Missouri Basin River Forecast Center
Water Supply Statement
Issued in cooperation with the Natural
Resources Conservation Service
Issued:  February 17, 2015

 


  

 Missouri River Basin Streamflow Forecast as of February 1, 2015       Missouri River Basin Mountain Snowpack as of February 1, 2015

 


Upper Missouri Basin 


THE HIGH ELEVATION SNOW PACK IN THE UPPER MISSOURI BASIN AS OF
FEBRUARY 1 WAS NEAR TO ABOVE AVERAGE. THE SNOW PACK ABOVE TOSTON,
MONTANA WAS 122 PERCENT OF AVERAGE. THE SNOW PACK BETWEEN TOSTON
AND FORT PECK, MONTANA WAS 108 PERCENT. THE SNOW PACK IN THE
ST MARY AND MILK RIVER BASINS WAS 79 PERCENT.

JANUARY PRECIPITATION ACROSS THE UPPER MISSOURI BASIN RANGED FROM BELOW
TO ABOVE AVERAGE. BASIN PRECIPITATION SUMMARIES FOR THE MISSOURI BASIN
INCLUDE: MILK ST. MARY, 85 PERCENT; MILK CANADA, 209 PERCENT;
LOWER MILK, 161 PERCENT; ABOVE TOSTON, 57 PERCENT; TOSTON TO
FT. PECK, 158 PERCENT.

 


January 2015 Upper Missouri Mean Precip                Oct-Jan WY2015 Upper Missouri Mean Precip

 

STREAM FLOW IN THE UPPER MISSOURI BASIN IS FORECAST TO BE
BELOW AVERAGE DURING THE UPCOMING SPRING AND SUMMER. THE ST.
MARY RIVER IS FORECAST TO HAVE 82 PERCENT OF AVERAGE APRIL-SEPTEMBER
FLOWS. RUNOFF IS EXPECTED TO BE NEAR 88 PERCENT OF AVERAGE
FOR THE MISSOURI BASIN ABOVE FORT PECK, MONTANA.





     Upper Missouri February 1, 2015 Spring and Summer Streamflow Forecasts


OF THE FOUR MAJOR IRRIGATION RESERVOIRS IN MONTANA: LIMA RESERVOIR
HAD 114 PERCENT AVERAGE STORAGE, CLARK CANYON WAS HOLDING 82 PERCENT OF
AVERAGE WATER, GIBSON RESERVOIR HAD 43 PERCENT OF AVERAGE STORED
WATER, AND FRESNO RESERVOIR HAD 168 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; 102 AND 116 PERCENT OF AVERAGE WATER, RESPECTIVELY.

 



Yellowstone Basin

 

THE HIGH ELEVATION SNOW PACK IN THE YELLOWSTONE BASIN WAS NEAR AVERAGE
ON FEBRUARY 1. THE SNOW PACK IN THE UPPER YELLOWSTONE BASIN WAS
111 PERCENT OF AVERAGE. THE SNOW PACKS IN THE WIND, BIGHORN, AND
SHOSHONE BASINS WERE 94, 106, AND 105 PERCENT OF AVERAGE,
RESPECTIVELY. THE SNOW PACKS IN THE TONGUE AND POWDER BASINS WERE
96 AND 113 PERCENT OF AVERAGE, RESPECTIVELY.


PRECIPITATION DURING JANUARY RANGED FROM BELOW TO ABOVE AVERAGE. THE UPPER
YELLOWSTONE RIVER BASIN RECEIVED 107 PERCENT OF AVERAGE PRECIPITATION
WHILE THE LOWER YELLOWSTONE BASIN REPORTED 141 PERCENT OF AVERAGE.
THE BIGHORN BASIN RECEIVED 83 PERCENT OF AVERAGE PRECIPITATION
WHILE THE WIND RIVER BASIN RECEIVED 42 PERCENT OF AVERAGE.
THE LITTLE BIGHORN - UPPER TONGUE BASIN RECEIVED 128 PERCENT OF
AVERAGE AND THE POWDER RIVER HAD 78 PERCENT OF AVERAGE PRECIPITATION.

 



 January 2015 Yellowstone Mean Precip                    Oct-Jan WY2015 Yellowstone Mean Precip

FORECAST STREAM FLOW IN THE YELLOWSTONE BASIN IS NEAR
AVERAGE FOR THE UPCOMING SPRING AND SUMMER. STREAM
FLOW FOR THE WIND-BIGHORN BASIN ABOVE ST. XAVIER, MONTANA IS
FORECAST TO BE ABOUT 88 PERCENT OF AVERAGE. FLOW IN THE
TONGUE BASIN IS EXPECTED TO BE 95 PERCENT OF AVERAGE. FLOWS IN THE
POWDER RIVER ARE EXPECTED TO BE ABOUT 95 PERCENT OF AVERAGE.

MONTHEND STORAGE AT BOYSEN RESERVOIR WAS 125 PERCENT OF AVERAGE.
STORED WATER IN BUFFALO BILL RESERVOIR WAS 131 PERCENT OF AVERAGE.
MONTHEND STORAGE WAS 106 PERCENT OF AVERAGE AT BIGHORN RESERVOIR.

 


     Yellowstone February 1, 2015 Spring and Summer Streamflow Forecasts

 

Platte Basin  


THE HIGH ELEVATION  SNOW PACK IN THE UPPER NORTH PLATTE BASIN WAS
74 PERCENT OF AVERAGE ON FEBRUARY 1. THE SNOW PACK IN THE NORTH
PLATTE BASIN BELOW SEMINOE RESERVOIR WAS 76 PERCENT OF AVERAGE.
THE SNOW PACK IN THE SOUTH PLATTE BASIN WAS 86 PERCENT OF AVERAGE.
JANUARY PRECIPITATION ACROSS THE PLATTE BASIN WAS BELOW  
AVERAGE. PRECIPITATION DURING JANUARY IN THE NORTH PLATTE
BASIN ABOVE SEMINOE RESERVOIR WAS 41 PERCENT OF AVERAGE. IN THE
NORTH PLATTE BASIN BETWEEN SEMINOE RESERVOIR AND GUERNSY RESERVOIR
PRECIPITATION WAS 54 PERCENT OF AVERAGE. THE NORTH PLATTE BASIN
BELOW GUERNSY RESERVOIR HAD 71 PERCENT OF AVERAGE PRECIPITATION.
THE HIGH ELEVATIONS OF THE SOUTH PLATTE BASIN HAD 85 PERCENT OF
AVERAGE PRECIPITATION WHEREAS THE PLAINS HAD 67 PERCENT OF AVERAGE
JANUARY PRECIPITATION.





 January 2015 Platte Mean Precip                          Oct-Jan WY2015 Platte Mean Precip

 

STREAM FLOW IN THE PLATTE BASIN IS FORECAST TO BE BELOW
AVERAGE DURING THE UPCOMING SPRING AND SUMMER.
RUNOFF FOR STREAMS ABOVE SEMINOE RESERVOIR ARE EXPECTED TO BE ABOUT
62 PERCENT OF AVERAGE.  STREAM FLOWS FOR THE NORTH PLATTE
BELOW SEMINOE RESERVOIR ARE FORECAST TO BE 55 PERCENT OF
AVERAGE. STREAMS IN THE SOUTH PLATTE BASIN ABOVE SOUTH PLATTE,
COLORADO CAN EXPECT 90 PERCENT OF AVERAGE FLOW. FOR THE
REMAINDER OF THE SOUTH PLATTE BASIN FLOWS ARE EXPECTED NEAR
94 PERCENT OF AVERAGE.


STORED WATER IN THE SOUTH PLATTE BASIN WAS 119 PERCENT OF AVERAGE
ON FEBRUARY 1. STORED WATER IN THE NORTH PLATTE BASIN WAS 119
PERCENT OF AVERAGE.


North Platte Streamflow Fcst
South Platte Streamflow Fcst


Precipitation Maps


January 2015 Oct-Jan WY 2015

                          

January 2015 Precip Percent of 1981-2010 Avg    Oct-Jan  WY2015 Precip as Percent of 1981-2010 Avg


 January 2015 Basin Mean Precipitation                     Oct-Jan WY2015 Basin Mean Precipitation


                               

January 2015 MBRFC Basin Mean Precipitation          Oct-Jan WY2015 MBRFC Basin Mean Precipitation

 


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