Long Marsh Dam
Key Takeaway
Long Marsh Dam is classified as low hazard in New York. It was completed in 1964 and is 62 years old. Its primary use is other.
Physical Details
| Dam Height | 11 ft (taller than 19.5% in NY) |
| Dam Length | 322 ft |
| Dam Type | Earth |
| Max Storage | 162 acre-ft |
| Normal Storage | 84 acre-ft |
| Surface Area | 65 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 328 cfs |
| Year Completed | 1964 (62 years old) |
| NID ID | NY00380 |
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
U.S. FISH AND WILDLIFE
Federal Government
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Low Hazard 8 ftFrequently Asked Questions
What is the hazard classification of Long Marsh Dam?
Long 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 Long Marsh Dam?
Long Marsh Dam is owned by U.S. FISH AND WILDLIFE (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Long Marsh Dam built?
Long Marsh Dam was completed in 1964, making it 62 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 Long Marsh Dam?
Long Marsh Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Long Marsh Dam?
Long 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 Long Marsh Dam last inspected?
Long Marsh Dam was last inspected on December 31, 1901. Inspection dates indicate when a formal review occurred, not the results of that inspection.