Salmon Brook I Dam
Salmon Brook I Dam is a concrete dam located in Hillsborough, New Hampshire, built in 1887. It carries a Low hazard potential classification.
About Salmon Brook I Dam
The primary purpose of Salmon Brook I Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Pennichuck Water Works Inc (private). It impounds the Salmon Brook near Nashua.
The dam stands 17 feet tall and stretches 75 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 179 acre-feet, and collects water from a drainage area of 20 square miles. Completed in 1887, 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. The most recent inspection on record was 11/14/2019.
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Location
| State | New Hampshire |
| County | Hillsborough |
| Nearest City | Nashua |
| River/Stream | Salmon Brook |
| Coordinates | 42.75130, -71.46190 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 75 ft |
| Year Completed | 1887 (139 years old) |
Storage & Hydraulics
| NID Storage | 179 acre-ft |
| Max Storage | 179 acre-ft |
| Normal Storage | 79 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 20 sq mi |
| Max Discharge | 825 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | PENNICHUCK WATER WORKS INC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 11/14/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00332 |
| Federal ID | NH00332 |
| More Info | State Dam Safety Program |