Passumpsic is a concrete dam located in Caledonia County, Vermont, built in 1929. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 11 ft11 ft tall and 258 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Passumpsic
The primary purpose of Passumpsic is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Green Mountain Power Corporation (public utility). It impounds the Passumpsic River near East Barnet.
The dam stands 11 feet tall and stretches 258 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 70 acre-feet, and collects water from a drainage area of 424 square miles. Completed in 1929, the structure is well-established, with more than 75 years of service.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/16/2022.
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Location
| State | Vermont |
| County | Caledonia |
| Nearest City | East Barnet |
| River/Stream | Passumpsic River |
| Coordinates | 44.37460, -72.02640 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 258 ft |
| Year Completed | 1929 (97 years old) |
Storage & Hydraulics
| NID Storage | 70 acre-ft |
| Max Storage | 70 acre-ft |
| Normal Storage | 70 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 424 sq mi |
| Max Discharge | 21,400 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Green Mountain Power Corporation |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/16/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | VT00195 |
| Federal ID | VT00195 |
| More Info | State Dam Safety Program |