Rio Negro (Brazil)

Rio Negro is a major blackwater river in northern Brazil, flowing through the Amazon rainforest. Known for its dark, tea-colored water rich in organic materials, it is one of the largest tributaries of the Amazon River. Its unique coloration results from slow decomposition of plant matter, which influences the local ecosystem. The river supports diverse wildlife, including fish species adapted to its acidic waters. It also provides vital transportation routes for local communities and plays a crucial role in regional ecology and climate regulation. Rio Negro’s extensive basin and ecological importance make it a key feature of the Amazon region.