Jaguarão River

The Jaguarão or Yaguarón River (Portuguese: Rio Jaguarão, Spanish: Río Yaguarón) is a Brazilian and Uruguayan river. It forms the border between Uruguay and Rio Grande do Sul state in southernmost Brazil.

The river originates in Serras de Sudeste (Southeastern Mountain Ranges) and flows east to empty into Lagoa Mirim (Portuguese) / Laguna Merín (Spanish), which is a large coastal lagoon, which is indirectly connected to the Atlantic Ocean.