Tower Hill Pond Dam
Key Takeaway
Tower Hill Pond Dam is classified as high hazard in New Hampshire. It was completed in 1938 and is 88 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 35 ft (taller than 91.1% in NH) |
| Dam Length | 1,220 ft |
| Dam Type | Earth |
| Max Storage | 5.0K acre-ft |
| Normal Storage | 4.0K acre-ft |
| Surface Area | 202 acres |
| Drainage Area | 13 sq mi |
| Max Discharge | 7,884 cfs |
| Year Completed | 1938 (88 years old) |
| NID ID | NH00219 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
MANCHESTER WATER WORKS
Local Government
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High Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Tower Hill Pond Dam?
Tower Hill Pond Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Tower Hill Pond Dam?
Tower Hill Pond Dam is owned by MANCHESTER WATER WORKS (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Tower Hill Pond Dam built?
Tower Hill Pond Dam was completed in 1938, making it 88 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 Tower Hill Pond Dam?
Tower Hill Pond Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Tower Hill Pond Dam?
Tower Hill Pond Dam has a dam height of 35 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 Tower Hill Pond Dam last inspected?
Tower Hill Pond Dam was last inspected on August 8, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.