The river basin lies partly within the 4,245,819 hectares (10,491,650 acres) Grão-Pará Ecological Station, the largest fully protected tropical forest conservation unit on the planet.

[1] It flows through the 3,172,978 hectares (7,840,600 acres) Trombetas State Forest from north to south.

[2] Part of the river's basin is in the Maicuru Biological Reserve.

[3] The river is also fed by streams in the 216,601 hectares (535,230 acres) Mulata National Forest, a sustainable use conservation unit created in 2001.

This article related to a river in Pará, Brazil is a stub.