Thorndike Pond Dam
Key Takeaway
Thorndike Pond Dam is classified as low hazard in New Hampshire. It was completed in 1915 and is 111 years old. Its primary use is recreation.
Physical Details
| Dam Height | 13 ft (taller than 36.5% in NH) |
| Dam Length | 175 ft |
| Dam Type | Concrete |
| Max Storage | 2.2K acre-ft |
| Normal Storage | 1.5K acre-ft |
| Surface Area | 265 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 853 cfs |
| Year Completed | 1915 (111 years old) |
| Year Modified | 2013 |
| NID ID | NH00408 |
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
THORNDIKE POND CONSERV ASSOC
Private
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High Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Thorndike Pond Dam?
Thorndike Pond 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 Thorndike Pond Dam?
Thorndike Pond Dam is owned by THORNDIKE POND CONSERV ASSOC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Thorndike Pond Dam built?
Thorndike Pond Dam was completed in 1915, making it 111 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 Thorndike Pond Dam?
Thorndike 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 Thorndike Pond Dam?
Thorndike 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 Thorndike Pond Dam last inspected?
Thorndike Pond Dam was last inspected on June 2, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.