Missouri Basin River Forecast Center
Water Supply Statement
Issued in cooperation with the Natural
Resources Conservation Service
Issued:  December 14, 2011


UPPER MISSOURI BASIN
NOVEMBER PRECIPITATION WAS MOSTLY BELOW AVERAGE ACROSS THE UPPER 
MISSOURI BASIN. BASIN PRECIPITATION SUMMARIES FOR THE MISSOURI
BASIN INCLUDE: MILK ST. MARY, 73 PERCENT; MILK CANADA, 30 PERCENT;
LOWER MILK, 141 PERCENT; ABOVE TOSTON, 83 PERCENT; TOSTON TO
FT. PECK, 79 PERCENT.

OF THE FOUR MAJOR IRRIGATION RESERVOIRS IN MONTANA: LIMA RESERVOIR
HAD 162 PERCENT AVERAGE STORAGE, CLARK CANYON WAS HOLDING 119 PERCENT
OF AVERAGE WATER, GIBSON RESERVOIR HAD 43 PERCENT OF AVERAGE STORED
WATER, AND FRESNO RESERVOIR HAD 111 PERCENT OF AVERAGE STORED WATER.
THE MAJOR HYDROELECTRIC RESERVOIRS IN MONTANA (CANYON FERRY AND
FORT PECK) HAD MONTHEND STORAGE IN THE AVERAGE RANGE; 98 AND 102
PERCENT OF AVERAGE WATER, RESPECTIVELY.
YELLOWSTONE BASIN

PRECIPITATION DURING THE MONTH OF NOVEMBER WAS ABOUT 98 PERCENT OF
AVERAGE IN THE WIND RIVER BASIN ABOVE BOYSEN RESERVOIR, 98 PERCENT
OF AVERAGE IN THE UPPER YELLOWSTONE BASIN, 120 PERCENT OF AVERAGE
IN THE BIGHORN BASIN, 120 PERCENT OF AVERAGE IN THE LITTLE BIGHORN-
-UPPER TONGUE BASINS, 113 PERCENT OF AVERAGE IN THE POWDER RIVER
BASIN, AND 60 PERCENT OF AVERAGE IN THE LOWER YELLOWSTONE BASIN.

MONTHEND STORAGE WAS 104 PERCENT OF AVERAGE AT BIGHORN RESERVOIR ON
THE WYOMING/MONTANA BORDER.

 

 

PLATTE BASIN



PRECIPITATION DURING NOVEMBER IN THE PLATTE BASIN WAS NEAR AVERAGE.
PRECIPITATION IN THE NORTH PLATTE BASIN ABOVE SEMINOE
RESERVOIR WAS 116 PERCENT OF AVERAGE. IN THE NORTH PLATTE BASIN
BETWEEN SEMINOE RESERVOIR AND GUERNSY RESERVOIR PRECIPITATION WAS 121
PERCENT OF AVERAGE. THE NORTH PLATTE BASIN BELOW GUERNSY RESERVOIR
HAD 94 PERCENT OF AVERAGE PRECIPITATION. THE HIGH ELEVATIONS OF THE
SOUTH PLATTE BASIN HAD 83 PERCENT OF AVERAGE NOVEMBER PRECIPITATION
WHEREAS THE PLAINS HAD 89 PERCENT OF AVERAGE PRECIPITATION.

STORED WATER IN THE SOUTH PLATTE BASIN WAS 117 PERCENT OF AVERAGE.








 

 

          Precipitation Maps

 

 
    November 2011                 Oct-Nov WY 2012

                          

November 2011 Precipitation Percent of 1971-2000 Average       Oct-Nov WY2012 Precipitation as Percent of 1971-2000 Average

 


 
November 2011 Basin Mean Precipitation                                       Oct-Nov WY2012 Basin Mean Precipitation

                               

November 2011 MBRFC Basin Mean Precipitation                            Oct-Nov WY2012 MBRFC Basin Mean Precipitation

 

 

 

 

 

 


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