Guaíba is a river located at the start of Lagoa dos Patos. It's formed by a lot of different rivers. Porto Alegre is next to it.
Nowadays people discuss a lot about the definition of Guaíba. In the past we called it river, but some specialists claim that it is a lagoon, because the water flows too slowly to be considered a river. Is it an estuary? Is it a river? Is it a lagoon? What do you think?
Marcelle, Igor and Lauro, Quintino, Porto Alegre