Squam Lake
Key Takeaway
Squam Lake is classified as significant hazard in New Hampshire. It was completed in 1856 and is 170 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 17 ft (taller than 59.6% in NH) |
| Dam Length | 200 ft |
| Dam Type | Concrete |
| Max Storage | 39.6K acre-ft |
| Normal Storage | 39.6K acre-ft |
| Surface Area | 7,173 acres |
| Drainage Area | 58 sq mi |
| Max Discharge | 1,470 cfs |
| Year Completed | 1856 (170 years old) |
| NID ID | NH00059 |
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
State Government
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Low Hazard 9 ftFrequently Asked Questions
What is the hazard classification of Squam Lake?
Squam Lake 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 Squam Lake?
Squam Lake is owned by information not available (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Squam Lake built?
Squam Lake was completed in 1856, making it 170 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 Squam Lake?
Squam Lake serves the following purposes: Hydroelectric, Fire Protection, Stock, Or Small Fish Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Squam Lake?
Squam Lake has a dam height of 17 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 Squam Lake last inspected?
Squam Lake was last inspected on September 14, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.