Ivaí River

The Ivaí River (Portuguese, Rio Ivaí) is a river of Paraná state in southern Brazil. It is a tributary of the Paraná River. Its official spelling is Ivaí, with variants including Ivahy and Ival. GEOnet Names Server

The river basin is ecologically very degraded, with fragile and vulnerable soil. It contains the Perobas Biological Reserve, a strictly protected conservation unit created in 2006.

See also List of rivers of Paraná Tributaries of the Río de la Plata