Rio Chinipas (Tom Robey)

American Whitewater has an article about the Río Chínipas in its January/February 2010 edition written by Rocky Contos.  It is located to the northwest of Divisadero.  It is a class IV run that is 102 miles in length with access in the middle of the run at the town of the eponymous name.

First Descents (Rocky Contos)

In the summer of 2006, I and some others did several first descents in the Copper Canyon region.  These were:

Rio Huevachic-Oteros-Chinipas (one trip: 8 days, ~220 km; tons of class V-VI on Huevachic with many mandatory portages, mostly IV on Oteros, III-IV on Chinipas)

Rio Choix (4 days: ~80 km; class IV-V; one mandatory portage)

Rio Tutuaca (4 days: ~200 km; class III-IV; one gorge with some class V)

Rio Papigochic, upper (3 days: ~80 km; class III; runout on Rio Sirupa to Puente Sirupa)