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.

High HazardFair ConditionEmergency Action Plan: Yes

Location

StateNew Hampshire
CountyGrafton
Nearest CityEnfield
River/StreamSmith Pond Brook
Coordinates43.58970, -72.13770

Physical Characteristics

Dam TypeEarth
NID Height12 ft
Dam Height12 ft
Dam Length350 ft
Year Completed1830 (196 years old)

Storage & Hydraulics

NID Storage367 acre-ft
Max Storage367 acre-ft
Normal Storage217 acre-ft
Surface Area68 acres
Drainage Area0 sq mi
Max Discharge414 cfs

Ownership & Safety

PurposeRecreation
OwnerUPPER VALLEY LAND TRUST
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentFair
Last Inspection10/14/2021
Emergency Action PlanYes

Identifiers

NID IDNH00073
Federal IDNH00073
More InfoState Dam Safety Program

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