Smith Pond Dam
Smith Pond Dam is an earth dam located in Grafton County, New Hampshire, built in 1830. It carries a High hazard potential classification and has a fair condition assessment.
About Smith Pond Dam
The primary purpose of Smith Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Upper Valley Land Trust (private). It impounds the Smith Pond Brook near Enfield.
The dam stands 12 feet tall and stretches 350 feet across, creates a reservoir covering 68 acres, has a maximum storage capacity of 367 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1830, the structure is one of the older dams in the region, with over a century and a half of service.
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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 10/14/2021.
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 | Enfield |
| River/Stream | Smith Pond Brook |
| Coordinates | 43.58970, -72.13770 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 350 ft |
| Year Completed | 1830 (196 years old) |
Storage & Hydraulics
| NID Storage | 367 acre-ft |
| Max Storage | 367 acre-ft |
| Normal Storage | 217 acre-ft |
| Surface Area | 68 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 414 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | UPPER VALLEY LAND TRUST |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 10/14/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NH00073 |
| Federal ID | NH00073 |
| More Info | State Dam Safety Program |