List of rivers of Rio Grande do Sul
List of rivers in Rio Grande do Sul (Brazilian State).
The list is arranged by drainage basin from north to south, with respective tributaries indented under each larger stream's name and ordered from downstream to upstream. All rivers in Rio Grande do Sul drain to the Atlantic Ocean.
By Drainage Basin
Atlantic Coast/Lagoa dos Patos
Lagoa dos Patos is connected to the Atlantic by the Rio Grande inlet.
- Mampituba River
- Três Forquilhas River
- Maquiné River
- Tramandaí River
- Lagoa dos Patos
- Guaíba River
- Camaquã River
- São Lourenço River
- Arroio Pelotas
- São Gonçalo Channel
- Arroio Chuí
Uruguay Basin
- Uruguay River
- Río Negro
- Quaraí River
- Ibicuí River
- Icamaquã River
- Do Meio River
- Piratini River
- Ijuí River
- Comandaí River
- Amandaú River
- Santo Cristo River
- Santa Rosa River
- Buricá River
- Caá-Iari River
- Turvo River
- Guarita River
- Da Várzea River
- Passo Fundo River
- Douradinho River
- Azul River
- Dourado River
- Lambedor River
- Suzana River
- Apuaê River
- Inhandava River
- Pelotas River
Alphabetically
- Amandaú River
- Das Antas River
- Apuaê River
- Azul River
- Bernardo José River
- Boucaraí River
- Buricá River
- Caá-Iari River
- Cacequi River
- Cadeia River
- Caí River
- Dos Caixões River
- Camaquã River
- Camisas River
- Carreiro River
- Cati River
- Caxambu River
- Cerquinha River
- Arroio Chuí
- Comandaí River
- Conceição River
- Douradinho River
- Dourado River
- Erechim River
- Fiúza River
- Forqueta River
- Forquetinha River
- Lajeado Grande River
- Gravataí River
- Guaíba River
- Guaporé River
- Guarita River
- Humaitã River
- Ibicuí da Armada River
- Ibicuí da Cruz River
- Ibicuí River
- Ibicuí-Mirim River
- Ibirapuitã Chico River
- Ibirapuitã River
- Ibirubá River
- Icamaquã River
- Ijuí River
- Ijuizinho River
- Inhandava River
- Itu River
- Ituim River
- Ivaí River
- Jacuí River
- Jacuí-Mirim River
- Jacuizinho River
- Jaguarão River
- Jaguari River (Caí River)
- Jaguari River (Ibicuí River)
- Jaguarizinho River
- Lambedor River
- Mampituba River
- Maquiné River
- Maratá River
- Do Meio River
- Río Negro
- Orgarantim River
- Do Ouro River
- Paranhana River
- Pardo River
- Passo Fundo River
- Pelotas River
- Arroio Pelotas
- Piaí River
- Pinhal River
- Piraçupiá River
- Piraju River
- Piratini River
- Piratini River
- Da Prata River
- Quaraí River
- Quebra-Dentes River
- Rolante River
- Santa Maria River
- Santa Rosa River
- Santo Cristo River
- São Domingos River
- São Gonçalo Channel
- São Lourenço River
- São Sepe River
- Dos Sinos River
- Socorro River
- Soturno River
- Suçuarana River
- Suzana River
- Tainhas River
- Taquari River
- Taquari-Mirim River
- Da Telha River
- Tomé River
- Toropi River
- Dos Touros River
- Tramandaí River
- Três Forquilhas River
- Turvo River
- Uruguay River
- Vacacaí River
- Vacacaí-Mirim River
- Da Várzea River