Upper Mystic Lake Dam
Key Takeaway
Upper Mystic Lake Dam is classified as significant hazard in Massachusetts. It was completed in 2009 and is 17 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 16 ft (taller than 56.3% in MA) |
| Dam Length | 550 ft |
| Dam Type | Earth |
| Max Storage | 2.8K acre-ft |
| Normal Storage | 1.3K acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 28 sq mi |
| Year Completed | 2009 (17 years old) |
| NID ID | MA00769 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
DCR - DEPT. OF CONSERVATION & RECREATION
State Government
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High Hazard 27 ftFrequently Asked Questions
What is the hazard classification of Upper Mystic Lake Dam?
Upper Mystic Lake Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Upper Mystic Lake Dam?
Upper Mystic Lake Dam is owned by DCR - DEPT. OF CONSERVATION & RECREATION (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Mystic Lake Dam built?
Upper Mystic Lake Dam was completed in 2009, making it 17 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 Upper Mystic Lake Dam?
Upper Mystic Lake Dam serves the following purposes: Flood Risk Reduction, Fish And Wildlife Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Upper Mystic Lake Dam?
Upper Mystic Lake Dam has a dam height of 16 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 Upper Mystic Lake Dam last inspected?
Upper Mystic Lake Dam was last inspected on March 1, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.