| Specimen ID | 118236 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | IL |
| County | Ogle |
| Locality | Rock River near Byron, IL at Commonwealth Edison's Byron Nuclear Center |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lower Rock |
| HUC8 Number | 07090005 |
| HUC10 Name | Stillman Creek-Rock River |
| HUC10 Number | 0709000504 |
| HUC12 Name | Lake Louise-Rock River |
| HUC12 Number | 070900050407 |
| Map | |
| Collection Day | 6 |
| Collection Month | 5 |
| Collection Year | 1999 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Record Type | Personal communication |
| Verifier | William Elzinga, Zambrano Engineering |
| Freshwater/Marine | Freshwater |
| Number Collected | 1040/m3 |
| Year Class | veliger |
| Size | 150 microns |
