Manchester Pond Reservoir South Dike
Manchester Pond Reservoir South Dike is an earth dam located in Bristol County, Massachusetts, built in 1963. It carries a High hazard potential classification and has a poor condition assessment.
About Manchester Pond Reservoir South Dike
The primary purpose of Manchester Pond Reservoir South Dike is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Attleboro (local government). It impounds the Fourmile Brook near Attleboro.
The dam stands 16 feet tall and stretches 915 feet across, creates a reservoir covering 245 acres, has a maximum storage capacity of 4,210 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1963, the structure is well into its service life at over 50 years old.
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 12/09/2022.
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 | Bristol |
| Nearest City | Attleboro |
| River/Stream | Fourmile Brook |
| Coordinates | 41.94029, -71.31736 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Length | 915 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 4,210 acre-ft |
| Max Storage | 4,210 acre-ft |
| Normal Storage | 3,000 acre-ft |
| Surface Area | 245 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Attleboro |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 12/09/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA01288 |
| Federal ID | MA00860S001 |
| More Info | State Dam Safety Program |