| Specimen ID | 271964 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | MI |
| County | St. Joseph |
| Locality | Portage Lake [S of Portage] |
| Mapping Accuracy | Accurate |
| HUC8 Name | St. Joseph |
| HUC8 Number | 04050001 |
| HUC10 Name | Portage River |
| HUC10 Number | 0405000105 |
| HUC12 Name | Goose Lake Drain-Portage River |
| HUC12 Number | 040500010506 |
| Map | |
| Collection Day | 8 |
| Collection Month | 8 |
| Collection Year | 2010 |
| Year Accuracy | Actual |
| Potential Pathway | shipping ballast water |
| Status | established |
| Record Type | NAS sighting report |
| Freshwater/Marine | Freshwater |
| Number Collected | 6 |
| Year Class | adult |
| Photo | |
