Lake John
Key Takeaway
Lake John is classified as significant hazard in Vermont. It was completed in 1900 and is 126 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 27 ft (taller than 72.4% in VT) |
| Dam Length | 240 ft |
| Dam Type | Earth |
| Max Storage | 12 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1900 (126 years old) |
| NID ID | VT00307 |
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
SOUTH ROYALTON FIRE DIST. NO. 1
Local Government
Nearby Dams
Lake Casper
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Significant Hazard 17 ftMcintosh Pond
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Significant Hazard 25 ftTunbridge Trout Pond
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Low Hazard 20 ftKratky
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Significant Hazard 25 ftDay-Bruorton
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Significant Hazard 14 ftBethel Mills
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Low Hazard 17 ftCrescent Lake
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Significant Hazard 16 ftSilver Lake
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High Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Lake John?
Lake John 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 John?
Lake John is owned by SOUTH ROYALTON FIRE DIST. NO. 1 (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake John built?
Lake John 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 Lake John?
Lake John 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 Lake John?
Lake John has a dam height of 27 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 John last inspected?
Lake John was last inspected on June 29, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.