Ribeirão Rodeador is a freestone stream flowing through the Federal District of Brazil, recognized as one of the more popular fishing destinations in the region. It drains a sub-basin of the Descoberto River, covering a total watershed area of 113 km², and is characterized by flat to gently undulating topography underlain by Oxisols — deep, weathered tropical soils typical of the Brazilian Cerrado. The stream is unregulated, meaning there are no dams controlling its flow, and it contributes significantly to the downstream Descoberto reservoir with an average long-term annual flow of approximately 1.7 m³/s. The surrounding landscape is dominated by irrigated and rainfed agriculture, which shapes both the riparian character of the stream and the water quality anglers will encounter. Average annual rainfall across the basin is around 1,417 mm, concentrated in the wet season, which directly influences seasonal flow conditions and fishing patterns.