Big Dan Hole Pond Dam
Key Takeaway
Big Dan Hole Pond Dam is classified as significant hazard in New Hampshire. It was completed in 1910 and is 116 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 13 ft (taller than 36.5% in NH) |
| Dam Length | 114 ft |
| Dam Type | Concrete |
| Max Storage | 23.1K acre-ft |
| Normal Storage | 22.4K acre-ft |
| Surface Area | 443 acres |
| Drainage Area | 6 sq mi |
| Year Completed | 1910 (116 years old) |
| Year Modified | 1950 |
| NID ID | NH00376 |
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
Dan Hole River Dam
Carroll, NH
Significant Hazard 29 ftLower Beech Pond Dam
Carroll, NH
Low Hazard 10 ftBeech River Mill Dam
Carroll, NH
High Hazard 14 ftCopps Pond Dam
Carroll, NH
High Hazard 16 ftMelvin River Dam
Carroll, NH
Significant Hazard 17 ftShannon Lake Dam
Carroll, NH
Significant Hazard 20 ftSilver Lake Dam
Carroll, NH
Low Hazard 8 ftWolfeboro Sewage Lagoon Dam
Carroll, NH
High Hazard 45 ftFrequently Asked Questions
What is the hazard classification of Big Dan Hole Pond Dam?
Big Dan Hole Pond 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 Big Dan Hole Pond Dam?
Big Dan Hole Pond Dam is owned by TOWN OF OSSIPEE (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Big Dan Hole Pond Dam built?
Big Dan Hole Pond Dam was completed in 1910, making it 116 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 Big Dan Hole Pond Dam?
Big Dan Hole Pond 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 Big Dan Hole Pond Dam?
Big Dan Hole Pond Dam has a dam height of 13 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 Big Dan Hole Pond Dam last inspected?
Big Dan Hole Pond Dam was last inspected on September 26, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.