Pawtuckaway Lake Dollof Dam
Key Takeaway
Pawtuckaway Lake Dollof Dam is classified as high hazard in New Hampshire. It was completed in 1842 and is 184 years old. Its primary use is recreation. 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 | 28 ft (taller than 84.8% in NH) |
| Dam Length | 414 ft |
| Dam Type | Earth |
| Max Storage | 11.7K acre-ft |
| Normal Storage | 11.5K acre-ft |
| Surface Area | 900 acres |
| Drainage Area | 21 sq mi |
| Max Discharge | 3,200 cfs |
| Year Completed | 1842 (184 years old) |
| Year Modified | 1974 |
| NID ID | NH00134 |
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
NH DES WATER DIVISION
State Government
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Low Hazard 8 ftFrequently Asked Questions
What is the hazard classification of Pawtuckaway Lake Dollof Dam?
Pawtuckaway Lake Dollof 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 Pawtuckaway Lake Dollof Dam?
Pawtuckaway Lake Dollof Dam is owned by NH DES WATER DIVISION (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pawtuckaway Lake Dollof Dam built?
Pawtuckaway Lake Dollof Dam was completed in 1842, making it 184 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 Pawtuckaway Lake Dollof Dam?
Pawtuckaway Lake Dollof 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 Pawtuckaway Lake Dollof Dam?
Pawtuckaway Lake Dollof Dam has a dam height of 28 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 Pawtuckaway Lake Dollof Dam last inspected?
Pawtuckaway Lake Dollof Dam was last inspected on August 31, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.