Warm Springs Dam


Warm Springs Dam is on the Middle Fork of the Malheur River about 13 miles southwest of Juntura, Oregon. The dam, constructed by the Warmsprings Irrigation District, is a 106-foot-high thin arch structure, and contains 19,500 cubic yards of concrete. The total capacity of the reservoir is 169,714 acre-feet (active 169,639 acre-feet). In 1926, Reclamation purchased one-half of the storage in the reservoir for use on the Vale Project, and in 1930, added a metal truss flashboard structure on the spillway crest to increase the amount of reservoir storage.


Foundation:  Series of olivine basalt flows

RegionFacilities in Pacific Northwest | Pacific Northwest Home Page
Dam Type
ReservoirWarm Springs
WatercourseMiddle Fork of the Malheur River
Location 13 miles southwest of Juntura, Oregon
Original Construction1918-1919
Modified Construction1930, 1939
National ID NumberOR00082
Hydrologic Unit Code

Structural Height106.0 ft
Hydraulic Height (Normal Operating Depth at Dam)92.0 ft
Top Parapet (Elevation)3410.0 ft
Spillway Crest Elevation3401 ft
Crest Elevation3409.0 ft
Crest Length469.0 ft
Crest Width8.0 ft
Base Width28.0 ft
Volume of Dam Construction Materials19,500 cu yd
Streambed at Dam Axis
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)3406.0 ft
Top of Inactive Conservation Pool (Elevation)
Top of Dead Storage Pool (Elevation)

Hydraulics & Hydrology
Total Water Storage at Elevation169,700 ac-ft at 3406 ft
Maximum Water Surface Elevation3409 ft
Normal Water Surface Elevation3406.0 ft
Spillway TypeOverflow crest controlled by flashboards
Auxiliary Spillway
Spillway Capacity at Elevation9,700 cfs at 3406.0 ft
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation2,000 cfs at 3406.0 ft
Diversion Capacity at Elevation
Drainage Area1,110 sq mi
Hydrometeorological Report (HMR)HMR 57
Probable Maximum Flood (PMF) Report

Contact Information
TitleArea Office Manager
OrganizationSnake River Area Office
Address230 Collins Road
CityBoise, ID 83702-4520
Phone (Fax)208 383-2275
Phone (Office)208 383-2248
OrganizationWarmsprings Irrigation District
Address334 Main Street North
CityVale, OR 97918-1247

Last updated: Jul 26, 2012