Lake Plymouth Dam
Key Takeaway
Lake Plymouth Dam is classified as significant hazard in New Jersey. It was completed in 1951 and is 75 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 46.2% in NJ) |
| Dam Length | 495 ft |
| Dam Type | Earth |
| Max Storage | 99 acre-ft |
| Normal Storage | 62 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 268 cfs |
| Year Completed | 1951 (75 years old) |
| NID ID | NJ00818 |
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
Lake Plymouth Comm. Assoc. Inc.
Private
Nearby Dams
Lake Kathryn Dam
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Low Hazard 15 ftLower Crandon Lake Dam
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Low Hazard 8 ftLong Pine Pond Dam
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Low Hazard 10 ftWillow Crest Dam
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High Hazard 17 ftCrandon Lake Dam
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High Hazard 20 ftTall Pines Farm Dam
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Significant Hazard 23 ftFrequently Asked Questions
What is the hazard classification of Lake Plymouth Dam?
Lake Plymouth 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 Lake Plymouth Dam?
Lake Plymouth Dam is owned by Lake Plymouth Comm. Assoc. Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Plymouth Dam built?
Lake Plymouth Dam was completed in 1951, making it 75 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 Lake Plymouth Dam?
Lake Plymouth 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 Lake Plymouth Dam?
Lake Plymouth 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 Lake Plymouth Dam last inspected?
Lake Plymouth Dam was last inspected on March 27, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.