Passumpsic
Key Takeaway
Passumpsic is classified as low hazard in Vermont. It was completed in 1929 and is 97 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 11 ft (taller than 17% in VT) |
| Dam Length | 258 ft |
| Dam Type | Concrete |
| Max Storage | 70 acre-ft |
| Normal Storage | 70 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 424 sq mi |
| Max Discharge | 21,400 cfs |
| Year Completed | 1929 (97 years old) |
| NID ID | VT00195 |
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
Green Mountain Power Corporation
Public Utility
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Passumpsic?
Passumpsic 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 Passumpsic?
Passumpsic is owned by Green Mountain Power Corporation (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Passumpsic built?
Passumpsic 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 Passumpsic?
Passumpsic 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 Passumpsic?
Passumpsic has a dam height of 11 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 Passumpsic last inspected?
Passumpsic was last inspected on June 16, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.