Sinos River
Rio dos Sinos is a river in the state of Rio Grande do Sul, southern Brazil. It rises in the hills east of Caraá (130 kilometres (81 mi) away from Porto Alegre) at elevations above 600 metres (2,000 ft) and covers a distance of about 190 kilometres (120 mi), flowing into the delta Jacuí in Canoas, at an elevation of only 5 metres (16 ft).
The river basin contains the São Francisco de Paula National Forest, a 1,616-hectare (3,990-acre) sustainable use conservation area created in 1968.