Hancock
Key Takeaway
Hancock is classified as significant hazard in Idaho. It was completed in 1931 and is 95 years old. Its primary use is fish and wildlife pond. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 29 ft (taller than 53.7% in ID) |
| Dam Length | 170 ft |
| Normal Storage | 198 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 291 cfs |
| Year Completed | 1931 (95 years old) |
| Year Modified | 2008 |
| NID ID | ID00145 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
State Government
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Significant Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Hancock?
Hancock is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Hancock?
Hancock is owned by information not available (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hancock built?
Hancock was completed in 1931, making it 95 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 Hancock?
Hancock serves the following purposes: Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hancock?
Hancock has a dam height of 29 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 Hancock last inspected?
Hancock was last inspected on September 20, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.