NWS Missouri Basin/Pleasant Hill MO

Missouri Basin River Forecast Center
Water Supply Statement
Issued in cooperation with the Natural
Resources Conservation Service
Issued:  July 12, 2006

MOST OF THE MISSOURI BASIN REPORTED BELOW AVERAGE PRECIPITATION
DURING JUNE.  ALSO, STREAMFLOW DATA INDICATES THE FLOWS FOR THE
MONTH JUNE WERE BELOW AVERAGE.

PRECIPITATION IN THE MISSOURI BASIN DURING JUNE RANGED FROM BELOW
AVERAGE TO ABOVE AVERAGE, WITH MOST OF THE BASIN REPORTING BELOW
AVERAGE PRECIPITATION. PRECIPITATION IN MONTANA RANGED FROM ABOVE
TO BELOW AVERAGE, WITH AMOUNTS RANGING FROM A 11 PERCENT OF
AVERAGE (0.27 IN.)AT PLEVA, MONTANA TO 262 PERCENT OF AVERAGE
(4.00 IN.) SUN RIVER 4SSW, MONTANA. PRECIPITATION IN WYOMING
WAS GENERALY BELOW AVERAGE WITH REPORTS RANGING FROM A 1 PERCENT
OF AVERAGE (0.02 IN.) AT CASPER, WYOMING TO 127 PERCENT OF AVERAGE
(2.91 IN.) AT LARMAR RANGER STATION, WYOMING. PRECIPITATION
IN NORTHEASTERN COLORADO WAS GENERALLY BELOW AVERAGE, WITH REPORTS
RANGING FROM 7 PERCENT OF AVERAGE (0.10 IN.) AT GEORGETOWN
3SSW, COLORADO TO 182 PERCENT OF AVERAGE (4.22 IN.)
AT GENOA 1W, COLORADO.
 

BASIN PRECIPITATION SUMMARIES FOR THE MISSOURI BASIN:
 

BASIN AVERAGE PRECIPITATION
MILK ST. MARY              138%
MILK CANADA                139%
ABOVE TOSTON               112%
TOSTON TO FT. PECK         106%
LOWER MILK                  82%
UPPER YELLOWSTONE           80%
WIND RIVER                  17%
BIGHORN                     25%
LITTLE BIGHORN TONGUE       28%
POWDER                      32%
LOWER YELLOWSTONE           43%
UPPER NORTH PLATTE          34%
LOWER NORTH PLATTE          19%
SOUTH PLATTE MOUNTAINS      32%
SOUTH PLATTE PLAINS         37%

June 2006 Basin Mean Precipitation

STORED WATER IN THE SOUTH PLATTE BASIN AS OF JULY 1 WAS 76
PERCENT OF AVERAGE. STORED WATER IN THE WAS 58 PERCENT OF
AVERAGE FOR THIS TIME OF THE YEAR. BOYSEN RESERVOIR HELD 70
PERCENT OF AVERAGE JULY 1 STORAGE WHILE BUFFALO BILL RESERVOIR
HELD 166 PERCENT. OF THE FOUR MAJOR IRRIGATION RESERVOIRS
IN MONTANA, LIMA RESERVOIR HAD 143 PERCENT AVERAGE STORAGE;
CLARK CANYON WAS HOLDING 64 PERCENT OF AVERAGE WATER, GIBSON
RESERVOIR HAD 96 PERCENT OF AVERAGE STORED WATER AND FRESNO
RESERVOIR HAD 107 PERCENT OF AVERAGE STORED WATER. OF THE
THREE MAJOR HYDROELECTRIC RESERVOIRS IN MONTANA, CANYON FERRY
AND FORT PECK HAD MONTHEND STORAGE IN THE AVERAGE RANGE; 99
AND 62 PERCENT OF AVERAGE WATER, RESPECTIVELY. BIGHORN RESERVOIR
WAS HOLDING 80 PERCENT OF AVERAGE STORED WATER.
 

RUNOFF DURING JUNE, AS INDICATED BY U.S. GEOLOGICAL SURVEY LONG
TERM GAGING STATIONS, WAS BELOW AVERAGE. THE MARIAS RIVER
NEAR SHELBY, MONTANA HAD 84 PERCENT OF AVERAGE RUNOFF.
THE YELLOWSTONE RIVER WAS ESTIMATED TO HAVE HAD 87 PERCENT OF
AVERAGE RUNOFF AT CORWIN SPRINGS, WHILE AT BILLINGS, MONTANA
RUNOFF WAS 72 PERCENT OF AVERAGE.

PRECIPITATION MAPS

June 2006	WY 2006
June 2006 Precipitation Percent of 1971-2000 Average	WY2006 Precipitation as Percent of 1971-2000 Average
June 2006 Basin Mean Precipitation	WY2006 Basin Mean Precipitation
June 2006 MBRFC Basin Mean Precipitation	WY2006 MBRFC Basin Mean Precipitation