Holman Tailings Basin
Holman Tailings Basin is an earth dam located in Itasca County, Minnesota. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Holman Tailings Basin
The primary purpose of Holman Tailings Basin is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Magnetation Llc (private). It impounds the Trout Creek-tr near Holman.
The dam stands 45 feet tall and stretches 12,232 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 10,000 acre-feet, and collects water from a drainage area of 0 square miles.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 10/01/2021.
At 45 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Minnesota |
| County | Itasca |
| Nearest City | Holman |
| River/Stream | Trout Creek-tr |
| Coordinates | 47.29808, -93.37425 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 12,232 ft |
Storage & Hydraulics
| NID Storage | 10,000 acre-ft |
| Max Storage | 10,000 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Tailings |
| Owner | Magnetation LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/01/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01666 |
| Federal ID | MN01666 |
| More Info | State Dam Safety Program |