Brockton Reservoir Dam is an earth dam located in Norfolk County, Massachusetts, built in 1885. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 17 ft17 ft tall and 1,800 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 Brockton Reservoir Dam
The primary purpose of Brockton Reservoir Dam 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 Brockton (local government). It impounds the Beaver Brook near Avon.
The dam stands 17 feet tall and stretches 1,800 feet across, creates a reservoir covering 93 acres, has a maximum storage capacity of 1,150 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1885, the structure is over a century old.
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. The most recent inspection on record was 02/28/2017.
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Location
| State | Massachusetts |
| County | Norfolk |
| Nearest City | Avon |
| River/Stream | Beaver Brook |
| Coordinates | 42.11352, -71.05111 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Length | 1,800 ft |
| Year Completed | 1885 (141 years old) |
Storage & Hydraulics
| NID Storage | 1,150 acre-ft |
| Max Storage | 1,150 acre-ft |
| Normal Storage | 890 acre-ft |
| Surface Area | 93 acres |
| Drainage Area | 3 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Brockton |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 02/28/2017 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MA00786 |
| Federal ID | MA00786 |
| More Info | State Dam Safety Program |