Moore
Moore is a concrete dam located in Grafton County, New Hampshire, built in 1957. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Moore
The primary purpose of Moore 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 Barnet, Vt.
The dam stands 149 feet tall and stretches 2,920 feet across, creates a reservoir covering 3,490 acres, has a maximum storage capacity of 223,722 acre-feet, and collects water from a drainage area of 1,600 square miles. Completed in 1957, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. 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 06/07/2022.
At 149 feet, this dam is taller than 99% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The New Hampshire dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New Hampshire |
| County | Grafton |
| Nearest City | Barnet, Vt |
| River/Stream | Connecticut River |
| Coordinates | 44.33520, -71.87600 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 149 ft |
| Dam Height | 149 ft |
| Dam Length | 2,920 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 223,722 acre-ft |
| Max Storage | 223,722 acre-ft |
| Normal Storage | 223,722 acre-ft |
| Surface Area | 3,490 acres |
| Drainage Area | 1,600 sq mi |
| Max Discharge | 211,300 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Great River Hydro, LLC |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/07/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NH00414 |
| Federal ID | NH00414 |
| More Info | State Dam Safety Program |