The Águas Emendadas Ecological Station is an ecological station in the Federal District, Brazil. It protects an area of cerrado biome in excellent condition, including savannah, scrub and forest. Streams flow from the station north into the Tocantins River basin, which connects to the Amazon River basin, and south into Río de la Plata basin. The flat terrain floods in the rainy season and lets fish pass between the river basins.