South Milton
South Milton is a masonry dam located in Strafford County, New Hampshire, built in 1893. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About South Milton
The primary purpose of South Milton 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 Abenaki Timber Corporation (private). It impounds the Salmon Falls River near Sommersworth.
The dam stands 15 feet tall and stretches 160 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 53 acre-feet, and collects water from a drainage area of 250 square miles. Completed in 1893, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected 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 07/26/2018.
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Location
| State | New Hampshire |
| County | Strafford |
| Nearest City | Sommersworth |
| River/Stream | Salmon Falls River |
| Coordinates | 43.40315, -70.98629 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 160 ft |
| Year Completed | 1893 (133 years old) |
Storage & Hydraulics
| NID Storage | 53 acre-ft |
| Max Storage | 53 acre-ft |
| Normal Storage | 53 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 250 sq mi |
| Max Discharge | 10,280 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Abenaki Timber Corporation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/26/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH83049 |
| Federal ID | NH83049 |
| More Info | State Dam Safety Program |