The Branco River is the principal affluent of the Rio Negro from the north.
Branco River in Boa Vista city, Roraima state, Brazil. The Macuxi Bridge, 1.2 km (0.75 mi) long, can be seen in the background.
The Rio Negro, or Guainía as it is known in its upper part, is the largest left tributary of the Amazon River, the largest blackwater river in the world, and one of the world's ten largest rivers by average discharge.
Sunset over the Rio Negro, upstream from Manaus
Cruise ship on the Rio Negro on the way to the city of Manaus.
The confluence of the Amazon River and the Rio Negro at Manaus, Brazil.
Rio Negro near Manaus