Sucker Brook Diversion is an earth dam located in Addison County, Vermont, built in 1917. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 38 ft38 ft tall and 725 ft long, taller than 84% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Sucker Brook Diversion
The primary purpose of Sucker Brook Diversion 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 Sucker Brook near Lake Dunmore.
The dam stands 38 feet tall and stretches 725 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 1 acre-feet, and collects water from a drainage area of 10 square miles. Completed in 1917, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 06/08/2022.
At 38 feet, this dam is taller than 84% of dams nationwide.
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Location
| State | Vermont |
| County | Addison |
| Nearest City | Lake Dunmore |
| River/Stream | Sucker Brook |
| Coordinates | 43.90230, -73.04180 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 725 ft |
| Year Completed | 1917 (109 years old) |
Storage & Hydraulics
| NID Storage | 1 acre-ft |
| Max Storage | 1 acre-ft |
| Normal Storage | 1 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 4,180 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Green Mountain Power Corporation |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/08/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | VT00212 |
| Federal ID | VT00212 |
| More Info | State Dam Safety Program |