Hells Canyon Dam
SNAKE RIVER·
Wallowa, Oregon·
Built 1968·
Concrete·
320 ft tall
Physical Details
| Dam Height | 320 ft (taller than 99% in OR) |
| Dam Length | 1,000 ft |
| Dam Type | Concrete |
| Max Storage | 200.0K acre-ft |
| Normal Storage | 183.0K acre-ft |
| Surface Area | 2,412 acres |
| Drainage Area | 73,300 sq mi |
| Max Discharge | 210,000 cfs |
| Year Completed | 1968 (58 years old) |
| NID ID | OR00250 |
Safety Information
High Hazard
Loss of human life is likely if the dam fails
Emergency Action Plan: Yes
State Regulated: Yes
Regulatory Agency: OWRD
Ownership
IDAHO POWER COMPANY
Public Utility
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Hells Canyon Dam?
Hells Canyon Dam is classified as High Hazard. Loss of human life is likely if the dam fails.
Who owns Hells Canyon Dam?
Hells Canyon Dam is owned by IDAHO POWER COMPANY (Public Utility).
When was Hells Canyon Dam built?
Hells Canyon Dam was completed in 1968, making it 58 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.