Moyie
Key Takeaway
Moyie is classified as high hazard in Idaho. It was completed in 1949 and is 77 years old. Its primary use is hydroelectric. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 62 ft (taller than 84.8% in ID) |
| Dam Length | 376 ft |
| Dam Type | Gravity |
| Max Storage | 540 acre-ft |
| Normal Storage | 540 acre-ft |
| Surface Area | 45 acres |
| Drainage Area | 755 sq mi |
| Max Discharge | 21,000 cfs |
| Year Completed | 1949 (77 years old) |
| NID ID | ID00155 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
City of Bonners Ferry
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Moyie?
Moyie is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Moyie?
Moyie is owned by City of Bonners Ferry (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Moyie built?
Moyie was completed in 1949, making it 77 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Moyie?
Moyie serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Moyie?
Moyie has a dam height of 62 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Moyie last inspected?
Moyie was last inspected on August 30, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.