| Specimen ID | 154181 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | IL |
| County | Pike |
| Locality | Mississippi River (R.M. 277.8), Cash Island, at toe, Pool 24 |
| Mapping Accuracy | Accurate |
| HUC8 Name | The Sny |
| HUC8 Number | 07110004 |
| HUC10 Name | North Fritz Island-Mississippi River |
| HUC10 Number | 0711000407 |
| HUC12 Name | Calumet Creek-Mississippi River |
| HUC12 Number | 071100040703 |
| Map | |
| Collection Day | 12 |
| Collection Month | 10 |
| Collection Year | 1999 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Comments | Received from: H. Dunn, Ecological Specialists, Inc. |
| Record Type | Specimen |
| Disposal | Illinois Natural History Survey |
| Museum Cat Number | INHS 25599 |
| Verifier | K. S. Cummings |
| Freshwater/Marine | Freshwater |
| Number Collected | 5 |
