Border between Brazil and Uruguay, view from 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.
The river is navigable as far up as the town of Jaguarão.
- ^ 'Río_Yaguarón', Wikipedia (in Spanish) es:Río Yaguarón,
See also 
Coordinates: 32°39′14″S 53°10′56″W / 32.65389°S 53.18222°W