Lake Mirimichi Dam
Lake Mirimichi Dam is an earth dam located in Norfolk County, Massachusetts, built in 1925. It carries a Significant hazard potential classification and has a fair condition assessment.
About Lake Mirimichi Dam
The primary purpose of Lake Mirimichi 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 Attleboro (local government). It impounds the Wading River near Foxborough.
The dam stands 11 feet tall and stretches 620 feet across, creates a reservoir covering 154 acres, has a maximum storage capacity of 845 acre-feet, and collects water from a drainage area of 11 square miles. Completed in 1925, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 09/24/2020.
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Location
| State | Massachusetts |
| County | Norfolk |
| Nearest City | Foxborough |
| River/Stream | Wading River |
| Coordinates | 42.02688, -71.28460 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Length | 620 ft |
| Year Completed | 1925 (101 years old) |
Storage & Hydraulics
| NID Storage | 845 acre-ft |
| Max Storage | 845 acre-ft |
| Normal Storage | 460 acre-ft |
| Surface Area | 154 acres |
| Drainage Area | 11 sq mi |
| Max Discharge | 552 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Attleboro |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 09/24/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00168 |
| Federal ID | MA00168 |
| More Info | State Dam Safety Program |