Mill C
Key Takeaway
Mill C is classified as significant hazard in New York. It was completed in 1922 and is 104 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 43 ft (taller than 89.9% in NY) |
| Dam Length | 202 ft |
| Dam Type | Masonry |
| Max Storage | 40 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 567 sq mi |
| Max Discharge | 60,000 cfs |
| Year Completed | 1922 (104 years old) |
| NID ID | NY00235 |
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
New York State Electric & Gas Corporation
Public Utility
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Low Hazard 33 ftFrequently Asked Questions
What is the hazard classification of Mill C?
Mill C 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 Mill C?
Mill C is owned by New York State Electric & Gas Corporation (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mill C built?
Mill C was completed in 1922, making it 104 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 Mill C?
Mill C serves the following purposes: Hydroelectric, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mill C?
Mill C has a dam height of 43 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 Mill C last inspected?
Mill C was last inspected on September 7, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.