It flows from a source in the South San Juan Wilderness of Conejos County, Colorado southwest past Chromo, Colorado.

The river dips into New Mexico, passing just north of Dulce before heading northwest to a confluence with the San Juan in Archuleta County, Colorado.

[4] A large portion of its water is diverted across the Continental Divide to the Rio Grande basin as part of the San Juan–Chama Project.

This article related to a river in Colorado is a stub.

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