Upper Westborough Reservoir Dam
Key Takeaway
Upper Westborough Reservoir Dam is classified as significant hazard in Massachusetts. It was completed in 1887 and is 139 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 15 ft (taller than 48.8% in MA) |
| Dam Length | 300 ft |
| Dam Type | Earth |
| Max Storage | 850 acre-ft |
| Normal Storage | 830 acre-ft |
| Surface Area | 60 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1887 (139 years old) |
| NID ID | MA00940 |
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
TOWN OF WESTBOROUGH, CONSERVATION COMMISSION
Local Government
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Significant Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Upper Westborough Reservoir Dam?
Upper Westborough Reservoir 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 Westborough Reservoir Dam?
Upper Westborough Reservoir Dam is owned by TOWN OF WESTBOROUGH, CONSERVATION COMMISSION (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Westborough Reservoir Dam built?
Upper Westborough Reservoir Dam was completed in 1887, making it 139 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 Westborough Reservoir Dam?
Upper Westborough 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 Upper Westborough Reservoir Dam?
Upper Westborough Reservoir Dam has a dam height of 15 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 Westborough Reservoir Dam last inspected?
Upper Westborough Reservoir Dam was last inspected on October 1, 2013. Inspection dates indicate when a formal review occurred, not the results of that inspection.