Grace Mine Tailings
Key Takeaway
Grace Mine Tailings is classified as high hazard in Pennsylvania. It was completed in 1957 and is 69 years old. Its primary use is recreation. 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 | 145 ft (taller than 98.2% in PA) |
| Dam Length | 2,000 ft |
| Dam Type | Earth |
| Max Storage | 1.7K acre-ft |
| Normal Storage | 913 acre-ft |
| Surface Area | 160 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1957 (69 years old) |
| NID ID | PA00715 |
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
MORGANTOWN PROPERTIES
Private
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What is the hazard classification of Grace Mine Tailings?
Grace Mine Tailings 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 Grace Mine Tailings?
Grace Mine Tailings is owned by MORGANTOWN PROPERTIES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Grace Mine Tailings built?
Grace Mine Tailings was completed in 1957, making it 69 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 Grace Mine Tailings?
Grace Mine Tailings serves the following purposes: Recreation, Tailings. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Grace Mine Tailings?
Grace Mine Tailings has a dam height of 145 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 Grace Mine Tailings last inspected?
Grace Mine Tailings was last inspected on September 18, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.