Lac Marie Dam
Lac Marie Dam is an earth dam located in Worcester County, Massachusetts. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lac Marie Dam
The primary purpose of Lac Marie Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Cistercian Abbey Of Spencer, Inc. (private). It impounds the Seven Mile River near Spencer.
The dam stands 13 feet tall and stretches 120 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 42 acre-feet, and collects water from a drainage area of 6 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 03/29/2022.
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Location
| State | Massachusetts |
| County | Worcester |
| Nearest City | Spencer |
| River/Stream | Seven Mile River |
| Coordinates | 42.29180, -72.00114 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Length | 120 ft |
Storage & Hydraulics
| NID Storage | 42 acre-ft |
| Max Storage | 42 acre-ft |
| Normal Storage | 14 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 790 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Cistercian Abbey of Spencer, Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/29/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA01997 |
| Federal ID | MA01997 |
| More Info | State Dam Safety Program |