title: Biá River
text: # Biá River
  
  The Biá River (Portuguese: Rio Biá) is a river of Amazonas state in north-western Brazil. It is a tributary of the Jutaí River.
  
  The 2,450,380 hectares (6,055,000 acres) Cujubim Sustainable Development Reserve, established in 2003, lies on either side of the river in the municipality of Jutaí. It is the largest conservation unit in Amazonas and the largest sustainable development reserve in the world.
  
  