Lower Lake
Key Takeaway
Lower Lake is classified as high hazard in Pennsylvania. It was completed in 1959 and is 67 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 | 23 ft (taller than 51% in PA) |
| Dam Length | 340 ft |
| Dam Type | Earth |
| Max Storage | 4.1K acre-ft |
| Normal Storage | 1.1K acre-ft |
| Surface Area | 250 acres |
| Drainage Area | 11 sq mi |
| Year Completed | 1959 (67 years old) |
| NID ID | PA00306 |
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 14 ftFrequently Asked Questions
What is the hazard classification of Lower Lake?
Lower Lake 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 Lower Lake?
Lower Lake is owned by DCNR (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lower Lake built?
Lower Lake was completed in 1959, making it 67 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 Lower Lake?
Lower Lake 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 Lake?
Lower Lake has a dam height of 23 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 Lake last inspected?
Lower Lake was last inspected on January 7, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.