Kishwaukee River
| Kishwaukee River | |
|---|---|
Kishwaukee River at Kishwaukee River State Fish and Wildlife Area, spring 2025 | |
| Location | |
| Country | United States |
| Physical characteristics | |
| Source | |
| • location | Cropsey Moraine, south of Woodstock, Illinois |
| • coordinates | 42°17′45″N 88°26′52″W / 42.29583°N 88.44778°W |
| Mouth | |
• location | Rock River west of New Milford, Illinois |
• coordinates | 42°11′10″N 89°07′52″W / 42.18611°N 89.13111°W |
• elevation | 682 ft (208 m) |
| Length | 63.4 mi (102.0 km) |
| Basin size | 1257 sq mi |
| Discharge | |
| • location | mouth |
| • average | 1,076.77 cu ft/s (30.491 m3/s) (estimate) |
The Kishwaukee River, locally known as simply The Kish, is a 63.4-mile-long (102.0 km) river in the U.S. state of Illinois. It is a tributary of the Rock River and its name derives from the Potawatomi word for "river of the sycamore".