SNOFLO


OWYHEE

RESERVOIR LEVELS
Rock Dam Owyhee River
May 2, 2025


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Located in Malheur County, Oregon, the Owyhee Dam stands as a prominent feature along the Owyhee River. Built in 1931 by the Bureau of Reclamation, this concrete arch dam serves primarily for irrigation purposes, with a storage capacity of 1.2 million acre-feet. The dam stands at an impressive height of 417 feet, with a hydraulic height of 330 feet, creating a reservoir that covers 13,900 acres and serves a drainage area of 10,706 square miles.

With a controlled spillway width of 189 feet and a maximum discharge of 40,000 cubic feet per second, the dam is equipped to manage high hazard potential. The Owyhee Dam, managed by the Bureau of Reclamation, is a critical component in water resource management in the region. Despite its age, the dam continues to play a vital role in providing water for irrigation, demonstrating the lasting impact of this engineering marvel on the local community and environment. For water resource and climate enthusiasts, the Owyhee Dam represents a blend of historic significance and modern functionality in the realm of water infrastructure.

Year_Completed 1931
Dam_Height 417
River_Or_Stream OWYHEE RIVER
Dam_Length 833
Primary_Dam_Type Concrete
Surface_Area 13900
Hydraulic_Height 330
Drainage_Area 10706
Nid_Storage 1200000
Structural_Height 417
Hazard_Potential High
Foundations Rock
Nid_Height 417
       

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