The river is Chile's second-longest river (the longest being Loa River) and Biobío basin is Chile's third largest watershed, after Loa and Baker basins.
Mississippi River | River Thames | Amazon River | Columbia River | Hudson River | Colorado River | Potomac River | river | Ohio River | Missouri River | Delaware River | Murray River | River Tyne | Madeira River | Volga River | River Nene | River Clyde | River Trent | River Severn | Amur River | River Wear | Allegheny River | Red River | Dnieper River | Yarra River | Paraná River | River Tees | Fraser River | Yangtze River | Tocantins River |
It has its origin to the south southeast of Santa Juana, from where it runs to the northeast from among the slopes of the heights of the Nahuelbuta Range and runs to the east to the Bio Bio River in which it empties a little above the confluence with the Laja River.