Clark Mills Upper
Key Takeaway
Clark Mills Upper is classified as low hazard in New York. It was completed in 1904 and is 122 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 23 ft (taller than 66% in NY) |
| Dam Length | 469 ft |
| Dam Type | Concrete |
| Max Storage | 875 acre-ft |
| Normal Storage | 875 acre-ft |
| Surface Area | 89 acres |
| Drainage Area | 440 sq mi |
| Max Discharge | 23,350 cfs |
| Year Completed | 1904 (122 years old) |
| NID ID | NY00120 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Hollingsworth & Vose Company
Private
Nearby Dams
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Significant Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Clark Mills Upper?
Clark Mills Upper is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Clark Mills Upper?
Clark Mills Upper is owned by Hollingsworth & Vose Company (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Clark Mills Upper built?
Clark Mills Upper was completed in 1904, making it 122 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 Clark Mills Upper?
Clark Mills Upper serves the following purposes: Hydroelectric, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Clark Mills Upper?
Clark Mills Upper has a dam height of 23 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 Clark Mills Upper last inspected?
Clark Mills Upper was last inspected on July 20, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.