Gage - South Dam is a concrete dam located in Caledonia County, Vermont, built in 1921. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 18 ft18 ft tall and 69 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 Gage - South Dam
The primary purpose of Gage - South Dam 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 Passumpsic.
The dam stands 18 feet tall and stretches 69 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 69 acre-feet, and collects water from a drainage area of 413 square miles. Completed in 1921, the structure is over a century old.
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 06/15/2022.
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Location
| State | Vermont |
| County | Caledonia |
| Nearest City | Passumpsic |
| River/Stream | Passumpsic River |
| Coordinates | 44.39780, -72.02360 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 69 ft |
| Year Completed | 1921 (105 years old) |
Storage & Hydraulics
| NID Storage | 69 acre-ft |
| Max Storage | 69 acre-ft |
| Normal Storage | 69 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 413 sq mi |
| Max Discharge | 5,440 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 | 06/15/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | VT00192 |
| Federal ID | VT00192 |
| More Info | State Dam Safety Program |