| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 1709618 | WI | Douglas | St. Louis River | 2016 | 04010201 | St. Louis | |
| 1709691 | WI | Douglas | St. Louis River | 2018 | 04010201 | St. Louis | |
| 1709711 | WI | Douglas | St. Louis River | 2018 | 04010201 | St. Louis | |
| 1709760 | WI | Douglas | St. Louis River | 2019 | 04010201 | St. Louis | |
| 1709701 | WI | Douglas | St. Louis River | 2018 | 04010201 | St. Louis | |
| 1709690 | WI | Douglas | St. Louis River | 2018 | 04010201 | St. Louis | |
| 1709793 | WI | Douglas | St. Louis River | 2020 | 04010201 | St. Louis | |
| 1709794 | WI | Douglas | St. Louis River | 2020 | 04010201 | St. Louis | |
| 1709853 | WI | Douglas | St. Louis River | 2020 | 04010201 | St. Louis | |
| 1709621 | WI | Douglas | St. Louis River | 2016 | 04010201 | St. Louis | |
| 1709622 | WI | Douglas | St. Louis River | 2017 | 04010201 | St. Louis | |
| 1709632 | WI | Douglas | St. Louis River | 2017 | 04010201 | St. Louis | |
| 1709635 | WI | Douglas | St. Louis River | 2017 | 04010201 | St. Louis | |
| 1709659 | WI | Douglas | St. Louis River | 2018 | 04010201 | St. Louis | |
| 1709669 | WI | Douglas | St. Louis River | 2018 | 04010201 | St. Louis | |
| 1709702 | WI | Douglas | St. Louis River | 2018 | 04010201 | St. Louis | |
| 1709709 | WI | Douglas | St. Louis River | 2018 | 04010201 | St. Louis | |
| 1709713 | WI | Douglas | St. Louis River | 2018 | 04010201 | St. Louis | |
| 1709714 | WI | Douglas | St. Louis River | 2018 | 04010201 | St. Louis | |
| 1709730 | WI | Douglas | St. Louis River | 2019 | 04010201 | St. Louis | |
| 1709758 | WI | Douglas | St. Louis River | 2019 | 04010201 | St. Louis | |
| 1709759 | WI | Douglas | St. Louis River | 2019 | 04010201 | St. Louis | |
| 1709761 | WI | Douglas | St. Louis River | 2019 | 04010201 | St. Louis | |
| 1709781 | WI | Douglas | St. Louis River | 2019 | 04010201 | St. Louis | |
| 1709845 | WI | Douglas | St. Louis River | 2020 | 04010201 | St. Louis | |
| 1709860 | WI | Douglas | St. Louis River | 2020 | 04010201 | St. Louis | |
| 1710225 | WI | Douglas | St. Louis River | 2015 | 04010201 | St. Louis | |
| 1710229 | WI | Douglas | St. Louis River | 2015 | 04010201 | St. Louis | |
| 1710226 | WI | Douglas | St. Louis River | 2015 | 04010201 | St. Louis | |
| 1710227 | WI | Douglas | St. Louis River | 2015 | 04010201 | St. Louis | |
| 1710230 | WI | Douglas | St. Louis River | 2015 | 04010201 | St. Louis | |
| 1710238 | WI | Douglas | St. Louis River | 2015 | 04010201 | St. Louis | |
Citation for this information:
U.S. Geological Survey, 2025,
Gammarus fasciatus: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 12/20/2025