| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 1702149 | ON | | Lake Huron | 2000 | 04240002 | Lake Huron | established |
| 1702150 | MI | Macomb | Lake St. Clair | 2000 | 04090002 | Lake St. Clair | established |
| 1702146 | | | Nipigon River, Nipigon, ON, Canada | 2000 | 04160003 | Nipigon River | established |
| 1702147 | MI | Keweenaw | Lake Superior, MI | 2000 | 04180000 | Lake Superior | established |
| 1702148 | WI | Ozaukee | Lake Michigan | 2000 | 04190000 | Lake Michigan | established |
| 793617 | WI | Florence | Keyes Lake | 2000 | 04030108 | Menominee | established |
| 793618 | WI | Florence | Keyes Lake | 2000 | 04030108 | Menominee | established |
| 793619 | WI | Florence | Keyes Lake | 2000 | 04030108 | Menominee | established |
| 793620 | WI | Florence | Keyes Lake | 2000 | 04030108 | Menominee | established |
| 793621 | WI | Florence | Keyes Lake | 2000 | 04030108 | Menominee | established |
| 793622 | WI | Florence | Keyes Lake | 2000 | 04030108 | Menominee | established |
| 793623 | WI | Florence | Keyes Lake | 2000 | 04030108 | Menominee | established |
| 793624 | WI | Florence | Keyes Lake | 2000 | 04030108 | Menominee | established |
| 1422630 | WI | Vilas | Anderson Lake | 2000 | 04020102 | Ontonagon | established |
| 1424331 | WI | Florence | Keyes Lake | 2000 | 04030108 | Menominee | established |
Citation for this information:
U.S. Geological Survey, 2026,
Osmerus mordax: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 6/4/2026