Blaisdell Lake Dam
Key Takeaway
Blaisdell Lake Dam is classified as low hazard in New Hampshire. It was completed in 1916 and is 110 years old. Its primary use is recreation.
Physical Details
| Dam Height | 9 ft (taller than 10.9% in NH) |
| Dam Length | 150 ft |
| Dam Type | Concrete |
| Max Storage | 600 acre-ft |
| Normal Storage | 425 acre-ft |
| Surface Area | 161 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 134 cfs |
| Year Completed | 1916 (110 years old) |
| NID ID | NH00563 |
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
BLAISDELL LAKE PROTECTIVE ASSOC
Private
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Low Hazard 8 ftFrequently Asked Questions
What is the hazard classification of Blaisdell Lake Dam?
Blaisdell Lake 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 Blaisdell Lake Dam?
Blaisdell Lake Dam is owned by BLAISDELL LAKE PROTECTIVE ASSOC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Blaisdell Lake Dam built?
Blaisdell Lake Dam was completed in 1916, making it 110 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 Blaisdell Lake Dam?
Blaisdell Lake 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 Blaisdell Lake Dam?
Blaisdell Lake Dam has a dam height of 9 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 Blaisdell Lake Dam last inspected?
Blaisdell Lake Dam was last inspected on June 11, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.