Igapó-Açu River

Igapó-Açu River
Native nameRio Igapó-Açu (Portuguese)
Location
CountryBrazil
Physical characteristics
Source 
  locationAmazonas
Mouth 
  coordinates
4°23′41″S 59°58′22″W / 4.394599°S 59.972657°W / -4.394599; -59.972657
Length500
Basin features
Tributaries 
  rightMatupiri River

Igapó-Açu River (Portuguese: Rio Igapó-Açu is a river of Amazonas state in north-western Brazil. It is a left tributary of the Madeira River.

The river flows through the Purus-Madeira moist forests ecoregion.