| Plum River | |
|---|---|
| Basin features | |
| Main source |
Jo Daviess County southeast of 988 ft (301 m) 42°20′31″N 89°59′39″W / 42.3419444°N 89.9941667°W |
| River mouth |
Confluence with the Mississippi at Savanna, Illinois 584 ft (178 m) 42°05′14″N 90°09′15″W / 42.0872222°N 90.1541667°WCoordinates: 42°05′14″N 90°09′15″W / 42.0872222°N 90.1541667°W |
| Progression | Plum River → Mississippi → Gulf of Mexico |
| Physical characteristics | |
| Length | 47 mi (76 km) |
| GNIS ID | 415959 |
The Plum River is a tributary of the Mississippi River, about 46.6 miles (75.0 km) long, in northwestern Illinois in the United States. It rises in Jo Daviess County and flows generally south-southwestwardly into Carroll County, where it joins the Mississippi at Savanna. Among its several short tributaries are: