Moore
Key Takeaway
Moore is classified as high hazard in New Hampshire. It was completed in 1957 and is 69 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 | 149 ft (taller than 99.7% in NH) |
| Dam Length | 2,920 ft |
| Dam Type | Concrete |
| Max Storage | 223.7K acre-ft |
| Normal Storage | 223.7K acre-ft |
| Surface Area | 3,490 acres |
| Drainage Area | 1,600 sq mi |
| Max Discharge | 211,300 cfs |
| Year Completed | 1957 (69 years old) |
| NID ID | NH00414 |
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
Great River Hydro, LLC
Private
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Significant Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Moore?
Moore 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 Moore?
Moore is owned by Great River Hydro, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Moore built?
Moore was completed in 1957, making it 69 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 Moore?
Moore serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Moore?
Moore has a dam height of 149 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 Moore last inspected?
Moore was last inspected on June 7, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.