Water Supply Conditions in the Missouri River Basin for October 2014

Missouri Basin River Forecast Center
Water Supply Statement
Issued in cooperation with the Natural
Resources Conservation Service
Issued:  November 21, 2014

UPPER MISSOURI BASIN

OCTOBER PRECIPITATION WAS BELOW AVERAGE ACROSS THE UPPER MISSOURI
BASIN.  BASIN PRECIPITATION SUMMARIES FOR THE MISSOURI BASIN INCLUDE:
MILK ST. MARY, 63 PERCENT; MILK CANADA, 91 PERCENT; LOWER MILK, 78
PERCENT; ABOVE TOSTON, 64 PERCENT; TOSTON TO FT. PECK, 62 PERCENT.

OF THE FOUR MAJOR IRRIGATION RESERVOIRS IN MONTANA:  LIMA RESERVOIR
HAD 105 PERCENT AVERAGE STORAGE, CLARK CANYON WAS HOLDING 67 PERCENT OF
AVERAGE WATER, GIBSON RESERVOIR HAD 70 PERCENT OF AVERAGE STORED
WATER, AND FRESNO RESERVOIR HAD 152 PERCENT OF AVERAGE STORED WATER.
THE  MAJOR  HYDROELECTRIC  RESERVOIRS  IN  MONTANA (CANYON  FERRY AND
FORT PECK) HAD MONTHEND STORAGE IN THE ABOVE AVERAGE RANGE; 103 AND
110 PERCENT OF AVERAGE WATER, RESPECTIVELY.

YELLOWSTONE BASIN

PRECIPITATION DURING THE MONTH OF OCTOBER WAS ABOUT 37 PERCENT OF
AVERAGE IN THE WIND RIVER BASIN ABOVE BOYSEN RESERVOIR, 43 PERCENT
OF AVERAGE IN THE UPPER YELLOWSTONE BASIN, 41 PERCENT OF AVERAGE
IN THE BIGHORN BASIN, AND 33 PERCENT OF AVERAGE IN THE LITTLE
BIGHORN BASINS-UPPER TONGUE BASINS, 42 PERCENT OF AVERAGE IN THE
POWDER RIVER BASIN, AND 42 PERCENT OF AVERAGE IN THE LOWER
YELLOWSTONE BASIN.

MONTHEND STORAGE WAS 103 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 74 PERCENT OF AVERAGE. IN THE
NORTH PLATTE BASIN BETWEEN SEMINOE RESERVOIR AND GUERNSY
RESERVOIR PRECIPITATION WAS 35 PERCENT OF AVERAGE. THE NORTH
PLATTE BASIN BELOW GUERNSY RESERVOIR HAD 21 PERCENT OF AVERAGE
PRECIPITATION. THE HIGH ELEVATIONS OF THE SOUTH PLATTE BASIN HAD
98 PERCENT OF AVERAGE OCTOBER PRECIPITATION WHEREAS THE PLAINS
HAD 76 PERCENT OF AVERAGE PRECIPITATION.

STORED WATER IN THE SOUTH PLATTE BASIN STORED WATER WAS 127 PERCENT
OF AVERAGE. 

PRECIPITATION MAPS

October 2014	WY 2015
October 2014 Precipitation Percent of 1981-2010 Average	WY2015 Precipitation as Percent of 1981-2010 Average
October 2014 Basin Mean Precipitation	WY2015 Basin Mean Precipitation
October 2014 MBRFC Basin Mean Precipitation	WY2015 MBRFC Basin Mean Precipitation