NWS Missouri River Basin/Pleasant Hill, MO

Missouri Basin River Forecast Center
Water Supply Statement
Issued in cooperation with the Natural
Resources Conservation Service
Issued:  November 15, 2011

UPPER MISSOURI BASIN

OCTOBER PRECIPITATION WAS BELOW AVERAGE ACROSS THE UPPER 
MISSOURI BASIN.  BASIN PRECIPITATION SUMMARIES FOR THE MISSOURI 
BASIN INCLUDE: MILK ST. MARY, 202 PERCENT; MILK CANADA, 383 PERCENT; 
LOWER MILK, 157 PERCENT; ABOVE TOSTON, 126 PERCENT; TOSTON TO 
FT. PECK, 207 PERCENT.

OF THE FOUR MAJOR IRRIGATION RESERVOIRS IN MONTANA:  LIMA RESERVOIR 
HAD 184 PERCENT AVERAGE STORAGE, CLARK CANYON WAS HOLDING 118 PERCENT 
OF AVERAGE WATER, GIBSON RESERVOIR HAD 52 PERCENT OF AVERAGE STORED
WATER, AND FRESNO RESERVOIR HAD 113 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 102 PERCENT OF AVERAGE WATER, RESPECTIVELY.

YELLOWSTONE BASIN

PRECIPITATION DURING THE MONTH OF OCTOBER WAS ABOUT 157 PERCENT OF
AVERAGE IN THE WIND RIVER BASIN ABOVE BOYSEN RESERVOIR, 126 PERCENT
OF AVERAGE IN THE UPPER YELLOWSTONE BASIN, 236 PERCENT OF AVERAGE
IN THE BIGHORN BASIN, 174 PERCENT OF AVERAGE IN THE LITTLE BIGHORN-
-UPPER TONGUE BASINS, 99 PERCENT OF AVERAGE IN THE POWDER RIVER
BASIN, AND 97 PERCENT OF AVERAGE IN THE LOWER YELLOWSTONE BASIN.

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

PLATTE BASIN

PRECIPITATION DURING OCTOBER IN THE PLATTE BASIN WAS BELOW AVERAGE.
PRECIPITATION IN THE NORTH PLATTE BASIN ABOVE SEMINOE
RESERVOIR WAS 118 PERCENT OF AVERAGE. IN THE NORTH PLATTE BASIN
BETWEEN SEMINOE RESERVOIR AND GUERNSY RESERVOIR PRECIPITATION WAS 137
PERCENT OF AVERAGE. THE NORTH PLATTE BASIN BELOW GUERNSY RESERVOIR
HAD 193 PERCENT OF AVERAGE PRECIPITATION. THE HIGH ELEVATIONS OF THE
SOUTH PLATTE BASIN HAD 150 PERCENT OF AVERAGE OCTOBER PRECIPITATION
WHEREAS THE PLAINS HAD 181 PERCENT OF AVERAGE PRECIPITATION.

STORED WATER IN THE SOUTH PLATTE BASIN WAS 118 PERCENT OF AVERAGE.

 

PRECIPITATION MAPS

October 2011	WY 2012
October 2011 Precipitation Percent of 1971-2000 Average	WY2012 Precipitation as Percent of 1971-2000 Average
October 2011 Basin Mean Precipitation	WY2012 Basin Mean Precipitation
October 2011 MBRFC Basin Mean Precipitation	WY2012 MBRFC Basin Mean Precipitation