South Reservoir Dam
Key Takeaway
South Reservoir Dam is classified as high hazard in Massachusetts. It was completed in 1882 and is 144 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 45 ft (taller than 94.4% in MA) |
| Dam Length | 950 ft |
| Dam Type | Earth |
| Max Storage | 1.6K acre-ft |
| Normal Storage | 1.4K acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1882 (144 years old) |
| NID ID | MA00453 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Town of Winchester, Water Dept
Local Government
Nearby Dams
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Low Hazard 9 ftSpot Pond Dam
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Significant Hazard 18 ftFrequently Asked Questions
What is the hazard classification of South Reservoir Dam?
South Reservoir Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates South Reservoir Dam?
South Reservoir Dam is owned by Town of Winchester, Water Dept (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Reservoir Dam built?
South Reservoir Dam was completed in 1882, making it 144 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of South Reservoir Dam?
South Reservoir Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is South Reservoir Dam?
South Reservoir Dam has a dam height of 45 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was South Reservoir Dam last inspected?
South Reservoir Dam was last inspected on June 26, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.