Allegheny Storage
Key Takeaway
Allegheny Storage is classified as high hazard in Pennsylvania. It was completed in 1905 and is 121 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 | 31 ft (taller than 66.7% in PA) |
| Dam Length | 1,500 ft |
| Dam Type | Earth |
| Max Storage | 234 acre-ft |
| Normal Storage | 184 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 6 sq mi |
| Year Completed | 1905 (121 years old) |
| NID ID | PA00526 |
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
ALTOONA WATER AUTHORITY
Local Government
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High Hazard 54 ftFrequently Asked Questions
What is the hazard classification of Allegheny Storage?
Allegheny Storage 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 Allegheny Storage?
Allegheny Storage is owned by ALTOONA WATER AUTHORITY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Allegheny Storage built?
Allegheny Storage was completed in 1905, making it 121 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 Storage?
Allegheny Storage 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 Allegheny Storage?
Allegheny Storage has a dam height of 31 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 Allegheny Storage last inspected?
Allegheny Storage was last inspected on August 12, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.