Ellis Brett Pond Dam
Ellis Brett Pond Dam is an earth dam located in Plymouth County, Massachusetts, built in 1930. It carries a High hazard potential classification and has a poor condition assessment.
About Ellis Brett Pond Dam
The primary purpose of Ellis Brett 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 Brockton (local government). It impounds the Salisbury Brook near Brockton.
The dam stands 14 feet tall and stretches 200 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 40 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1930, the structure is well-established, with more than 75 years of service.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. 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 11/14/2022.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Massachusetts dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Massachusetts |
| County | Plymouth |
| Nearest City | Brockton |
| River/Stream | Salisbury Brook |
| Coordinates | 42.09107, -71.04387 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Length | 200 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 40 acre-ft |
| Max Storage | 40 acre-ft |
| Normal Storage | 7 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 605 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Brockton |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 11/14/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA02400 |
| Federal ID | MA02400 |
| More Info | State Dam Safety Program |