Airport Marsh Dam
Key Takeaway
Airport Marsh Dam is classified as low hazard in New Hampshire. It was completed in 1956 and is 70 years old. Its primary use is recreation.
Physical Details
| Dam Height | 11 ft (taller than 23.8% in NH) |
| Dam Length | 300 ft |
| Dam Type | Earth |
| Max Storage | 810 acre-ft |
| Normal Storage | 166 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 14 sq mi |
| Max Discharge | 2,400 cfs |
| Year Completed | 1956 (70 years old) |
| Year Modified | 2009 |
| NID ID | NH00254 |
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
NH FISH AND GAME DEPARTMENT
State Government
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Significant Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Airport Marsh Dam?
Airport Marsh 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 Airport Marsh Dam?
Airport Marsh Dam is owned by NH FISH AND GAME DEPARTMENT (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Airport Marsh Dam built?
Airport Marsh Dam was completed in 1956, making it 70 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 Airport Marsh Dam?
Airport Marsh 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 Airport Marsh Dam?
Airport Marsh Dam has a dam height of 11 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 Airport Marsh Dam last inspected?
Airport Marsh Dam was last inspected on June 21, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.