Patterson
Key Takeaway
Patterson is classified as low hazard in Pennsylvania. It was completed in 1825 and is 201 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 14 ft (taller than 23.9% in PA) |
| Dam Length | 700 ft |
| Dam Type | Timber Crib |
| Max Storage | 380 acre-ft |
| Normal Storage | 380 acre-ft |
| Surface Area | 72 acres |
| Drainage Area | 1,981 sq mi |
| Max Discharge | 60,000 cfs |
| Year Completed | 1825 (201 years old) |
| NID ID | PA01790 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Beaver Valley Power Company, LLC
Private
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Significant Hazard 32 ftFrequently Asked Questions
What is the hazard classification of Patterson?
Patterson is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Patterson?
Patterson is owned by Beaver Valley Power Company, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Patterson built?
Patterson was completed in 1825, making it 201 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 Patterson?
Patterson serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Patterson?
Patterson has a dam height of 14 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 Patterson last inspected?
Patterson was last inspected on August 8, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.