| Specimen ID | 116198 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | IL |
| County | Cook |
| Locality | Chicago Sanitary and Ship Channel (R.M. 312.6) near Summit, IL |
| Mapping Accuracy | Accurate |
| HUC8 Name | Des Plaines |
| HUC8 Number | 07120004 |
| HUC10 Name | Chicago Sanitary and Ship Canal-Des Plaines River |
| HUC10 Number | 0712000407 |
| HUC12 Name | Maple Lake-Chicago Sanitary and Ship Canal |
| HUC12 Number | 071200040705 |
| Map | |
| Collection Day | 3 |
| Collection Month | 10 |
| Collection Year | 1991 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Comments | Specimens collected alive. |
| Record Type | Specimen |
| Disposal | formalin |
| Museum Cat Number | INHS 13136 |
| Verifier | K. Douglas Blodgett, IL Nat. Hist. Surv., Havana I |
| Freshwater/Marine | Freshwater |
| Number Collected | 6 |
| Year Class | juvenile |
| Size | 3 mm |
