (105 PERCENT). THE
OTHER WATERSHEDS RANGED FROM 71 AND 75 PERCENT OF AVERAGE
RESPECTIVELY...IN THE SAINT VRAIN AND UPPER SOUTH PLATTE DRAINAGES
TO 95 PERCENT OF AVERAGE IN THE CACHE LA POUDRE DRAINAGE. THE NORTH
PLATTE BASIN SNOWPACK REMAINS NEAR AVERAGE.
RESERVOIR STORAGE...COMBINED STORAGE WAS 98 PERCENT OF AVERAGE IN
THE UPPER COLORADO BASIN AT THE END OF MARCH. THIS IS DOWN SLIGHTLY
FROM A YEAR AGO. COMBINED STORAGE WAS 99 PERCENT OF AVERAGE IN THE
SOUTH PLATTE BASIN...WHICH IS HIGHER THAN A YEAR AGO.
STREAMFLOW FORECASTS...MOST FORECAST POINTS IN THE UPPER COLORADO
BASIN AND NORTH PLATTE BASIN CAN EXPECT NEAR AVERAGE RUNOFF. BELOW
AVERAGE RUNOFF IS FORECAST ACROSS THE SOUTH PLATTE BASIN.
FOLLOWING ARE STREAMFLOW FORECASTS FOR SELECTED LOCATIONS:
MOST PROBABLY FORECAST
VOLUME PERCENT
STREAM AND STATION PERIOD 1000 AF OF AVG
__________________ ______ _______ _______
SOUTH PLATTE RIVER
ANTERO RESERVOIR INFLOW APR-SEP 14.4 65
SPINNEY MTN RES INFLOW APR-SEP 56 81
11-MILE CANYON RES INFLOW APR-SEP 58 81
CHEESMAN LAKE INFLOW APR-SEP 106 76
SOUTH PLATTE APR-SEP 192 75
BEAR CREEK
EVERGREEN ABV APR-SEP 13.9 56
MORRISON APR-SEP 14 45
CLEAR CREEK
GOLDEN APR-SEP 115 86
ST VRAIN CREEK
LYONS APR-SEP 86 79
BOULDER CREEK
ORODELL APR-SEP 48 80
SOUTH BOULDER CREEK
ELDORADO SPRINGS APR-SEP 37 80
BIG THOMPSON RIVER
CANYON MOUTH APR-SEP 94 79
CACHE LA POUDRE
CANYON MOUTH APR-SEP 220 80
NORTH PLATTE RIVER
NORTHGATE APR-SEP 250 93
COLORADO RIVER
LAKE GRANBY APR-JUL 225 100
WILLOW CREEK
WILLOW CREEK RES APR-JUL 50 98
FRASER RIVER
WINTER PARK APR-JUL 21 105
WILLIAMS FORK RIVER
WILLIAMS FORK RES APR-JUL 100 105
BLUE RIVER
DILLON RES APR-JUL 175 105
GREEN MTN RES APR-JUL 305 109
MUDDY CREEK
WOLFORD MTN RES BLW APR-JUL 62 103
COLORADO RIVER
KREMMLING APR-JUL 920 106
$$
TH
