New Pond Dam is an earth dam located in Bristol County, Massachusetts, built in 1810. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 16 ft16 ft tall and 860 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 New Pond Dam
The primary purpose of New 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 Easton (local government). It impounds the U/s: Poquoanticut Brook; D/s: Mulberry Brook near Easton.
The dam stands 16 feet tall and stretches 860 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 343 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1810, the structure is one of the older dams in the region, with over a century and a half of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 11/17/2022.
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Location
| State | Massachusetts |
| County | Bristol |
| Nearest City | Easton |
| River/Stream | U/s: Poquoanticut Brook; D/s: Mulberry Brook |
| Coordinates | 42.02428, -71.13714 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Length | 860 ft |
| Year Completed | 1810 (216 years old) |
Storage & Hydraulics
| NID Storage | 343 acre-ft |
| Max Storage | 343 acre-ft |
| Normal Storage | 119 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 720 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Easton |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 11/17/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00779 |
| Federal ID | MA00779 |
| More Info | State Dam Safety Program |