Boston Lot Lake Dam
Key Takeaway
Boston Lot Lake Dam is classified as significant hazard in New Hampshire. It was completed in 1936 and is 90 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 25 ft (taller than 80.2% in NH) |
| Dam Length | 300 ft |
| Dam Type | Earth |
| Max Storage | 696 acre-ft |
| Normal Storage | 488 acre-ft |
| Surface Area | 54 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 564 cfs |
| Year Completed | 1936 (90 years old) |
| Year Modified | 2006 |
| NID ID | NH00620 |
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
CITY OF LEBANON
Local Government
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What is the hazard classification of Boston Lot Lake Dam?
Boston Lot Lake Dam 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 Boston Lot Lake Dam?
Boston Lot Lake Dam is owned by CITY OF LEBANON (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Boston Lot Lake Dam built?
Boston Lot Lake 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 Boston Lot Lake Dam?
Boston Lot 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 Boston Lot Lake Dam?
Boston Lot Lake 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 Boston Lot Lake Dam last inspected?
Boston Lot Lake Dam was last inspected on May 9, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.