Harantis Lake Dam
Key Takeaway
Harantis Lake Dam is classified as significant hazard in New Hampshire. It was completed in 1930 and is 96 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 14 ft (taller than 42.1% in NH) |
| Dam Length | 150 ft |
| Dam Type | Concrete |
| Max Storage | 145 acre-ft |
| Normal Storage | 78 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 329 cfs |
| Year Completed | 1930 (96 years old) |
| NID ID | NH00337 |
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
HARANTIS LAKE PROPERTY OWNERS ASSOC
Private
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Significant Hazard 21 ftFrequently Asked Questions
What is the hazard classification of Harantis Lake Dam?
Harantis Lake 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 Harantis Lake Dam?
Harantis Lake Dam is owned by HARANTIS LAKE PROPERTY OWNERS ASSOC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Harantis Lake Dam built?
Harantis Lake Dam was completed in 1930, making it 96 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 Harantis Lake Dam?
Harantis Lake 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 Harantis Lake Dam?
Harantis Lake Dam has a dam height of 14 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 Harantis Lake Dam last inspected?
Harantis Lake Dam was last inspected on September 23, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.