Mirror Lake Dam
Mirror Lake Dam is an earth dam located in Norfolk County, Massachusetts. It carries a Significant hazard potential classification and has a fair condition assessment.
About Mirror Lake Dam
The primary purpose of Mirror Lake 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 Norfolk (local government). It impounds the Tributary To Stony Brook near Norfolk.
The dam stands 6 feet tall and stretches 170 feet across, creates a reservoir covering 62 acres, has a maximum storage capacity of 180 acre-feet, and collects water from a drainage area of 0 square miles.
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 09/23/2021.
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Location
| State | Massachusetts |
| County | Norfolk |
| Nearest City | Norfolk |
| River/Stream | Tributary To Stony Brook |
| Coordinates | 42.09022, -71.32384 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 6 ft |
| Dam Length | 170 ft |
Storage & Hydraulics
| NID Storage | 180 acre-ft |
| Max Storage | 180 acre-ft |
| Normal Storage | 155 acre-ft |
| Surface Area | 62 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 62 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Norfolk |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 09/23/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MA02553 |
| Federal ID | MA02553 |
| More Info | State Dam Safety Program |