The Coalcomán River is a river of Michoacán state, in western−central Mexico.
Geography Its watershed is in the Sierra Madre del Sur mountain range. Its river mouth is on the Pacific Coast of Mexico.
See also Coalcomán de Vázquez Pallares — municipality on the river. List of rivers of Mexico
References
Utexas.edu: "Atlas of Mexico" − Map of the rivers and river basins of Mexico