Vernon
Vernon is a concrete dam located in Cheshire County, New Hampshire, built in 1909. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Vernon
The primary purpose of Vernon 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 Great River Hydro, Llc (private). It impounds the Connecticut River near Vernon, Vt.
The dam stands 58 feet tall and stretches 956 feet across, creates a reservoir covering 2,550 acres, has a maximum storage capacity of 54,000 acre-feet, and collects water from a drainage area of 6,266 square miles. Completed in 1909, 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 06/09/2022.
At 58 feet, this dam is taller than 95% of all dams in the United States.
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Location
| State | New Hampshire |
| County | Cheshire |
| Nearest City | Vernon, Vt |
| River/Stream | Connecticut River |
| Coordinates | 42.77170, -72.51200 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 58 ft |
| Dam Height | 58 ft |
| Dam Length | 956 ft |
| Year Completed | 1909 (117 years old) |
Storage & Hydraulics
| NID Storage | 54,000 acre-ft |
| Max Storage | 54,000 acre-ft |
| Normal Storage | 18,300 acre-ft |
| Surface Area | 2,550 acres |
| Drainage Area | 6,266 sq mi |
| Max Discharge | 224,700 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Great River Hydro, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/09/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00097 |
| Federal ID | NH00097 |
| More Info | State Dam Safety Program |