Ilion Reservoir #2 Dam
Key Takeaway
Ilion Reservoir #2 Dam is classified as high hazard in New York. It was completed in 1903 and is 123 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 | 60 ft (taller than 94.6% in NY) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 251 acre-ft |
| Normal Storage | 199 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1903 (123 years old) |
| NID ID | NY00185 |
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
VILLAGE OF ILION
Local Government
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Low Hazard 29 ftFrequently Asked Questions
What is the hazard classification of Ilion Reservoir #2 Dam?
Ilion Reservoir #2 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 Ilion Reservoir #2 Dam?
Ilion Reservoir #2 Dam is owned by VILLAGE OF ILION (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Ilion Reservoir #2 Dam built?
Ilion Reservoir #2 Dam was completed in 1903, making it 123 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 Ilion Reservoir #2 Dam?
Ilion Reservoir #2 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 Ilion Reservoir #2 Dam?
Ilion Reservoir #2 Dam has a dam height of 60 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 Ilion Reservoir #2 Dam last inspected?
Ilion Reservoir #2 Dam was last inspected on September 29, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.