PSMBP - East Bench Unit Water Data


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PSMBP - East Bench Unit
Water Data

PSMBP - East Bench Unit - Main Page

Project Water Supply

Current Conditions:

Reservoir Storage

Clark Canyon Reservoir

Weather Conditions (NOAA)

Beaverhead, Montana

Gallatin/Madison, Montana

Precipitation

Streamflow

Beaverhead River at Barretts, Montana (USGS)
Beaverhead River near Twin Bridges, Montana (USGS)

Streamflow Forecast Map

Spring and Summer (NRCS)

Snowpack Information

Mountain Snowpack Maps for Missouri River Basin

Drought Index

Palmer Drought Index Map
Explanation of Palmer Drought Severity Index (Text)

Historic Conditions:

Annual Precipitation

Normal	10.21 in
Maximum - 1987	14.60 in
Minimum - 1966	6.26 in
Dillon, Montana 1961-1990

Temperature

Mean Annual	56.2 °F
Daily Maximum - 07/20/1960	101 °F
Daily Minimum - 12/24/1983	-37 °F
Dillon, Montana 1948-1992
Growing Season	95 days
Elevation of irrigable area	4,700 - 5,450 ft

Beaverhead River

Drainage area at Barretts, Montana	2,737 mi²
Annual discharge:
Maximum - 1984	828,787 acre-ft
Minimum - 1907	72,359 acre-ft
Average - 1907-1996	283,022 acre-ft

Project Water Quality

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