Rio das Mortes, River system in Mato Grosso, Brazil.
Rio das Mortes is a river system stretching roughly 800 kilometers across the Mato Grosso Plateau before merging into the Araguaia River. The waterway supports numerous fish species and receives water from countless tributaries that flow through the highland landscape.
The Xavante people named this river and inhabited its banks long before Portuguese explorers ventured into the region during colonial times. The arrival of outsiders brought significant changes to the area's indigenous societies.
Indigenous communities have lived along these banks for centuries and continue to fish using traditional methods that connect them to their ancestral ways. The river remains woven into the daily life and identity of people in the region.
Water levels vary significantly throughout the year, with higher flows from December to May and lowest levels between September and October. Plan visits and water activities with these seasonal changes in mind for the best experience.
Scientific research has shown that this waterway ranks among the cleanest rivers in the world based on water composition analysis. This exceptional purity makes it noteworthy for researchers studying water quality globally.
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