285
FGUS75 KBOU 131946 RRA
ESFBOU
COC001-005-013-014-019-031-035-039-047-049-057-059-069-073-075-087-
093-095-115-117-121-123-272300-
WATER SUPPLY OUTLOOK
NATIONAL WEATHER SERVICE DENVER CO
146 PM MDT MON MAY 13 2013
NATIONAL WEATHER SERVICE STREAMFLOW FORECASTS FOR NORTH CENTRAL AND
NORTHEAST COLORADO AS OF MAY 2013.
WITH THE WET WEATHER PATTERN THIS SPRING...MOUNTAIN SNOWPACK IN
NORTHERN COLORADO ROSE DRAMATICALLY AND BY LATE APRIL THE BASINS IN
NORTH CENTRAL COLORADO HAD REACHED 95 TO NEAR 100 PERCENT OF THEIR
ANNUAL AVERAGE PEAK SNOWPACK. THE EARLY MAY SNOWPACK HELD FAIRLY
STEADY AS STORMS CONTINUED TO MOVE OVER THE AREA. ON MAY 13TH THE
SNOWPACK WAS 121 PERCENT OF AVERAGE IN THE SOUTH PLATTE BASIN...113
PERCENT OF AVERAGE IN THE UPPER COLORADO RIVER BASIN AND 91 PERCENT
OF AVERAGE IN THE NORTH PLATTE BASIN.
TEMPERATURES HAVE BEEN RUNNING 4 TO 10 DEGREES BELOW AVERAGE THE
PAST MONTH. THESE COLD TEMPERATURES CONTRIBUTED TO LESS SNOWPACK
RUNOFF AND LOWER STREAMFLOWS ALONG WITH LITTLE CHANGE IN RESERVOIR
STORAGE. COMBINED RESERVOIR STORAGE WAS ONLY 67 PERCENT OF AVERAGE
IN THE UPPER COLORADO RIVER BASIN AND 87 PERCENT OF AVERAGE IN THE
SOUTH PLATTE BASIN AT THE END OF APRIL.
STREAM VOLUME FORECASTS ACROSS NORTH CENTRAL COLORADO INCREASED
SIGNIFICANTLY WITH THE IMPROVED SNOWPACK. FOLLOWING ARE MAY THROUGH
JULY FORECASTS AT SELECTED LOCATIONS:
MOST PROBABLY FORECAST
RUNOFF VOLUME PERCENT
STREAM AND STATION PERIOD 1000 AF OF AVG
__________________ ______ _______ _______
SOUTH PLATTE RIVER
ANTERO RESERVOIR INFLOW MAY-JUL 9 69
SPINNEY MTN RES INFLOW MAY-JUL 40 91
11-MILE CANYON RES INFLOW MAY-JUL 40 89
CHEESMAN LAKE INFLOW MAY-JUL 76 88
SOUTH PLATTE MAY-JUL 132 85
BEAR CREEK
EVERGREEN ABV MAY-JUL 12.5 88
MORRISON MAY-JUL 15.7 87
CLEAR CREEK
GOLDEN MAY-JUL 87 87
ST VRAIN CREEK
LYONS MAY-JUL 69 86
BOULDER CREEK
ORODELL MAY-JUL 44 86
SOUTH BOULDER CREEK
ELDORADO SPRINGS MAY-JUL 32 91
BIG THOMPSON RIVER
CANYON MOUTH MAY-JUL 77 91
CACHE LA POUDRE
CANYON MOUTH MAY-JUL 192 91
NORTH PLATTE RIVER
NORTHGATE MAY-JUL 155 83
COLORADO RIVER
LAKE GRANBY MAY-JUL 170 83
KREMMLING MAY-JUL 610 78
WILLOW CREEK
WILLOW CREEK RES MAY-JUL 46 107
FRASER RIVER
WINTER PARK MAY-JUL 14 75
WILLIAMS FORK RIVER
WILLIAMS FORK RES MAY-JUL 68 76
BLUE RIVER
DILLON RES MAY-JUL 117 76
GREEN MTN RES MAY-JUL 190 75
MUDDY CREEK
WOLFORD MTN RES BLW MAY-JUL 40 87
THESE FORECASTS REFLECT NATURAL FLOW ONLY. ACTUAL OBSERVED FLOW WILL
LIKELY BE AFFECTED BY UPSTREAM WATER MANAGEMENT.
ADDITIONAL SUPPORTIVE INFORMATION (WEB ADDRESSES ARE IN LOWER CASE):
-VISIT OUR WEB SITE AT WWW.WEATHER.GOV/BOU FOR MORE LOCAL
WEATHER...CLIMATE AND STREAM INFORMATION.
-LONG RANGE PRECIPITATION AND TEMPERATURE OUTLOOKS ARE AVAILABLE AT
HTTP://WWW.CPC.NCEP.NOAA.GOV/PRODUCTS/PREDICTIONS/.
-SNOWPACK AND RESERVOIR DATA ARE AVAILABLE FROM THE NATURAL
RESOURCES CONSERVATIONS SERVICE AT HTTP://WWW.CO.NRCS.USDA.GOV/SNOW/.
-THE U.S. DROUGHT MONITOR IS AVAILABLE AT
HTTP://DROUGHT.UNL.EDU/DM/MONITOR.HTML.
TH
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