Marcy Reservoir #11 Dam
Key Takeaway
Marcy Reservoir #11 Dam is classified as high hazard in New York. It was completed in 1915 and is 111 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 | 44 ft (taller than 90.2% in NY) |
| Dam Length | 1,040 ft |
| Dam Type | Earth |
| Max Storage | 64 acre-ft |
| Normal Storage | 35 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1915 (111 years old) |
| NID ID | NY00193 |
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
MOHAWK VALLEY WATER AUTHORITY
Local Government
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Significant Hazard 55 ftFrequently Asked Questions
What is the hazard classification of Marcy Reservoir #11 Dam?
Marcy Reservoir #11 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 Marcy Reservoir #11 Dam?
Marcy Reservoir #11 Dam is owned by MOHAWK VALLEY WATER AUTHORITY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Marcy Reservoir #11 Dam built?
Marcy Reservoir #11 Dam was completed in 1915, making it 111 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 Marcy Reservoir #11 Dam?
Marcy Reservoir #11 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 Marcy Reservoir #11 Dam?
Marcy Reservoir #11 Dam has a dam height of 44 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 Marcy Reservoir #11 Dam last inspected?
Marcy Reservoir #11 Dam was last inspected on August 19, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.