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Baker Project
Baker Project | Project History | Project Data | Contact Information

Project Data
Land Areas (1992)
Area Irrigated and Crop Value



Project # 115


Land Areas (1992)
Irrigable area:
Full Irrigation Service0 acres
Supplemental Service25,682 acres
Temporary Irrigation Service0 acres
Number of Irrigated Farms169
Residential, Commercial, Industrial Lands599 acres
Total Irrigable Lands26,281 acres


Population Served
Farm Population Served535
Non-Farm Population Served1,257
Total Population Served1,792


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Area Irrigated and Crop Value
YearActual Area Irrigated (Acres)Crop Value (Dollars)


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Project Water Supply
Project Water Quality



Project Water Supply

Current Conditions

Reservoir Storage

Major Storage Reservoirs in Southeastern Oregon

Weather Conditions (NOAA)


Snake River at Hells Canyon Dam, Idaho-Oregon State Line (USGS)

Streamflow Forecast Map

Spring and Summer (NRCS)

Snowpack Information

Columbia River Snowpack Summary
Mountain Snowpack Maps for Columbia River Basin
Drought Index

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


Historic Conditions

Annual Precipitation
Normal10.87 in
Maximum - 197815.76 in
Minumum - 19748.05 in
Baker, Oregon 1961-1990 


Mean Annual45.5 F
Daily Maximum - 08/04/1961106 F
Daily Minimum - 12/30/1978-39 F
Baker, Oregon 1961-1996 
Growing Season134 days
Elevation of irrigable area3,300 - 3,470 ft


Powder River
Drainage area above Thief Valley Dam911 mi2
Annual Discharge: 
Maximum - 1984343,469 acre-ft
Minimum - 198836,440 acre-ft
Average - 1978-1996141,529 acre-ft

Streamflows: Powder River below Thief Valley Reservoir, Oregon (USGS)
Streamflows: Powder River at Baker, Oregon (USGS)

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Project Water Quality

Powder River

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Facilities in Operation
Storage Facilities
Pumping Plants



Facilities in Operation
Storage Dams2
Pumping Plants2


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Storage Facilities

Mason Dam

Thief Valley Dam

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Pumping Plants
DesignationNumber of UnitsTotal capacity cfsTotal dynamic head, ftTotal horsepower
Lilley Pumping Plant467.51011,075
Lilley Relift Pumping Plant334.335215


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Last updated: Dec 04, 2009