Erie Basin 2
Embarrass River-TR·
St. Louis, Minnesota·
Built 1978·
Earth·
250 ft tall
Physical Details
| Dam Height | 250 ft (taller than 99.9% in MN) |
| Dam Length | 20,500 ft |
| Dam Type | Earth |
| Max Storage | 25.0K acre-ft |
| Normal Storage | 6.4K acre-ft |
| Drainage Area | 2 sq mi |
| Max Discharge | 67 cfs |
| Year Completed | 1978 (48 years old) |
| NID ID | MN00664 |
Safety Information
Significant Hazard
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities
Emergency Action Plan: No
Last Inspection: October 5, 2022
State Regulated: Yes
Regulatory Agency: MNDNR EWR
Ownership
Poly Met Mining, Inc.
Private
Nearby Dams
Poly Met Hrf Dam
St. Louis, MN
Significant Hazard 111 ftErie Basin 1
St. Louis, MN
Significant Hazard 200 ftPolymet-Ltv
St. Louis, MN
Significant Hazard 65 ftEast Stephens Settling
St. Louis, MN
Low Hazard 15 ftWest Stephens Settling
St. Louis, MN
Low Hazard 10 ftDonora Settling
St. Louis, MN
Low Hazard 20 ftWhitewater Reservoir Saddle Dam
St. Louis, MN
Significant Hazard 31 ftWhitewater Reservoir
St. Louis, MN
Significant Hazard 35 ftFrequently Asked Questions
What is the hazard classification of Erie Basin 2?
Erie Basin 2 is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Who owns Erie Basin 2?
Erie Basin 2 is owned by Poly Met Mining, Inc. (Private).
When was Erie Basin 2 last inspected?
Erie Basin 2 was last inspected on October 5, 2022.
When was Erie Basin 2 built?
Erie Basin 2 was completed in 1978, making it 48 years old.
Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.