Massapoag Lake Dam
Massapoag Lake Dam is an earth dam located in Norfolk County, Massachusetts. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Massapoag Lake Dam
The primary purpose of Massapoag 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 Sharon (local government). It impounds the Massapoag Brook near Sharon.
The dam stands 7 feet tall, creates a reservoir covering 353 acres, has a maximum storage capacity of 6,530 acre-feet, and collects water from a drainage area of 3 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/10/2021.
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Location
| State | Massachusetts |
| County | Norfolk |
| Nearest City | Sharon |
| River/Stream | Massapoag Brook |
| Coordinates | 42.11073, -71.17549 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 7 ft |
Storage & Hydraulics
| NID Storage | 6,530 acre-ft |
| Max Storage | 6,530 acre-ft |
| Normal Storage | 5,235 acre-ft |
| Surface Area | 353 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 95 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Sharon |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/10/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA02475 |
| Federal ID | MA02475 |
| More Info | State Dam Safety Program |