| Specimen ID | 116221 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | IL |
| County | Grundy |
| Locality | Illinois River (Confluence of Kankakee R. and Des Plaines R. - Kankakee R.M. 273.3) |
| Mapping Accuracy | Accurate |
| HUC8 Name | Des Plaines |
| HUC8 Number | 07120004 |
| HUC10 Name | Des Plaines River |
| HUC10 Number | 0712000409 |
| HUC12 Name | Des Plaines River |
| HUC12 Number | 071200040905 |
| Map | |
| Collection Day | 26 |
| Collection Month | 8 |
| Collection Year | 1991 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Comments | Using samplers, 2/sq.m. (PVC-top only) of post-larval ZM's and 44 post-veliger/sq.m. (on glass) at 1.6 m water depth. At 0.8 m 33/sq.m. post-veligers. |
| Record Type | Personal communication |
| Freshwater/Marine | Freshwater |
| Number Collected | few |
| Year Class | juvenile |
| Size | < 3 mm |
