Allegheny River Lock and Dam 6
Key Takeaway
Allegheny River Lock and Dam 6 is classified as low hazard in Pennsylvania. It was completed in 1928 and is 98 years old. Its primary use is navigation.
Physical Details
| Dam Length | 1,212 ft |
| Dam Type | Gravity |
| Max Storage | 14.0K acre-ft |
| Normal Storage | 14.0K acre-ft |
| Surface Area | 1,260 acres |
| Drainage Area | 9,332 sq mi |
| Max Discharge | 120,000 cfs |
| Year Completed | 1928 (98 years old) |
| NID ID | PA00116 |
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
USACE - Pittsburgh District
Federal Government
Nearby Dams
Crooked Creek Dam
Armstrong, PA
High HazardAllegheny River Lock and Dam 5
Armstrong, PA
Low HazardAllegheny River Lock and Dam 7
Armstrong, PA
Low HazardAmbrose Mine
Armstrong, PA
Low Hazard 26 ftNorthmoreland Lake (Pa-117)
Westmoreland, PA
High Hazard 38 ftAllegheny River Lock and Dam 4
Allegheny, PA
Significant HazardFrequently Asked Questions
What is the hazard classification of Allegheny River Lock and Dam 6?
Allegheny River Lock and Dam 6 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 Allegheny River Lock and Dam 6?
Allegheny River Lock and Dam 6 is owned by USACE - Pittsburgh District (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Allegheny River Lock and Dam 6 built?
Allegheny River Lock and Dam 6 was completed in 1928, making it 98 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 Allegheny River Lock and Dam 6?
Allegheny River Lock and Dam 6 serves the following purposes: Navigation, Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Allegheny River Lock and Dam 6 last inspected?
Allegheny River Lock and Dam 6 was last inspected on May 2, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.