Lower Greenwich Dam
Key Takeaway
Lower Greenwich Dam is classified as significant hazard in New York. It was completed in 1925 and is 101 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 7 ft (taller than 0.9% in NY) |
| Dam Length | 255 ft |
| Dam Type | Concrete |
| Max Storage | 3 acre-ft |
| Normal Storage | 2 acre-ft |
| Surface Area | 1 acres |
| Year Completed | 1925 (101 years old) |
| NID ID | NY13698 |
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
Marvin Ferris
Private
Nearby Dams
Middle Greenwich Dam
Washington, NY
Significant Hazard 10 ftUpper Greenwich
Washington, NY
Low Hazard 14 ftMiddle Falls
Washington, NY
Low Hazard 12 ftCenter Falls
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Low Hazard 28 ftClark Mills Upper
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Low Hazard 23 ftClarks Mills Lower
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Low Hazard 20 ftSchuylerville
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High Hazard 43 ftNorthumberland Dam
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Low Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Lower Greenwich Dam?
Lower Greenwich 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 Lower Greenwich Dam?
Lower Greenwich Dam is owned by Marvin Ferris (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lower Greenwich Dam built?
Lower Greenwich Dam was completed in 1925, making it 101 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 Lower Greenwich Dam?
Lower Greenwich Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lower Greenwich Dam?
Lower Greenwich Dam has a dam height of 7 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 Lower Greenwich Dam last inspected?
Lower Greenwich Dam was last inspected on November 5, 1970. Inspection dates indicate when a formal review occurred, not the results of that inspection.