| Specimen ID | 116490 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | WI |
| County | La Crosse |
| Locality | Mississippi River (R.M. 707.6) Pool 7, just north of Onalaska, Wisconsin |
| Mapping Accuracy | Accurate |
| HUC8 Name | La Crosse-Pine |
| HUC8 Number | 07040006 |
| HUC10 Name | Halfway Creek-Mississippi River |
| HUC10 Number | 0704000601 |
| HUC12 Name | Lake Onalaska-Mississippi River |
| HUC12 Number | 070400060103 |
| Map | |
| Collection Day | 30 |
| Collection Month | 9 |
| Collection Year | 1992 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Comments | One zebra mussel was attached to a pimpleback (Quadula pustulosa). The other four zebra mussels were each attached to a threeridge (Amblema plicata). |
| Record Type | Personal communication |
| Disposal | ethanol |
| Museum Cat Number | USACOE St. Paul, MN |
| Verifier | Tim Peterson, US Army COE, St. Paul Dist., St. Pau |
| Freshwater/Marine | Freshwater |
| Number Collected | 5 |
| Year Class | adult |
| Size | 13 - 18 mm |
