Bullhook Lower Diversion
Key Takeaway
Bullhook Lower Diversion is classified as high hazard in Montana. It was completed in 1955 and is 71 years old. Its primary use is flood risk reduction. 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 | 77 ft (taller than 98.4% in MT) |
| Dam Length | 490 ft |
| Dam Type | Earth |
| Max Storage | 785 acre-ft |
| Normal Storage | 430 acre-ft |
| Max Discharge | 24,900 cfs |
| Year Completed | 1955 (71 years old) |
| NID ID | MT00024 |
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 HAVRE
Local Government
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Bullhook Lower Diversion?
Bullhook Lower 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 Bullhook Lower Diversion?
Bullhook Lower Diversion is owned by CITY OF HAVRE (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Bullhook Lower Diversion built?
Bullhook Lower Diversion was completed in 1955, making it 71 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 Bullhook Lower Diversion?
Bullhook Lower Diversion serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Bullhook Lower Diversion?
Bullhook Lower Diversion has a dam height of 77 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 Bullhook Lower Diversion last inspected?
Bullhook Lower Diversion was last inspected on August 19, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.