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Arnold Project
Arnold Project | Project History | Project Data | Contact Information

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

Project Water Supply
Project Water Quality


Project # 564


Land Areas (1992)
Irrigable area:
Full Irigation Service2,456 acres
Supplimental Service0 acres
Temporary Irrigation Service0 acres
Number of Irrigated Farms1,836 acres
Redidential, Commercial, Industrial Lands1,836 acres
Total Irrigable Lands4,292 acres


Population Served
Farm Population Served501
Non-Farm Population Served6,426
Total Population Served6,927


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


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Project Water Supply

Current Conditions

Reservoir Storage

Major Storage Resovoirs in the Deschutes River Basin

Weather Conditions (NOAA)


Deschutes River near Madras, Oregon (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
Normal21.26 in
Maximum - 198333.72 in
Minimum - 197613.58 in
Wickiup Dam, Oregon 1961-1990 


Mean Annual43.2 ?F
Daily Maximum - 09/25/1943101 ?F
Daily Minimum - 01/31/1950-40 ?F
Wickiup Dam, Oregon 1941-1996 
Growing Season93 days
Elevation of irrigable area3,700 - 3,900 ft


Deschutes River
Drainage area above Crane Prarie Reservoir132 mi2
Annual discharge: 
Maximum - 1956187,173 acre-ft
Minimum - 194144,251 acre-ft
Average - 1937-1991106,933 acre-ft


Deschutes River below Snow Creek near LaPine, Oregon (USGS)


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Project Water Quality

Upper Deschutes River

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Facilities in Operation
Storage Facilities
Diversion Facilities



Facilities in Operation
Storage Dams1
Diversion Dams1
Canals11 mi
Laterals25 mi


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Storage Facilities

Crane Prairie Dam

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Diversion Facilities
Arnold Diversion Dam
TypeRockfill, concrete weir
LocationOn Deschutes River about 5 miles upstream of Bend, Oregon
Year Completed1951
Crest length3 ft
Volume1,000 yd3
Diversion Capacity120 cfs


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Last updated: Dec 04, 2009