Lost River Diversion Dam

The dimensions of this dam are given in two sections: the Concrete Section and the Embankment Section. In reference to the Hydraulic Height of the Concrete Section the dimensions are: 24 NWS ft-26 WSft.
Lost River Diversion Dam is on Lost River about 4 miles below Olene, Oregon. The dam diverts excess water to the Klamath River through the Lost River Diversion Channel and controls downstream flow in Lost River to reduce flooding of the reclaimed portions of the Tule Lake bed and to regulate the flow into the restricted sumps of the Tulelake National Wildlife Refuge. It is a horseshoe shaped multiple-arch concrete structure with earth embankment wings. The structural height is 42 feet and crest length is 675 feet.

RegionFacilities in Mid-Pacific | Mid-Pacific Home Page
Dam Type
WatercourseLost River
Location4 mi below Olene, OR
Original Construction1912
Modified Construction
National ID NumberOR00586
Hydrologic Unit Code

Structural Height26.0 ft
Hydraulic Height (Normal Operating Depth at Dam)11 ft
Top Parapet (Elevation)
Spillway Crest Elevation4087.0 ft
Crest Elevation4094.5 ft
Crest Length300 ft
Crest Width10.5 ft
Base Width115.0 ft
Volume of Dam Construction Materials
Streambed at Dam Axis
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)
Top of Inactive Conservation Pool (Elevation)
Top of Dead Storage Pool (Elevation)

Hydraulics & Hydrology
Total Water Storage at Elevation
Maximum Water Surface Elevation
Normal Water Surface Elevation
Spillway Type
Auxiliary Spillway
Spillway Capacity at Elevation10000 cfs at 4094.0
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation
Diversion Capacity at Elevation
Drainage Area
Hydrometeorological Report (HMR)
Probable Maximum Flood (PMF) Report

Contact Information
OwnerNo value defined
OperatorNo value defined

Last updated: Mar 26, 2009