Stevens Mill
Stevens Mill is a concrete dam located in Merrimack County, New Hampshire, built in 1930. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Stevens Mill
The primary purpose of Stevens Mill is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Franklin Power, Llc (private). It impounds the Winnipesaukee River near Franklin.
The dam stands 22 feet tall and stretches 112 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 7 acre-feet, and collects water from a drainage area of 488 square miles. Completed in 1930, the structure is well-established, with more than 75 years of service.
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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 09/13/2022.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New Hampshire |
| County | Merrimack |
| Nearest City | Franklin |
| River/Stream | Winnipesaukee River |
| Coordinates | 43.44613, -71.64449 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 112 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 7 acre-ft |
| Max Storage | 7 acre-ft |
| Normal Storage | 7 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 488 sq mi |
| Max Discharge | 2,600 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Franklin Power, LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/13/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH83010 |
| Federal ID | NH83010 |
| More Info | State Dam Safety Program |