South Mill Pond Dam
South Mill Pond Dam is an earth dam located in Rockingham County, New Hampshire, built in 1983. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About South Mill Pond Dam
The primary purpose of South Mill Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City Of Portsmouth (local government). It impounds the Tr Atlantic Ocean near Portsmouth.
The dam stands 14 feet tall and stretches 75 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 85 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1983, the structure is 43 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 06/02/2021.
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Location
| State | New Hampshire |
| County | Rockingham |
| Nearest City | Portsmouth |
| River/Stream | Tr Atlantic Ocean |
| Coordinates | 43.07270, -70.75060 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 75 ft |
| Year Completed | 1983 (43 years old) |
Storage & Hydraulics
| NID Storage | 85 acre-ft |
| Max Storage | 85 acre-ft |
| Normal Storage | 18 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,760 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | CITY OF PORTSMOUTH |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/02/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00536 |
| Federal ID | NH00536 |
| More Info | State Dam Safety Program |