Mill River Dam
Key Takeaway
Mill River Dam is classified as high hazard in New York. It was completed in 1966 and is 60 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 | 100 ft (taller than 98.2% in NY) |
| Dam Length | 875 ft |
| Dam Type | Earth |
| Max Storage | 2.6K acre-ft |
| Normal Storage | 2.2K acre-ft |
| Surface Area | 104 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 10,100 cfs |
| Year Completed | 1966 (60 years old) |
| NID ID | NY00128 |
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
AQUARION WATER COMPANY OF CT
Private
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What is the hazard classification of Mill River Dam?
Mill River 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 Mill River Dam?
Mill River Dam is owned by AQUARION WATER COMPANY OF CT (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mill River Dam built?
Mill River Dam was completed in 1966, making it 60 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 River Dam?
Mill River 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 Mill River Dam?
Mill River Dam has a dam height of 100 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 River Dam last inspected?
Mill River Dam was last inspected on April 25, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.