Water Supply Conditions in the Missouri River Basin for July 2014

Missouri Basin River Forecast Center
Water Supply Statement
Issued in cooperation with the Natural
Resources Conservation Service
Issued:  August 14, 2014

UPPER MISSOURI BASIN

JULY PRECIPITATION WAS BELOW AVERAGE ACROSS THE UPPER MISSOURI
BASIN.  BASIN PRECIPITATION SUMMARIES FOR THE MISSOURI BASIN INCLUDE:
MILK ST. MARY, 70 PERCENT; MILK CANADA, 43 PERCENT; LOWER MILK, 62
PERCENT; ABOVE TOSTON, 53 PERCENT; TOSTON TO FT. PECK, 47 PERCENT.

OF THE FOUR MAJOR IRRIGATION RESERVOIRS IN MONTANA:  LIMA RESERVOIR
HAD 27 PERCENT AVERAGE STORAGE, CLARK CANYON WAS HOLDING 67 PERCENT OF
AVERAGE WATER, GIBSON RESERVOIR HAD 121 PERCENT OF AVERAGE STORED
WATER, AND FRESNO RESERVOIR HAD 141 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
102 PERCENT OF AVERAGE WATER, RESPECTIVELY.

YELLOWSTONE BASIN

PRECIPITATION DURING THE MONTH OF JULY WAS ABOUT 89 PERCENT OF
AVERAGE IN THE WIND RIVER BASIN ABOVE BOYSEN RESERVOIR, 37 PERCENT
OF AVERAGE IN THE UPPER YELLOWSTONE BASIN, 49 PERCENT OF AVERAGE
IN THE BIGHORN BASIN, AND 54 PERCENT OF AVERAGE IN THE LITTLE
BIGHORN BASINS-UPPER TONGUE BASINS, 54 PERCENT OF AVERAGE IN THE
POWDER RIVER BASIN, AND 33 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 JULY IN THE PLATTE BASIN WAS ABOVE
AVERAGE. JULY PRECIPITATION IN THE NORTH PLATTE BASIN
ABOVE SEMINOE RESERVOIR WAS 127 PERCENT OF AVERAGE. IN THE
NORTH PLATTE BASIN BETWEEN SEMINOE RESERVOIR AND GUERNSY
RESERVOIR PRECIPITATION WAS 132 PERCENT OF AVERAGE. THE NORTH
PLATTE BASIN BELOW GUERNSY RESERVOIR HAD 121 PERCENT OF AVERAGE
PRECIPITATION. THE HIGH ELEVATIONS OF THE SOUTH PLATTE BASIN HAD
170 PERCENT OF AVERAGE JULY PRECIPITATION WHEREAS THE PLAINS
HAD 132 PERCENT OF AVERAGE PRECIPITATION.

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

PRECIPITATION MAPS

July 2014	WY 2014
July 2014 Precipitation Percent of 1981-2010 Average	WY2014 Precipitation as Percent of 1981-2010 Average
July 2014 Basin Mean Precipitation	WY2014 Basin Mean Precipitation
July 2014 MBRFC Basin Mean Precipitation	WY2014 MBRFC Basin Mean Precipitation