Lyonsdale - Dam No. 2
Key Takeaway
Lyonsdale - Dam No. 2 is classified as low hazard in New York. It was completed in 1935 and is 91 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 9 ft (taller than 9% in NY) |
| Dam Length | 34 ft |
| Dam Type | Concrete |
| Max Storage | 50 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 426 sq mi |
| Year Completed | 1935 (91 years old) |
| NID ID | NY12234 |
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
Lyonsdale Associates, LLC
Private
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Low Hazard 8 ftFrequently Asked Questions
What is the hazard classification of Lyonsdale - Dam No. 2?
Lyonsdale - Dam No. 2 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 Lyonsdale - Dam No. 2?
Lyonsdale - Dam No. 2 is owned by Lyonsdale Associates, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lyonsdale - Dam No. 2 built?
Lyonsdale - Dam No. 2 was completed in 1935, making it 91 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 Lyonsdale - Dam No. 2?
Lyonsdale - Dam No. 2 serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lyonsdale - Dam No. 2?
Lyonsdale - Dam No. 2 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 Lyonsdale - Dam No. 2 last inspected?
Lyonsdale - Dam No. 2 was last inspected on September 19, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.