Lower Root Reservoir
Key Takeaway
Lower Root Reservoir is classified as high hazard in Massachusetts. It was completed in 1891 and is 135 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 | 34 ft (taller than 90% in MA) |
| Dam Length | 770 ft |
| Dam Type | Earth |
| Max Storage | 305 acre-ft |
| Normal Storage | 230 acre-ft |
| Drainage Area | 1 sq mi |
| Year Completed | 1891 (135 years old) |
| NID ID | MA00018 |
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 LENOX, BOARD OF SELECTMEN
Local Government
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Significant Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Lower Root Reservoir?
Lower Root Reservoir 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 Lower Root Reservoir?
Lower Root Reservoir is owned by TOWN OF LENOX, BOARD OF SELECTMEN (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lower Root Reservoir built?
Lower Root Reservoir was completed in 1891, making it 135 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 Lower Root Reservoir?
Lower Root Reservoir 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 Lower Root Reservoir?
Lower Root Reservoir has a dam height of 34 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 Lower Root Reservoir last inspected?
Lower Root Reservoir was last inspected on March 8, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.