Paranapanema River

The Paranapanema River (Portuguese, Rio Paranapanema) is one of the most important rivers of the interior of the Brazilian state of São Paulo. The river forms most of the boundary between the states of São Paulo and Paraná.

From source to mouth the Paranapanema River has an elevation drop of 677 metres (2,221 ft). The river's length is about 929 kilometres (577 mi). It flows generally west, reaching the Paraná River at an altitude of about 233 metres (764 ft).