Trinity Dam
Key Takeaway
Trinity 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 | 50 ft (taller than 91.9% in NY) |
| Dam Length | 300 ft |
| Dam Type | Earth |
| Max Storage | 3.7K acre-ft |
| Normal Storage | 2.6K acre-ft |
| Surface Area | 110 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,600 cfs |
| Year Completed | 1966 (60 years old) |
| NID ID | NY00129 |
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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Significant Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Trinity Dam?
Trinity 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 Trinity Dam?
Trinity 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 Trinity Dam built?
Trinity 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 Trinity Dam?
Trinity 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 Trinity Dam?
Trinity Dam has a dam height of 50 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 Trinity Dam last inspected?
Trinity Dam was last inspected on April 25, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.