São Francisco River
The São Francisco River (Portuguese: Rio São Francisco, pronounced [ˈʁiu sɐ̃w fɾɐ̃ˈsisku]), known in English as the San Francisco River, is a large river in Brazil. With a length of 2,914 kilometres (1,811 mi), it is the longest river that runs entirely in Brazilian territory, and the fourth longest in South America and overall in Brazil (after the Amazon, the Paraná and the Madeira).