The Uatumã Biological Reserve is divided between the municipalities of Urucará (35.55%), São Sebastião do Uatumã (16.56%) and Presidente Figueiredo (47.89%) in Amazonas.
It has an area of 940,358 hectares (2,323,680 acres).[1]
It lies along the northeast shore of the Balbina Dam reservoir.
To the west is adjoins the Waimiri Atroari Indigenous Territory.
The Pitinga mine is northwest of the reserve.
The Trombetas/Mapuera Indigenous Territory is north and east of the reserve.[2]
The Biological Reserve is a "strict nature reserve" under IUCN protected area category Ia.
The purpose is to preserve the biological diversity of the dense rainforest ecosystem in the basin of the Uatumã River and Jatapu River, and the lake and island ecosystems formed by the Balbina Dam on the Uatumã, and to protect endemic, rare, vulnerable or endangered species.[8]
The conservation unit is supported by the Amazon Region Protected Areas Program.[9]
Protected species in the reserve include the sponge anheteromeyenia ornata and the amazonian manatee (trichechus inunguis).[7]
World Conservation Monitoring Centre (1992), "Annex", Protected areas of the world, 4th World Congress on National Protected Areas, Caracas, Venezuela, 10–21 February 1992, Gland [u.a.]: IUCN, ISBN978-2-8317-0093-9, retrieved 7 March 2012