Rollinsford
Key Takeaway
Rollinsford is classified as significant hazard in New Hampshire. It was completed in 1910 and is 116 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 20 ft (taller than 70.9% in NH) |
| Dam Length | 385 ft |
| Dam Type | Concrete |
| Max Storage | 456 acre-ft |
| Normal Storage | 456 acre-ft |
| Surface Area | 57 acres |
| Drainage Area | 230 sq mi |
| Max Discharge | 7,000 cfs |
| Year Completed | 1910 (116 years old) |
| NID ID | NH00396 |
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 Rollinsford, NH
Local Government
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Low Hazard 13 ftFrequently Asked Questions
What is the hazard classification of Rollinsford?
Rollinsford 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 Rollinsford?
Rollinsford is owned by Town of Rollinsford, NH (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Rollinsford built?
Rollinsford was completed in 1910, making it 116 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 Rollinsford?
Rollinsford serves the following purposes: Hydroelectric, Fire Protection, Stock, Or Small Fish Pond, Fish And Wildlife Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Rollinsford?
Rollinsford has a dam height of 20 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 Rollinsford last inspected?
Rollinsford was last inspected on May 19, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.