Milton Leatherboard Dam is a concrete dam located in Strafford County, New Hampshire, built in 1904. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 32 ft32 ft tall and 350 ft long, taller than 74% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Milton Leatherboard Dam
The primary purpose of Milton Leatherboard Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Milton Land Corp (private). It impounds the Salmon Falls River near Milton.
The dam stands 32 feet tall and stretches 350 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 67 acre-feet, and collects water from a drainage area of 116 square miles. Completed in 1904, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. 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 09/26/2022.
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Location
| State | New Hampshire |
| County | Strafford |
| Nearest City | Milton |
| River/Stream | Salmon Falls River |
| Coordinates | 43.40770, -70.98690 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 350 ft |
| Year Completed | 1904 (122 years old) |
Storage & Hydraulics
| NID Storage | 67 acre-ft |
| Max Storage | 67 acre-ft |
| Normal Storage | 60 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 116 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Milton Land Corp |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 09/26/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NH00316 |
| Federal ID | NH00316 |
| More Info | State Dam Safety Program |