| View KML View WKT | United States Rivers |
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Rock Creek - South Branch
| States | Illinois |
| Length | 19.8 miles |
| Watershed Length* | 20 miles |
| Mouth | Rock Creek ⤏ Gulf of Mexico |
| GNIS | 418730 |
* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey