Downsville Dam
Key Takeaway
Downsville Dam is classified as high hazard in New York. It was completed in 1954 and is 72 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 204 ft (taller than 99.8% in NY) |
| Dam Length | 2,400 ft |
| Dam Type | Earth |
| Max Storage | 609.7K acre-ft |
| Normal Storage | 420.3K acre-ft |
| Surface Area | 5,763 acres |
| Drainage Area | 372 sq mi |
| Max Discharge | 200,000 cfs |
| Year Completed | 1954 (72 years old) |
| NID ID | NY00342 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
NYCDEP DAMS WEST OF THE HUDSON RIVER
Local Government
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Low Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Downsville Dam?
Downsville Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Downsville Dam?
Downsville Dam is owned by NYCDEP DAMS WEST OF THE HUDSON RIVER (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Downsville Dam built?
Downsville Dam was completed in 1954, making it 72 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 Downsville Dam?
Downsville Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Downsville Dam?
Downsville Dam has a dam height of 204 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 Downsville Dam last inspected?
Downsville Dam was last inspected on February 3, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.