Atrato River 阿特拉托河
The Atrato River (Spanish:Río Atrato) is a river of northwestern Colombia. It rises in the slopes of the Western Cordillera and flows almost due north to the Gulf of Urabá (or Gulf of Darién), where it forms a large, swampy delta.
Its course crosses the department of Chocó, forming that department's border with neighbouring Antioquia on two occasions.
Its total length is about 650 km (400 mi), and it is navigable as far as Quibdó (400 km / 250 mi).