Souhegan Site 8 Cemetery Dike
Souhegan Site 8 Cemetery Dike is an earth dam located in Hillsborough, New Hampshire, built in 1977. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Souhegan Site 8 Cemetery Dike
The primary purpose of Souhegan Site 8 Cemetery Dike is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Nh Des Water Division (state). It impounds the Tr Souhegan River near Lyndeborough.
The dam stands 16 feet tall and stretches 375 feet across, creates a reservoir covering 48 acres, has a maximum storage capacity of 307 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1977, the structure is 49 years 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 04/24/2020.
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Location
| State | New Hampshire |
| County | Hillsborough |
| Nearest City | Lyndeborough |
| River/Stream | Tr Souhegan River |
| Coordinates | 42.88264, -71.76597 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 375 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 307 acre-ft |
| Max Storage | 307 acre-ft |
| Normal Storage | 253 acre-ft |
| Surface Area | 48 acres |
| Drainage Area | 4 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | NH DES WATER DIVISION |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/24/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH01073 |
| Federal ID | NH01073 |
| More Info | State Dam Safety Program |