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Grants Pass Project
Grants Pass Project | Project History | Project Data | Contact Information

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



Project # 712


Land Areas (1992)
Irrigable area:
Full Irrigation Service0 acres
Supplemental Service0 acres
Temporary Irrigation Service0 acres
Number of Irrigated Farms0
Residential, Commercial, Industrial Lands10,081 acres
Total Irrigable Lands10,081 acres


Population Served
Farm Population Served0
Non-Farm Population Served32,259
Total Population Served32,259


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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 the Rogue River Basin

Weather Conditions (NOAA)



Rogue River at Grants Pass, Oregon (USGS)

Streamflow Forecast Map

Spring and Summer (NRCS)

Snowpack Information

Mountain Snowpack Maps for the Pacific Northwest (NRCS)

Drought Index

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


Historic Conditions

Annual Precipitation
Normal31.01 in
Maximum - 198349.78 in
Minimum - 197615.35 in
Grants Pass, Oregon 1961-1990 


Mean Annual54.6 ?F
Daily Maximum - 07/23/1928114 ?F
Daily Minimum - 12/08/1972-1 ?F
Grants Pass, Oregon 1928-1996 
Growing Season242 days
Elevation of irrigable area900 ft


Rogue River
Drainage area at Grants Pass2,459 sq mi
Annual discharge: 
Maximum - 19833,982,354 acre-ft
Minimum - 19921,108,521 acre-ft
Average - 1939-19962,442,386 acre-ft



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Project Water Quality


Lower Rogue

Middle Rogue


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Facilities in Operation
Storage Facilities
Regulatory Facilities
Diversion Facilities
Carriage Facilities
Pumping Plants



Facilities in Operation
Facilities in Operation
Diversion Dams1
Canals67 mi
Laterals67 mi
Pumping Plants6


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Storage Facilities

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Regulatory Facilities

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Diversion Facilities
Savage Rapids Dam
Type:Concrete, combination gravity and multiple arch, stoplogged crested
LocationOn Rogue River, about 5 miles east of Grants Pass, Oregon.
Year Completed1921
Structural height39 ft
Hydraulic height30 ft
Crest length456 ft
Crest elevation953.0 ft
Volume5,600 cu yd
Spillway:Overflow through stoplog-controlled gate openings. Metal stoplogs in one 11- by 19-ft and fifteen 11- by 23-ft bays. Sluiceways: Four 4- by 6-ft gates at north end of dam.
Capacity2,000 cfs
River outlets:Two 7- by 16-ft top seal radial gates at center of dam.
Capacity6,000 cfs
Gravity diversion:Two gates at left abutment for Grants Pass Irrigation District.
Capacity100 cfs
Pumping diversion:Pumping plant at right abutment with two pumps in series that have a lift of 150 ft for Tokay Canal. Also, a pump with a 90-ft lift for South Highline Canal.
Capacity50 cfs for Tokay Canal and 75-cfs for South Highline Canal.


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Carriage Facilities



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Pumping Plants
DesignationNumber of unitsTotal capacity, cfsTotal dynamic head, ftTotal horsepower
Savage Rapids212590-1501,800
Jerome Prairie224.590325
Allen Creek14.275.550
Dowell Road126625


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Last updated: Jun 15, 2009