Boise River Diversion
Key Takeaway
Boise River Diversion is classified as high hazard in Idaho. It was completed in 1908 and is 118 years old. Its primary use is irrigation. 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 | 57 ft (taller than 82% in ID) |
| Dam Length | 400 ft |
| Dam Type | Concrete |
| Max Storage | 1.0K acre-ft |
| Normal Storage | 1.0K acre-ft |
| Surface Area | 80 acres |
| Drainage Area | 2,680 sq mi |
| Max Discharge | 40,000 cfs |
| Year Completed | 1908 (118 years old) |
| Year Modified | 1912 |
| NID ID | ID00281 |
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
RECLAMATION
Federal Government
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What is the hazard classification of Boise River Diversion?
Boise River Diversion 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 Boise River Diversion?
Boise River Diversion is owned by RECLAMATION (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Boise River Diversion built?
Boise River Diversion was completed in 1908, making it 118 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 Boise River Diversion?
Boise River Diversion serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Boise River Diversion?
Boise River Diversion has a dam height of 57 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 Boise River Diversion last inspected?
Boise River Diversion was last inspected on February 11, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.