Lanpher
Key Takeaway
Lanpher is classified as high hazard in Pennsylvania. It was completed in 1915 and is 111 years old. Its primary use is water supply. 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 | 38 ft (taller than 75.2% in PA) |
| Dam Length | 3,425 ft |
| Dam Type | Earth |
| Max Storage | 470 acre-ft |
| Normal Storage | 470 acre-ft |
| Surface Area | 16 acres |
| Year Completed | 1915 (111 years old) |
| NID ID | PA01980 |
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
PITTSBURGH WATER AND SEWER AUTHORITY
Local Government
Nearby Dams
Allegheny River Lock and Dam 2
Allegheny, PA
Significant HazardPanther Hollow Lake
Allegheny, PA
High HazardCampbells Pond
Allegheny, PA
Significant Hazard 19 ftLaroche College Detention Basin #2
Allegheny, PA
Significant Hazard 17 ftLaroche College Detention Basin #1
Allegheny, PA
Significant Hazard 18 ftDuncan Ave West Flood Control
Allegheny, PA
Significant Hazard 34 ft14-North Impoundment
Allegheny, PA
High Hazard 42 ftPine Creek (North Park Lake)
Allegheny, PA
High Hazard 33 ftFrequently Asked Questions
What is the hazard classification of Lanpher?
Lanpher 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 Lanpher?
Lanpher is owned by PITTSBURGH WATER AND SEWER AUTHORITY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lanpher built?
Lanpher was completed in 1915, making it 111 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 Lanpher?
Lanpher serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lanpher?
Lanpher has a dam height of 38 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 Lanpher last inspected?
Lanpher was last inspected on March 5, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.