| View KML View WKT | United States Rivers |
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Illinois River
| States | Colorado |
| Length | 71.4 miles |
| Watershed Length* | 115 miles |
| Mouth | Michigan River ⤏ Gulf of Mexico |
| GNIS | 170358 |
Tributaries
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| Name | Distance from Mouth (miles) | Length (miles) | Watershed Length (miles) |
|---|---|---|---|
| Jack Creek | 52 | 20 | 20 |
| Willow Creek | 42 | 24 | 24 |
* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey