Plummer Basin East Tailings is an other dam located in Itasca County, Minnesota, built in 1956. It carries a Low hazard potential classification.
Dam profile
NID height · 50 ft50 ft tall, taller than 92% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Plummer Basin East Tailings
The primary purpose of Plummer Basin East Tailings 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 (private). It impounds the Swan River-os near Warba.
The dam stands 50 feet tall, creates a reservoir covering 160 acres, has a maximum storage capacity of 8,000 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1956, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 06/02/2016. That was over 10 years ago.
At 50 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Minnesota |
| County | Itasca |
| Nearest City | Warba |
| River/Stream | Swan River-os |
| Coordinates | 47.29221, -93.34296 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 50 ft |
| Dam Height | 50 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 8,000 acre-ft |
| Max Storage | 8,000 acre-ft |
| Surface Area | 160 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Tailings |
| Owner | Magnetation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/02/2016 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01647 |
| Federal ID | MN01647 |
| More Info | State Dam Safety Program |