Theresa
Key Takeaway
Theresa is classified as low hazard in New York. It was completed in 1929 and is 97 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 40 ft (taller than 88.1% in NY) |
| Dam Length | 127 ft |
| Dam Type | Gravity |
| Max Storage | 482 acre-ft |
| Normal Storage | 482 acre-ft |
| Surface Area | 75 acres |
| Drainage Area | 323 sq mi |
| Max Discharge | 2,300 cfs |
| Year Completed | 1929 (97 years old) |
| NID ID | NY00407 |
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
Niagara Mohawk Power Corp.
Private
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Low Hazard 7 ftFrequently Asked Questions
What is the hazard classification of Theresa?
Theresa 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 Theresa?
Theresa is owned by Niagara Mohawk Power Corp. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Theresa built?
Theresa was completed in 1929, making it 97 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 Theresa?
Theresa serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Theresa?
Theresa has a dam height of 40 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 Theresa last inspected?
Theresa was last inspected on June 15, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.