Millville Lake Dam
Millville Lake Dam is an earth dam located in Rockingham County, New Hampshire, built in 1917. It carries a High hazard potential classification and has a poor condition assessment.
About Millville Lake Dam
The primary purpose of Millville Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town Of Salem (local government). It impounds the Hitty Titty Brook near Salem.
The dam stands 20 feet tall and stretches 484 feet across, creates a reservoir covering 54 acres, has a maximum storage capacity of 650 acre-feet, and collects water from a drainage area of 10 square miles. Completed in 1917, the structure is over a century 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 10/24/2022.
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 | Rockingham |
| Nearest City | Salem |
| River/Stream | Hitty Titty Brook |
| Coordinates | 42.79828, -71.21200 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 484 ft |
| Year Completed | 1917 (109 years old) |
Storage & Hydraulics
| NID Storage | 650 acre-ft |
| Max Storage | 650 acre-ft |
| Normal Storage | 300 acre-ft |
| Surface Area | 54 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 1,880 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | TOWN OF SALEM |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 10/24/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NH00030 |
| Federal ID | NH00030 |
| More Info | State Dam Safety Program |