Rio Javaés

Rio Javaés
Rio Javaés with Ilha do Bananal near Formoso do Araguaia ( TO )
Data
location	Brazil
River system	Rio Tocantins
Drain over	Rio Araguaia  → Rio Tocantins  → Rio Pará (bay)  → Atlantic
origin	Junction from the Rio Araguaia in the triangle of Mato Grosso - Goiás - Tocantins 12 ° 51 ′ 42 ″  S , 50 ° 30 ′ 32 ″  W
muzzle	at the border triangle Tocantins - Mato Grosso - Pará back in the Rio Araguaia Coordinates: 9 ° 50 ′ 23 ″  S , 50 ° 12 ′ 25 ″  W 9 ° 50 ′ 23 ″  S , 50 ° 12 ′ 25 ″  W
Right tributaries	Rio Verde
Hydrologically the tributary of the Rio Araguaia

The Rio Javaés is the right side stream ( port. : Braço menor ) of the Rio Araguaia in Brazil and forms the largest river island , the Ilha do Bananal , in the world. Its name comes from the indigenous population of the Javaé , who live on the Ilha do Bananal.

Its upper course, which forms the border between the states of Tocantins and Goiás , belongs to the Meandros do Rio Araguaia environmental protection area up to the mouth of the Rio Verde .