| Specimen ID | 271798 |
| Group | Reptiles-Crocodilians |
| Genus | Alligator |
| Species | mississippiensis |
| Common Name | American alligator |
| State | IL |
| County | Cook |
| Locality | South Fork of the South Branch of the Chicago River (Bubbly Creek) near the Racine Avenue pumping station. |
| Mapping Accuracy | Accurate |
| HUC8 Name | Chicago |
| HUC8 Number | 07120003 |
| HUC10 Name | North Branch Chicago River-Chicago Sanitary and Ship Canal |
| HUC10 Number | 0712000301 |
| HUC12 Name | South Branch Chicago River-Chicago Sanitary and Ship Canal |
| HUC12 Number | 071200030107 |
| Map | |
| Collection Year | 2008 |
| Year Accuracy | Actual |
| Potential Pathway | released pet |
| Status | failed |
| Reference 1 |
| Ref. Number: | 19044 |
| Author: | Owen, M. |
| Date: | 2008 |
| Title: | They found a gator in the Chicago River? Believe it. |
| Publisher: | Chicago Tribune |
| Issue: | June 20, 2008 |
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| Comments | Specimen captured. |
| Record Type | Literature |
| Freshwater/Marine | Freshwater |
| Number Collected | 1 |
| Size | 54 in |
