Location: Tietê 🌎

The Tietê River (Portuguese, Rio Tietê, Portuguese pronunciation: [tʃi.eˈte]) is a Brazilian river in the state of São Paulo. The name Tietê was registered for the first time on a map published in 1748 by d’Anville. The name signifies “The truthful river”, or “truthful waters” in Tupi.The Tietê River is a historically significant and economically important river, although. The river stretches 450 kilometers and allows for navigation of barges carrying various goods. Pollution of the Tietê River began subtly in the 1920s, but it has worsened significantly over time. In September 2010, National Geographic identified the river as the most polluted in Brazil. Despite efforts to clean up the river, it still suffers from pollution and environmental degradation, and some species are threatened or possibly extinct.