| Specimen ID | 1680237 |
| Group | Fishes |
| Genus | Esox |
| Species | masquinongy |
| Common Name | Muskellunge |
| State | IL |
| County | Cook |
| Locality | Calumet River |
| Mapping Accuracy | Accurate |
| HUC8 Name | Little Calumet-Galien |
| HUC8 Number | 04040001 |
| HUC10 Name | Calumet River-Frontal Lake Michigan |
| HUC10 Number | 0404000106 |
| HUC12 Name | Calumet River-Frontal Lake Michigan |
| HUC12 Number | 040400010606 |
| Map | |
| Collection Day | 20 |
| Collection Month | 5 |
| Collection Year | 2021 |
| Year Accuracy | Actual |
| Potential Pathway | dispersed |
| Status | established |
| Comments | Barcode: 2021052710293960 |
| Record Type | Personal communication |
| Verifier | Illinois Aquatic Nuisance Species Program |
| Freshwater/Marine | Freshwater |
| Number Collected | 2 |
