Waste House No 1
Key Takeaway
Waste House No 1 is classified as high hazard in Pennsylvania. It was completed in 1884 and is 142 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 | 57 ft (taller than 87.8% in PA) |
| Dam Length | 410 ft |
| Dam Type | Earth |
| Max Storage | 244 acre-ft |
| Normal Storage | 176 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1884 (142 years old) |
| NID ID | PA00683 |
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
MAHANOY TOWNSHIP AUTHORITY
Local Government
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What is the hazard classification of Waste House No 1?
Waste House No 1 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 Waste House No 1?
Waste House No 1 is owned by MAHANOY TOWNSHIP AUTHORITY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Waste House No 1 built?
Waste House No 1 was completed in 1884, making it 142 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 Waste House No 1?
Waste House No 1 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 Waste House No 1?
Waste House No 1 has a dam height of 57 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 Waste House No 1 last inspected?
Waste House No 1 was last inspected on November 3, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.