Warm Springs Dam

Overview

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.

Geology

Foundation: Series of olivine basalt flows

General

Region	Facilities in Pacific Northwest \| Pacific Northwest Home Page
State	Oregon
County	Malheur
Project	Vale
Dam Type
Reservoir	Warm Springs
Watercourse	Middle Fork of the Malheur River
Location	13 miles southwest of Juntura, Oregon
Longitude	-118.2092857
Latitude	43.58505
Original Construction	1918-1919
Modified Construction	1930, 1939
National ID Number	OR00082
Hydrologic Unit Code

Dimensions

Structural Height	106.0 ft
Hydraulic Height (Normal Operating Depth at Dam)	92.0 ft
Top Parapet (Elevation)	3410.0 ft
Spillway Crest Elevation	3401 ft
Crest Elevation	3409.0 ft
Crest Length	469.0 ft
Crest Width	8.0 ft
Base Width	28.0 ft
Volume of Dam Construction Materials	19,500 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 Elevation	169,700 ac-ft at 3406 ft
Maximum Water Surface Elevation	3409 ft
Normal Water Surface Elevation	3406.0 ft
Spillway Type	Overflow crest controlled by flashboards
Auxiliary Spillway
Spillway Capacity at Elevation	9,700 cfs at 3406.0 ft
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation	2,000 cfs at 3406.0 ft
Diversion Capacity at Elevation
Drainage Area	1,110 sq mi
Hydrometeorological Report (HMR)	HMR 57
Probable Maximum Flood (PMF) Report

Contact Information

Owner

Title	Area Office Manager
Organization	Snake River Area Office
Address	230 Collins Road
City	Boise, ID 83702-4520
Phone (Fax)	208 383-2275
Phone (Office)	208 383-2248

Operator

Organization	Warmsprings Irrigation District
Address	334 Main Street North
City	Vale, OR 97918-1247

Last updated: Jul 26, 2012