Missouri Basin River Forecast Center
Water Supply Statement
Issued in cooperation with the Natural
Resources Conservation Service
Issued:  December 12, 2009


UPPER MISSOURI BASIN

 

NOVEMBER PRECIPITATION WAS BELOW AVERAGE ACROSS THE UPPER MISSOURI
BASIN. BASIN PRECIPITATION SUMMARIES FOR THE MISSOURI BASIN INCLUDE:
MILK ST. MARY, 45 PERCENT; MILK CANADA, 26 PERCENT; LOWER MILK, 3
PERCENT; ABOVE TOSTON, 90 PERCENT; TOSTON TO FT. PECK, 26 PERCENT.

OF THE FOUR MAJOR IRRIGATION RESERVOIRS IN MONTANA: LIMA RESERVOIR
HAD 120 PERCENT AVERAGE STORAGE, CLARK CANYON WAS HOLDING 114 PERCENT
OF AVERAGE WATER, GIBSON RESERVOIR HAD 27 PERCENT OF AVERAGE STORED
WATER, AND FRESNO RESERVOIR HAD 77 PERCENT OF AVERAGE STORED WATER.
THE MAJOR HYDROELECTRIC RESERVOIRS IN MONTANA (CANYON FERRY AND
FORT PECK) HAD MONTHEND STORAGE IN THE AVERAGE TO BELOW AVERAGE
RANGE; 100 AND 77 PERCENT OF AVERAGE WATER, RESPECTIVELY.

AS INDICATED BY THE U.S. GEOLOGICAL LONG TERM GAGING STATIONS,
THE MARIAS RIVER NEAR SHELBY, MONTANA HAD AN ESTIMATED 79 PERCENT
OF AVERAGE RUNOFF IN NOVEMBER.


 

YELLOWSTONE BASIN

PRECIPITATION DURING THE MONTH OF NOVEMBER WAS ABOUT 8 PERCENT OF
AVERAGE IN THE WIND RIVER BASIN ABOVE BOYSEN RESERVOIR, 64 PERCENT
OF AVERAGE IN THE UPPER YELLOWSTONE BASIN, 15 PERCENT OF AVERAGE
IN THE BIGHORN BASIN, 24 PERCENT OF AVERAGE IN THE LITTLE BIGHORN-
-UPPER TONGUE BASINS, 12 PERCENT OF AVERAGE IN THE POWDER RIVER
BASIN, AND 10 PERCENT OF AVERAGE IN THE LOWER YELLOWSTONE BASIN.

MONTHEND STORAGE WAS 106 PERCENT OF AVERAGE AT BIGHORN RESERVOIR ON
THE WYOMING/MONTANA BORDER.

RUNOFF DURING NOVEMBER 2009 IN THE YELLOWSTONE RIVER WAS 94 PERCENT OF
AVERAGE AT CORWIN SPRINGS AND 98 PERCENT OF AVERAGE AT BILLINGS, MONTANA.
(HTTP:/MT.WATER.USGS.GOV/PUB/NWC.RELEASE.HTML)




PLATTE BASIN

PRECIPITATION DURING NOVEMBER IN THE PLATTE BASIN WAS BELOW AVERAGE.
NOVEMBER PRECIPITATION IN THE NORTH PLATTE BASIN ABOVE SEMINOE RESERVOIR
WAS 54 PERCENT OF AVERAGE. IN THE NORTH PLATTE BASIN BETWEEN SEMINOE
RESERVOIR AND GUERNSY RESERVOIR PRECIPITATION WAS 37 PERCENT OF AVERAGE.
THE NORTH PLATTE BASIN BELOW GUERNSY RESERVOIR HAD 51 PERCENT OF AVERAGE
PRECIPITATION. THE HIGH ELEVATIONS OF THE SOUTH PLATTE BASIN HAD 68
PERCENT OF AVERAGE NOVEMBER PRECIPITATION WHEREAS THE PLAINS HAD 78
PERCENT OF AVERAGE PRECIPITATION.

 

 

PRECIPITATION MAPS
November 2009  Oct-Nov WY2010
November 2009 Precipitation Percent of 1971-2000 Average WY2010 Precipitation as Percent of 1971-2000 Average
   
November 2009 Basin Mean Precipitation WY2010 Basin Mean Precipitation
   
November 2009 MBRFC Basin Mean Precipitation WY2010 MBRFC Basin Mean Precipitation


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