Lyman Mill Pond Dam
Key Takeaway
Lyman Mill Pond Dam is classified as significant hazard in Massachusetts. It was completed in 1900 and is 126 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 14 ft (taller than 45.2% in MA) |
| Dam Length | 90 ft |
| Dam Type | Rockfill |
| Max Storage | 36 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 27 sq mi |
| Year Completed | 1900 (126 years old) |
| NID ID | MA00500 |
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
GLENN R. WEST
Private
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Significant Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Lyman Mill Pond Dam?
Lyman Mill Pond 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 Lyman Mill Pond Dam?
Lyman Mill Pond Dam is owned by GLENN R. WEST (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lyman Mill Pond Dam built?
Lyman Mill Pond Dam was completed in 1900, making it 126 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 Lyman Mill Pond Dam?
Lyman Mill Pond Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lyman Mill Pond Dam?
Lyman Mill Pond Dam has a dam height of 14 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 Lyman Mill Pond Dam last inspected?
Lyman Mill Pond Dam was last inspected on December 7, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.