Quabbin Winsor Dam
SWIFT RIVER·
Hampshire, Massachusetts·
Built 1939·
Earth·
170 ft tall
Physical Details
| Dam Height | 170 ft (taller than 99.8% in MA) |
| Dam Length | 2,640 ft |
| Dam Type | Earth |
| Max Storage | 1.8M acre-ft |
| Normal Storage | 1.3M acre-ft |
| Surface Area | 25,216 acres |
| Drainage Area | 187 sq mi |
| Year Completed | 1939 (87 years old) |
| NID ID | MA00588 |
Safety Information
High Hazard
Loss of human life is likely if the dam fails
Emergency Action Plan: Yes
Last Inspection: August 4, 2016
State Regulated: Yes
Regulatory Agency: DEPARTMENT OF CONSERVATION AND RECREATION
Ownership
DCR - DEPT. OF CONSERVATION & RECREATION
State Government
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What is the hazard classification of Quabbin Winsor Dam?
Quabbin Winsor Dam is classified as High Hazard. Loss of human life is likely if the dam fails.
Who owns Quabbin Winsor Dam?
Quabbin Winsor Dam is owned by DCR - DEPT. OF CONSERVATION & RECREATION (State Government).
When was Quabbin Winsor Dam last inspected?
Quabbin Winsor Dam was last inspected on August 4, 2016.
When was Quabbin Winsor Dam built?
Quabbin Winsor Dam was completed in 1939, making it 87 years old.
Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.