Ossipee Lake Dam Headworks Dam
Key Takeaway
Ossipee Lake Dam Headworks Dam is classified as low hazard in New Hampshire. It was completed in 1919 and is 107 years old. Its primary use is recreation.
Physical Details
| Dam Height | 12 ft (taller than 28.2% in NH) |
| Dam Length | 129 ft |
| Dam Type | Concrete |
| Max Storage | 47.2K acre-ft |
| Normal Storage | 23.3K acre-ft |
| Surface Area | 4,095 acres |
| Drainage Area | 357 sq mi |
| Max Discharge | 2,720 cfs |
| Year Completed | 1919 (107 years old) |
| Year Modified | 1944 |
| NID ID | NH00328 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
NH DES WATER DIVISION
State Government
Nearby Dams
Ossipee Lake Dam Berry Bay
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Low Hazard 35 ftHuckins Mill Pond Dam
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Low Hazard 10 ftPurity Lake Dam
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High Hazard 13 ftBeech River Mill Dam
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High Hazard 14 ftBickford Pond
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Significant Hazard 11 ftDan Hole River Dam
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Significant Hazard 29 ftFrequently Asked Questions
What is the hazard classification of Ossipee Lake Dam Headworks Dam?
Ossipee Lake Dam Headworks Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Ossipee Lake Dam Headworks Dam?
Ossipee Lake Dam Headworks Dam is owned by NH DES WATER DIVISION (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Ossipee Lake Dam Headworks Dam built?
Ossipee Lake Dam Headworks Dam was completed in 1919, making it 107 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 Ossipee Lake Dam Headworks Dam?
Ossipee Lake Dam Headworks 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 Ossipee Lake Dam Headworks Dam?
Ossipee Lake Dam Headworks Dam has a dam height of 12 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 Ossipee Lake Dam Headworks Dam last inspected?
Ossipee Lake Dam Headworks Dam was last inspected on October 18, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.