Silica Pond Dam
Key Takeaway
Silica Pond 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 | 9 ft (taller than 10.9% in NH) |
| Dam Length | 150 ft |
| Dam Type | Concrete |
| Max Storage | 29 acre-ft |
| Normal Storage | 4 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 675 cfs |
| Year Completed | 1930 (96 years old) |
| NID ID | NH01098 |
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 TROY
Local Government
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Low Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Silica Pond Dam?
Silica 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 Silica Pond Dam?
Silica Pond Dam is owned by TOWN OF TROY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Silica Pond Dam built?
Silica Pond 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 Silica Pond Dam?
Silica 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 Silica Pond Dam?
Silica Pond Dam has a dam height of 9 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 Silica Pond Dam last inspected?
Silica Pond Dam was last inspected on June 3, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.