The Cuieiras River is a tributary of the Rio Negro, which it enters from the left (east) upstream from Manaus in the Anavilhanas archipelago region.

[4][5] During the second half of the 20th century indigenous families from the middle Solimões River and the upper Rio Negro settled in areas on the banks of the Cuieiras and founded seven communities.

The communities are ethnically diverse, including Cocama, Baniwa, Tucano, Ticuna, Mura, Baré, Sateré-Mawé and Carapana people.

[1] In 1996, indigenous families began to fight for regularisation of property ownership without gaining much support from the Fundação Nacional do Índio (National Indian Foundation, FUNAI).

In January 2014, FUNAI was directed to create a technical group to identify and demarcate the land and submit a final report within six months.