Nassau Lake Dam
Key Takeaway
Nassau Lake Dam is classified as significant hazard in New York. It was completed in 1792 and is 234 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 10 ft (taller than 12.4% in NY) |
| Dam Length | 200 ft |
| Dam Type | Earth |
| Max Storage | 550 acre-ft |
| Normal Storage | 380 acre-ft |
| Surface Area | 173 acres |
| Drainage Area | 17 sq mi |
| Max Discharge | 990 cfs |
| Year Completed | 1792 (234 years old) |
| NID ID | NY00620 |
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
NASSAU LAKE PARK IMPROVEMENT ASSOCIATION INC
Private
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What is the hazard classification of Nassau Lake Dam?
Nassau 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 Nassau Lake Dam?
Nassau Lake Dam is owned by NASSAU LAKE PARK IMPROVEMENT ASSOCIATION INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Nassau Lake Dam built?
Nassau Lake Dam was completed in 1792, making it 234 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 Nassau Lake Dam?
Nassau 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 Nassau Lake Dam?
Nassau Lake Dam has a dam height of 10 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 Nassau Lake Dam last inspected?
Nassau Lake Dam was last inspected on January 24, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.