The station occupies gently rolling terrain between two of the Amazon's great tributaries. The Abacaxis River forms the western boundary, fed by the Curauari, Caramuri, and Paracati. The Parauari flows through the eastern portion. At the center, the Maues Acu basin gathers a remarkable number of waterways: the Maues-Mirim, Urupadi, Andira, Paraconi, Arari, Apoquitaua, Pupunham, and Amana rivers all contribute their waters before the Maues Acu merges with the Parana do Uraria near the town of Maues. Open V-shaped valleys channel these rivers through corrugated undulations of forest-covered hills. Lakes, ponds, and streams fill every depression, creating a mosaic of aquatic habitats that support species from Amazon river dolphins to tucuxi.

Biologists call this area an ecological sanctuary, and the label is not casual. Among the station's 14 primate species, three are endemic, found only in this interfluvial region. The red-faced spider monkey, the white-nosed saki, and the woolly monkey are all classified as threatened. Beyond primates, the station supports more than 600 bird species and provides viable habitat for the jaguar, the Amazon's apex predator. About 78% of the station is covered by dense submontane rainforest with emergent trees that break through the canopy, some reaching heights that dwarf everything around them. Another 7% is dense submontane forest with a more uniform canopy, while smaller patches of alluvial rainforest and open submontane forest round out the habitat diversity.

The Alto Maues Ecological Station did not come into existence through simple conservation idealism. The Brazilian government created it on 16 October 2014 as explicit compensation for the anticipated impacts of the Tapajos hydroelectric complex on seven federal environmental units. The station was listed for creation under ARPA, the Amazon Region Protected Areas Program, but the process dragged on for years. Political opposition in Amazonas state was fierce: the municipality of Maues already hosted four protected areas and the Andira Marau Indigenous Territory. Adding another massive conservation unit, critics argued, would lock up land believed to hold significant gold deposits. The tension between mineral wealth and biological wealth defined the debate, and in the end, biology won a round. ICMBio, the Chico Mendes Institute for Biodiversity Conservation, was given administrative responsibility.

The station carries the most restrictive conservation classification available under Brazilian law: IUCN Category Ia, a strict nature reserve. Unlike national forests, where sustainable logging and mining are permitted, an ecological station exists for preservation and research alone. No resource extraction is allowed. But the decree that created Alto Maues left a significant gap: it did not delimit a buffer zone around the station. Buffer zones are the areas where activities like mining and logging require special authorization to minimize impacts on the protected core. Without that boundary, the station's edges remain exposed. Bordered by the Pau-Rosa National Forest to the northwest, the Amana National Forest to the east, and the Urupadi National Forest to the south, Alto Maues sits within a constellation of protected lands. Whether its strict-protection status can hold against the pressures of gold mining and hydroelectric development will depend on enforcement that matches the ambition of the designation.