| Specimen ID | 117441 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | IL |
| County | Cook |
| Locality | Lake Michigan at Chicago |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lake Michigan |
| HUC8 Number | 04190000 |
| HUC10 Name | Lake Michigan |
| HUC10 Number | 0419000002 |
| HUC12 Name | Lake Michigan |
| HUC12 Number | 041900000200 |
| Map | |
| Collection Day | 22 |
| Collection Month | 6 |
| Collection Year | 1995 |
| Year Accuracy | Actual |
| Potential Pathway | shipping |
| Status | established |
| Comments | Veliger settlement value was 0/m2. |
| Record Type | Personal communication |
| Disposal | ethanol |
| Verifier | AquaTech Environmental, Inc., Clarence, New York |
| Freshwater/Marine | Freshwater |
| Number Collected | 5600/m3 |
| Year Class | veliger |
