Ivaí River

The Ivaí River (Portuguese, Rio Ivaí^[4]) 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.^[5]

Ivaí River
Location
Country	Brazil
Physical characteristics
Source
• location	Paraná state
Mouth
• location	Paraná River
Length	798 km (496 mi)[1]
Basin size	36,587 km2 (14,126 sq mi)[2]
Discharge
• location	mouth
• average	(Period: 1974-2008) 733.4 m3/s (25,900 cu ft/s)[3]

The river basin is ecologically very degraded, with fragile and vulnerable soil. It contains the 8,716 hectares (21,540 acres) Perobas Biological Reserve, a strictly protected conservation unit created in 2006.^[6]

See also

• List of rivers of Paraná
• Tributaries of the Río de la Plata

23°18′17″S 53°41′49″W^[7]