| Negro River:
· The Rio Negro is one of the largest tributaries of the Amazon River.
· It is also one of the world’s largest rivers in terms of discharge.
Course:
· Origin: It originates in several headstreams, including the Vaupés (Mapés) and the Guainía, which rise in the rain forest of eastern Colombia.
· It flows along the Colombian and Venezuelan border before crossing into Brazil, where it becomes the Rio Negro.
· The Negro meanders generally east-southeastward, picking up the Branco River and other tributaries, to Manaus, Brazil (the largest city in the Amazon Rainforest).
· There it joins the Solimões River to form the Amazon.
· It passes through Colombia, Venezuela, and Brazil.
· Its length is about 1,400 miles (2,250 km), of which 850 miles (1,370 km) are in Brazil.
· The river was named the Negro, which means black in Portuguese because of the water’s dark coloration.
· It is caused by the decomposition of organic matter and the presence of tannins leached from surrounding vegetation, giving the river its distinctively rich coloration.
· The Rio Negro is the largest blackwater river in the world, and despite the coloration, the water contains little sediment and ranks as one of the cleanest rivers on Earth.
· The reserves and national parks along the Rio Negro form a giant protected area called the Central Amazon Ecological Corridor, which is the largest section of protected Amazon Rainforest. |