Dan Hole River Dam
Key Takeaway
Dan Hole River Dam is classified as significant hazard in New Hampshire. It was completed in 1935 and is 91 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 29 ft (taller than 86% in NH) |
| Dam Length | 140 ft |
| Dam Type | Concrete |
| Max Storage | 77 acre-ft |
| Normal Storage | 67 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 12 sq mi |
| Year Completed | 1935 (91 years old) |
| NID ID | NH00569 |
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
TOWN OF OSSIPEE
Local Government
Nearby Dams
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Low Hazard 8 ftHuckins Mill Pond Dam
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Low Hazard 10 ftOssipee Lake Dam Headworks Dam
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Low Hazard 12 ftCopps Pond Dam
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High Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Dan Hole River Dam?
Dan Hole River Dam 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 Dan Hole River Dam?
Dan Hole River Dam is owned by TOWN OF OSSIPEE (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dan Hole River Dam built?
Dan Hole River Dam was completed in 1935, making it 91 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 Dan Hole River Dam?
Dan Hole River Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Dan Hole River Dam?
Dan Hole River Dam 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 Dan Hole River Dam last inspected?
Dan Hole River Dam was last inspected on September 26, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.