Lyman Run
Key Takeaway
Lyman Run is classified as high hazard in Pennsylvania. It was completed in 2007 and is 19 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 | 53 ft (taller than 86.1% in PA) |
| Dam Length | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 1.4K acre-ft |
| Normal Storage | 476 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 18 sq mi |
| Year Completed | 2007 (19 years old) |
| NID ID | PA01874 |
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
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Lyman Run?
Lyman Run 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 Lyman Run?
Lyman Run is owned by DCNR (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lyman Run built?
Lyman Run was completed in 2007, making it 19 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 Lyman Run?
Lyman Run 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 Lyman Run?
Lyman Run has a dam height of 53 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 Lyman Run last inspected?
Lyman Run was last inspected on October 6, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.