Río del Oro (Mexico)
The 883rd longest river in the world
The Río del Oro is a river of southern Mexico. It is a tributary of the Balsas River, originating in the Sierra Madre del Sur of Guerrero state and flowing northwards to join the Balsas.
Atlas of Mexico, 1975 (http://www.lib.utexas.edu/maps/atlas_mexico/river_basins.jpg). The Prentice Hall American World Atlas, 1984. Rand McNally, The New International Atlas, 1993.
Flows through: Mexico.
River data from Wikidata (CC0); lengths normalised to a common unit.