Hill Annex Dike 3
Key Takeaway
Hill Annex Dike 3 is classified as significant hazard in Minnesota. It was completed in 1954 and is 72 years old. Its primary use is tailings. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 63 ft (taller than 98.2% in MN) |
| Dam Length | 10,700 ft |
| Dam Type | Earth |
| Max Storage | 3.3K acre-ft |
| Normal Storage | 2.1K acre-ft |
| Drainage Area | 0 sq mi |
| Year Completed | 1954 (72 years old) |
| NID ID | MN00785 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Glacial Park Iron Ore Properties
Private
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Low Hazard 40 ftFrequently Asked Questions
What is the hazard classification of Hill Annex Dike 3?
Hill Annex Dike 3 is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Hill Annex Dike 3?
Hill Annex Dike 3 is owned by Glacial Park Iron Ore Properties (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hill Annex Dike 3 built?
Hill Annex Dike 3 was completed in 1954, making it 72 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 Hill Annex Dike 3?
Hill Annex Dike 3 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 Hill Annex Dike 3?
Hill Annex Dike 3 has a dam height of 63 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 Hill Annex Dike 3 last inspected?
Hill Annex Dike 3 was last inspected on July 18, 2012. Inspection dates indicate when a formal review occurred, not the results of that inspection.