Spencer
Key Takeaway
Spencer is classified as significant hazard in Idaho. It was completed in 1939 and is 87 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 23 ft (taller than 37% in ID) |
| Dam Length | 250 ft |
| Normal Storage | 160 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 23 sq mi |
| Max Discharge | 650 cfs |
| Year Completed | 1939 (87 years old) |
| Year Modified | 1993 |
| NID ID | ID00096 |
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
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Spencer?
Spencer 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 Spencer?
Spencer is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Spencer built?
Spencer was completed in 1939, making it 87 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 Spencer?
Spencer serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Spencer?
Spencer has a dam height of 23 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 Spencer last inspected?
Spencer was last inspected on June 5, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.