Pemigewasset River Levee is an earth dam located in Grafton County, New Hampshire, built in 1960. It carries a High hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 15 ft15 ft tall and 1,882 ft long. 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 Pemigewasset River Levee
The primary purpose of Pemigewasset River Levee is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Town of Lincoln (local government). It impounds the East Branch Pemigewasset River near Lincoln.
The dam stands 15 feet tall and stretches 1,882 feet across, and collects water from a drainage area of 114 square miles. Completed in 1960, 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 07/28/2021.
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 | Lincoln |
| River/Stream | East Branch Pemigewasset River |
| Coordinates | 44.04686, -71.66207 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 1,882 ft |
| Year Completed | 1960 (66 years old) |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Town of Lincoln |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/28/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NH03710 |
| Federal ID | NH03710 |
| More Info | State Dam Safety Program |