Pine Run (Pa-491)
Key Takeaway
Pine Run (Pa-491) is classified as high hazard in Pennsylvania. It was completed in 1970 and is 56 years old. Its primary use is flood risk reduction. 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 | 20 ft (taller than 43.1% in PA) |
| Dam Length | 1,945 ft |
| Dam Type | Earth |
| Max Storage | 652 acre-ft |
| Normal Storage | 18 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 2 sq mi |
| Year Completed | 1970 (56 years old) |
| NID ID | PA00737 |
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
MERCER COUNTY COMMISSIONERS
Local Government
Nearby Dams
Clark Mills (Pa-490)
Mercer, PA
High Hazard 45 ftHadley (Pa-489)
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High Hazard 51 ftLake Latonka
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High Hazard 34 ftStoneboro (Pa-474)
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High Hazard 30 ftLake Wilhelm (Pa-475)
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High Hazard 50 ftCresswell Upper
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Significant Hazard 5 ftCresswell Lower
Mercer, PA
Significant Hazard 15 ftLooney Lake
Mercer, PA
Significant Hazard 40 ftFrequently Asked Questions
What is the hazard classification of Pine Run (Pa-491)?
Pine Run (Pa-491) 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 Pine Run (Pa-491)?
Pine Run (Pa-491) is owned by MERCER COUNTY COMMISSIONERS (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pine Run (Pa-491) built?
Pine Run (Pa-491) was completed in 1970, making it 56 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 Pine Run (Pa-491)?
Pine Run (Pa-491) serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Pine Run (Pa-491)?
Pine Run (Pa-491) has a dam height of 20 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 Pine Run (Pa-491) last inspected?
Pine Run (Pa-491) was last inspected on September 10, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.