Minntac Tailings
Key Takeaway
Minntac Tailings is classified as low hazard in Minnesota. It was completed in 1978 and is 48 years old. Its primary use is tailings.
Physical Details
| Dam Height | 50 ft (taller than 96.4% in MN) |
| Dam Length | 63,360 ft |
| Dam Type | Earth |
| Max Storage | 143.0K acre-ft |
| Normal Storage | 114.0K acre-ft |
| Drainage Area | 13 sq mi |
| Year Completed | 1978 (48 years old) |
| NID ID | MN00672 |
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
US Steel
Private
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What is the hazard classification of Minntac Tailings?
Minntac Tailings 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 Minntac Tailings?
Minntac Tailings is owned by US Steel (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Minntac Tailings built?
Minntac Tailings was completed in 1978, making it 48 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 Minntac Tailings?
Minntac Tailings serves the following purposes: Tailings. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Minntac Tailings?
Minntac Tailings has a dam height of 50 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 Minntac Tailings last inspected?
Minntac Tailings was last inspected on September 27, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.