| Specimen ID | 269723 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | IN |
| County | Lake |
| Locality | Robinson Lake, a 14-acre borrow pit lake just off I-65 [Robinson Park, S side of Gary] |
| Mapping Accuracy | Accurate |
| HUC8 Name | Little Calumet-Galien |
| HUC8 Number | 04040001 |
| HUC10 Name | Deep River-Portage Burns Waterway |
| HUC10 Number | 0404000105 |
| HUC12 Name | City of Merrillville-Turkey Creek |
| HUC12 Number | 040400010505 |
| Map | |
| Collection Day | 3 |
| Collection Month | 4 |
| Collection Year | 2010 |
| Year Accuracy | Actual |
| Potential Pathway | shipping ballast water |
| Status | established |
| Record Type | NAS sighting report |
| Freshwater/Marine | Freshwater |
