Owyhee
OWYHEE RIVER·
Malheur, Oregon·
Built 1931·
Concrete·
417 ft tall
Physical Details
| Dam Height | 417 ft (taller than 99.6% in OR) |
| Dam Length | 833 ft |
| Dam Type | Concrete |
| Max Storage | 1.2M acre-ft |
| Normal Storage | 1.1M acre-ft |
| Surface Area | 13,900 acres |
| Drainage Area | 10,706 sq mi |
| Max Discharge | 40,000 cfs |
| Year Completed | 1931 (95 years old) |
| NID ID | OR00582 |
Safety Information
High Hazard
Loss of human life is likely if the dam fails
Emergency Action Plan: Yes
Last Inspection: June 23, 2020
State Regulated: No
Ownership
RECLAMATION
Federal Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Owyhee?
Owyhee is classified as High Hazard. Loss of human life is likely if the dam fails.
Who owns Owyhee?
Owyhee is owned by RECLAMATION (Federal Government).
When was Owyhee last inspected?
Owyhee was last inspected on June 23, 2020.
When was Owyhee built?
Owyhee was completed in 1931, making it 95 years old.
Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.