Stony Brook Dam
Key Takeaway
Stony Brook Dam is classified as significant hazard in Massachusetts. It was completed in 1870 and is 156 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 24 ft (taller than 77.7% in MA) |
| Dam Length | 350 ft |
| Dam Type | Earth |
| Max Storage | 120 acre-ft |
| Normal Storage | 61 acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 26 sq mi |
| Year Completed | 1870 (156 years old) |
| NID ID | MA00132 |
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 WESTFORD, BOARD OF SELECTMEN
Local Government
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Significant Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Stony Brook Dam?
Stony Brook 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 Stony Brook Dam?
Stony Brook Dam is owned by TOWN OF WESTFORD, BOARD OF SELECTMEN (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Stony Brook Dam built?
Stony Brook Dam was completed in 1870, making it 156 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 Stony Brook Dam?
Stony Brook 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 Stony Brook Dam?
Stony Brook Dam has a dam height of 24 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 Stony Brook Dam last inspected?
Stony Brook Dam was last inspected on December 28, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.