Triphammer Pond Dam is an earth dam located in Plymouth County, Massachusetts, built in 1996. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 11 ft11 ft tall and 500 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Triphammer Pond Dam
The primary purpose of Triphammer Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town of Hingham (local government). It impounds the Accord Brook near Hingham.
The dam stands 11 feet tall and stretches 500 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 75 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1996, the structure is 30 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 10/08/2019.
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Location
| State | Massachusetts |
| County | Plymouth |
| Nearest City | Hingham |
| River/Stream | Accord Brook |
| Coordinates | 42.22389, -70.86659 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Length | 500 ft |
| Year Completed | 1996 (30 years old) |
Storage & Hydraulics
| NID Storage | 75 acre-ft |
| Max Storage | 75 acre-ft |
| Normal Storage | 61 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 5 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Hingham |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 10/08/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MA00298 |
| Federal ID | MA00298 |
| More Info | State Dam Safety Program |