Frog Pond Dam
Key Takeaway
Frog Pond Dam is classified as significant hazard in New Hampshire. It was completed in 1916 and is 110 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 15 ft (taller than 47.8% in NH) |
| Dam Length | 190 ft |
| Dam Type | Earth |
| Max Storage | 16 acre-ft |
| Normal Storage | 4 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 123 cfs |
| Year Completed | 1916 (110 years old) |
| Year Modified | 2008 |
| NID ID | NH00911 |
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
WILTON CONSERVATION COMMISSION
Local Government
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Significant Hazard 9 ftFrequently Asked Questions
What is the hazard classification of Frog Pond Dam?
Frog 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 Frog Pond Dam?
Frog Pond Dam is owned by WILTON CONSERVATION COMMISSION (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Frog Pond Dam built?
Frog Pond Dam was completed in 1916, making it 110 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 Frog Pond Dam?
Frog 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 Frog Pond Dam?
Frog Pond Dam has a dam height of 15 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 Frog Pond Dam last inspected?
Frog Pond Dam was last inspected on November 3, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.