Old Pond Dam
Old Pond Dam is an earth dam located in Bristol County, Massachusetts, built in 1751. It carries a Significant hazard potential classification and has a poor condition assessment.
About Old Pond Dam
The primary purpose of Old 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 Beaver Brook near Easton.
The dam stands 9 feet tall and stretches 260 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 82 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1751, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. 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 | Beaver Brook |
| Coordinates | 42.02484, -71.13218 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Length | 260 ft |
| Year Completed | 1751 (275 years old) |
Storage & Hydraulics
| NID Storage | 82 acre-ft |
| Max Storage | 82 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 312 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Easton |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/17/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA01082 |
| Federal ID | MA01082 |
| More Info | State Dam Safety Program |