It is the largest tributary of the Yaqui river, and is the largest free flowing river in western Mexico.
The rugged terrain surrounding the river means it is most easily accessible by boat.
[1] Large portions of the Aros river are included in the Northern Jaguar reserve, which supports the northernmost breeding jaguar population.
[2] Other examples of species that dwell in the river basin include military macaws, spotted box turtles, desert pocket mice, and Tarahumara salamanders.
This article related to a river in Mexico is a stub.