Lake Twotowns Dam
Key Takeaway
Lake Twotowns Dam is classified as low hazard in New Hampshire. It was completed in 1936 and is 90 years old. Its primary use is recreation.
Physical Details
| Dam Height | 25 ft (taller than 80.2% in NH) |
| Dam Length | 700 ft |
| Dam Type | Earth |
| Max Storage | 51 acre-ft |
| Normal Storage | 15 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 55 cfs |
| Year Completed | 1936 (90 years old) |
| Year Modified | 1997 |
| NID ID | NH00172 |
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
NORTH COUNTRY COOS
Private
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Low Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Lake Twotowns Dam?
Lake Twotowns Dam 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 Lake Twotowns Dam?
Lake Twotowns Dam is owned by NORTH COUNTRY COOS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Twotowns Dam built?
Lake Twotowns Dam was completed in 1936, making it 90 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 Lake Twotowns Dam?
Lake Twotowns 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 Lake Twotowns Dam?
Lake Twotowns Dam has a dam height of 25 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 Lake Twotowns Dam last inspected?
Lake Twotowns Dam was last inspected on October 28, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.