| Cachapoal River | |
|---|---|
 | |
 | |
| Location | |
| Country | Chile |
| Physical characteristics | |
| Mouth | |
• location | Rapel Lake |
| Length | 250 km (160 mi) |
| Basin size | 6,370 km2 (2,460 sq mi) |
| Discharge | |
| • average | 92.3 m3/s (3,260 cu ft/s) |
Cachapoal River is a tributary river of the Rapel River in Chile located in the Libertador General Bernardo O'Higgins Region. The river gives its name to the Cachapoal Province.