Missouri Basin River Forecast Center
Water Supply Statement
Issued in cooperation with the Natural
Resources Conservation Service
Issued:  February 13, 2013

 


           February 1, 2013 Spring and Summer Streamflow Forecasts


 


Missouri River Basin Streamflow Forecast             Missouri River Basin Mountain Snowpack


 

Upper Missouri Basin

 


THE HIGH ELEVATION SNOW PACK IN THE UPPER MISSOURI BASIN AS OF
FEBRUARY 1 WAS NEAR TO SLIGHTLY BELOW AVERAGE. THE SNOW PACK ABOVE TOSTON,
MONTANA WAS 103 PERCENT OF AVERAGE. THE SNOW PACK BETWEEN TOSTON
AND FORT PECK, MONTANA WAS 87 PERCENT. THE SNOW PACK IN THE
ST MARY AND MILK RIVER BASINS WAS 103 PERCENT.

JANUARY PRECIPITATION ACROSS THE UPPER MISSOURI BASIN WAS MOSTLY BELOW
AVERAGE. BASIN PRECIPITATION SUMMARIES FOR THE MISSOURI BASIN
INCLUDE: MILK ST. MARY, 109 PERCENT; MILK CANADA, 55 PERCENT;
LOWER MILK, 59 PERCENT; ABOVE TOSTON, 55 PERCENT; TOSTON TO
FT. PECK, 49 PERCENT.

 


January 2013 Upper Missouri Mean Precip                     Oct-Jan WY2013 Upper Missouri Mean Precip

 

STREAM FLOW IN THE UPPER MISSOURI BASIN IS FORECAST TO BE NEAR OR
SLIGHTLY BELOW AVERAGE DURING THE UPCOMING SPRING AND SUMMER. THE ST.
MARY RIVER IS FORECAST TO HAVE 102 PERCENT OF AVERAGE APRIL-SEPTEMBER
FLOWS. RUNOFF IS EXPECTED TO RANGE AROUND 93 PERCENT OF AVERAGE
FOR THE MISSOURI BASIN ABOVE FORT PECK, MONTANA.





     Upper Missouri February 1, 2013 Spring and Summer Streamflow Forecasts


OF THE FOUR MAJOR IRRIGATION RESERVOIRS IN MONTANA: LIMA RESERVOIR
HAD 133 PERCENT AVERAGE STORAGE, CLARK CANYON WAS HOLDING 96 PERCENT OF
AVERAGE WATER, GIBSON RESERVOIR HAD 39 PERCENT OF AVERAGE STORED
WATER, AND FRESNO RESERVOIR HAD 115 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; 101 AND 100 PERCENT OF AVERAGE WATER, RESPECTIVELY.

 



Yellowstone Basin

 

THE HIGH ELEVATION SNOW PACK IN THE YELLOWSTONE BASIN WAS NEAR TO SLIGHTLY
BELOW AVERAGE ON FEBRUARY 1. THE SNOW PACK IN THE UPPER YELLOWSTONE BASIN
WAS 99 PERCENT OF AVERAGE. THE SNOW PACKS IN THE WIND, BIGHORN, AND
SHOSHONE BASINS WERE 88, 93, AND 96 PERCENT OF AVERAGE,
RESPECTIVELY. THE SNOW PACKS IN THE TONGUE AND POWDER BASINS WERE
83 AND 96 PERCENT OF AVERAGE, RESPECTIVELY.

PRECIPITATION DURING JANUARY WAS BELOW AVERAGE. THE UPPER YELLOWSTONE
RIVER BASIN RECEIVED 47 PERCENT OF AVERAGE PRECIPITATION
WHILE THE LOWER YELLOWSTONE BASIN REPORTED 31 PERCENT OF AVERAGE.
THE BIGHORN BASIN RECEIVED 53 PERCENT OF AVERAGE PRECIPITATION
WHILE THE WIND RIVER BASIN RECEIVED 27 PERCENT OF AVERAGE.
THE LITTLE BIGHORN - UPPER TONGUE BASIN RECEIVED 59 PERCENT OF
AVERAGE AND THE POWDER RIVER HAD 24 PERCENT OF AVERAGE PRECIPITATION.

 



Yellowstone Basin

 
  January 2013 Yellowstone Mean Precip                    Oct-Jan WY2013 Yellowstone Mean Precip

STREAM FLOW IN THE YELLOWSTONE BASIN IS FORECAST BELOW 
AVERAGE FOR THE UPCOMING SPRING AND SUMMER. STREAM
FLOW FOR THE WIND-BIGHORN BASIN ABOVE ST. XAVIER, MONTANA IS
FORECAST TO BE ABOUT 83 PERCENT OF AVERAGE. FLOW IN THE
TONGUE BASIN IS EXPECTED TO BE 71 PERCENT OF AVERAGE. FLOWS IN THE
POWDER RIVER ARE EXPECTED TO BE ABOUT 89 PERCENT OF AVERAGE.

MONTHEND STORAGE AT BOYSEN RESERVOIR WAS 94 PERCENT OF AVERAGE.
STORED WATER IN BUFFALO BILL RESERVOIR WAS 122 PERCENT OF AVERAGE.
MONTHEND STORAGE WAS 106 PERCENT OF AVERAGE AT BIGHORN RESERVOIR.

 


     Yellowstone February 1, 2013 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 28 PERCENT OF AVERAGE.
THE SNOW PACK IN THE SOUTH PLATTE BASIN WAS 62 PERCENT OF AVERAGE.

JANUARY PRECIPITATION ACROSS THE PLATTE BASIN WAS BELOW
AVERAGE. PRECIPITATION IN THE NORTH PLATTE BASIN ABOVE
SEMINOE RESERVOIR WAS 33 PERCENT OF AVERAGE. IN THE
NORTH PLATTE BASIN BETWEEN SEMINOE RESERVOIR AND GUERNSY RESERVOIR
PRECIPITATION WAS 16 PERCENT OF AVERAGE. THE NORTH PLATTE BASIN
BELOW GUERNSY RESERVOIR HAD 7 PERCENT OF AVERAGE PRECIPITATION.
THE HIGH ELEVATIONS OF THE SOUTH PLATTE BASIN HAD 16 PERCENT OF
AVERAGE PRECIPITATION WHEREAS THE PLAINS HAD 10 PERCENT OF AVERAGE
JANUARY PRECIPITATION.





 

January 2013 Platte Mean Precip                          Oct-Jan WY2013 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
55 TO 65 PERCENT OF AVERAGE. STREAM FLOWS FOR THE NORTH PLATTE
BELOW SEMINOE RESERVOIR ARE FORECAST TO BE 45 TO 55 PERCENT OF
AVERAGE. STREAMS IN THE SOUTH PLATTE BASIN ABOVE SOUTH PLATTE,
COLORADO CAN EXPECT 45 TO 55 PERCENT OF AVERAGE FLOW. FOR THE
REMAINDER OF THE SOUTH PLATTE BASIN FLOWS ARE EXPECTED VARY FROM
55 TO 65 PERCENT OF AVERAGE.

STORED WATER IN THE SOUTH PLATTE BASIN WAS 80 PERCENT OF AVERAGE
ON FEBRUARY 1. STORED WATER IN THE NORTH PLATTE BASIN WAS 89
PERCENT OF AVERAGE.


North Platte Streamflow Fcst
South Platte Streamflow Fcst


Precipitation Maps


January 2013 Oct-Jan WY 2013

                          

January 2013 Precipitation Percent of 1971-2000 Average    Oct-Jan  WY2013 Precipitation as Percent of 1971-2000 Average


 January 2013 Basin Mean Precipitation                     Oct-Jan WY2013 Basin Mean Precipitation


                               

January 2013 MBRFC Basin Mean Precipitation          Oct-Jan WY2013 MBRFC Basin Mean Precipitation

 


 


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