Boulder Lake
Minnesota — St. Louis County — Otter Creek
Location
| State | Minnesota |
| County | St. Louis |
| River | Otter Creek |
| Coordinates | 47.05170, -92.19930 |
Physical Characteristics
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 1,470 ft |
| NID Storage | 30,300 acre-ft |
| Max Storage | 30,300 acre-ft |
| Surface Area | 4,100 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Satisfactory |
| EAP Status | Not Required |
| Last Inspection | July 11, 2018 |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | 1919 |
| Primary Purpose | Hydroelectric |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | Allete, Inc. |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.