| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Crawfish River |  | Rock River | 43.0011000000 | -88.8126000000 | Map | ||||||
| Kishwaukee River |  | Rock River | 102,000 | 42.1861111100 | -89.1311111100 | Map | |||||
| Pecatonica River |  | 6,752,999,936 | Rock River | 312,000 | 42.4500158000 | -89.0751095000 | Map | ||||
| Stillman Creek (Illinois) |  | Rock River | 42.1261000000 | -89.2308000000 | Map | ||||||
| Yahara River |  | 1,388,233,600 | Rock River | 70,000 | 42.7931000000 | -89.1229000000 | Map |