Lower Millpond Dam
Key Takeaway
Lower Millpond Dam is classified as significant hazard in Connecticut. 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 54.3% in CT) |
| Dam Length | 160 ft |
| Dam Type | Masonry |
| Max Storage | 45 acre-ft |
| Normal Storage | 31 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 9 sq mi |
| Year Modified | 1997 |
| NID ID | CT01190 |
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 Old Lyme
Local Government
Nearby Dams
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High Hazard 15 ftTurnpike Pond Dam
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Significant Hazard 9 ftBeaver Brook Pond
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Significant Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Lower Millpond Dam?
Lower Millpond 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 Lower Millpond Dam?
Lower Millpond Dam is owned by Town of Old Lyme (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of Lower Millpond Dam?
Lower Millpond 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 Lower Millpond Dam?
Lower Millpond 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 Lower Millpond Dam last inspected?
Lower Millpond Dam was last inspected on October 22, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.