| Specimen ID | 116394 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | IL |
| County | Cook |
| Locality | Lake Michigan, near Northbrook, IL, water plant's intake pipes and suction wells |
| Mapping Accuracy | Accurate |
| HUC8 Name | Pike-Root |
| HUC8 Number | 04040002 |
| HUC10 Name | Waukegan River-Frontal Lake Michigan |
| HUC10 Number | 0404000205 |
| HUC12 Name | Diversey Harbor-Frontal Lake Michigan |
| HUC12 Number | 040400020501 |
| Map | |
| Collection Month | 10 |
| Collection Year | 1991 |
| Year Accuracy | Actual |
| Potential Pathway | shipping |
| Status | established |
| Record Type | Personal communication |
| Freshwater/Marine | Freshwater |
| Number Collected | 3/sq.ft. |
