Lake Jean
Key Takeaway
Lake Jean is classified as high hazard in Pennsylvania. It was completed in 1950 and is 76 years old. Its primary use is recreation. 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 | 26 ft (taller than 58.2% in PA) |
| Dam Length | 780 ft |
| Dam Type | Earth |
| Max Storage | 4.0K acre-ft |
| Normal Storage | 1.4K acre-ft |
| Surface Area | 245 acres |
| Drainage Area | 3 sq mi |
| Year Completed | 1950 (76 years old) |
| NID ID | PA00570 |
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
DCNR
State Government
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High Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Lake Jean?
Lake Jean 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 Lake Jean?
Lake Jean is owned by DCNR (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Jean built?
Lake Jean was completed in 1950, making it 76 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 Jean?
Lake Jean 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 Jean?
Lake Jean has a dam height of 26 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 Jean last inspected?
Lake Jean was last inspected on August 4, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.