Guaíba River

estuary, Brazil

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Last updated

June 29, 2026

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The Guaíba River is a shallow estuary located in the state of Rio Grande do Sul, in southern Brazil. It is formed near Porto Alegre by the Jacuí River and several other tributaries. The Guaíba River then empties into the northern end of the Patos Lagoon, which is the largest lagoon in Brazil. This waterway is significant for transportation, with a dredged channel allowing vessels to travel between Rio Grande and Porto Alegre. The waters of the Patos Lagoon, which receives the Guaíba River, are also used for fishing.12

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Jacuí River
…Atlantic coast, it forms the Guaíba River, a shallow estuary emptying into the north end of the Patos Lagoon.
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…Atlantic coast, it forms the Guaíba River, a shallow estuary emptying into the north end of the Patos Lagoon.
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Porto Alegre
…of the rivers forming the Guaíba River are all navigable, the city has become Brazil’s most important centre of inland navigation. Its products can be shipped across the Patos Lagoon and transferred to ocean vessels at Pelotas or Rio Grande. The city’s railroad service is excellent, with connections to Uruguayan…
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…of the rivers forming the Guaíba River are all navigable, the city has become Brazil’s most important centre of inland navigation. Its products can be shipped across the Patos Lagoon and transferred to ocean vessels at Pelotas or Rio Grande. The city’s railroad service is excellent, with connections to Uruguayan…
Read More