Iowa River
| Iowa River | |
|---|---|
The Iowa River upstream of Marshalltown, Iowa | |
Map showing the Iowa River (to the left) and its tributary the Cedar River | |
| Location | |
| State | Iowa |
| Physical characteristics | |
| Source | confluence of East Branch Iowa River and West Branch Iowa River |
| • location | Belmond |
| • coordinates | 42°51′38″N 93°36′50″W / 42.860524°N 93.6138214°W |
| Mouth | Mississippi River |
• location | near Toolesboro |
• coordinates | 41°9′38″N 91°1′26″W / 41.16056°N 91.02389°W |
| Length | 323 mi (520 km) |
| Discharge | |
| • location | Oakville, Iowa |
| • average | 14,109 cu/ft. per sec. |
| Basin features | |
| River system | Mississippi River |
| Tributaries | |
| • left | Swisher Creek, Cedar River |
| • right | English River |
The Iowa River is a tributary of the Mississippi River in the state of Iowa in the United States. It is about 323 miles (520 km) long and is open to small river craft to Iowa City, about 65 miles (105 km) from its mouth. Its major tributary is the Cedar River.