South Berwick
Key Takeaway
South Berwick is classified as low hazard in New Hampshire. It was completed in 1923 and is 103 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 18 ft (taller than 63.5% in NH) |
| Dam Length | 290 ft |
| Dam Type | Concrete |
| Max Storage | 641 acre-ft |
| Normal Storage | 641 acre-ft |
| Surface Area | 58 acres |
| Drainage Area | 235 sq mi |
| Max Discharge | 14,747 cfs |
| Year Completed | 1923 (103 years old) |
| NID ID | NH00395 |
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
Consolidated Hydro New Hampshire, Inc.
Private
Nearby Dams
South Berwick
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Significant Hazard 9 ftFrequently Asked Questions
What is the hazard classification of South Berwick?
South Berwick 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 South Berwick?
South Berwick is owned by Consolidated Hydro New Hampshire, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Berwick built?
South Berwick was completed in 1923, making it 103 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 South Berwick?
South Berwick serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is South Berwick?
South Berwick has a dam height of 18 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 South Berwick last inspected?
South Berwick was last inspected on June 17, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.