It took me a bit of effort to find this info, so I figured I'd share it here. Conagua seems to regularly change where they report these data, so until these links stop working, here is how to find the recent flow data (gastos) for some of Sonora's rivers. These Boletins appear to come out somewhat irregularly and are a challenge to find, but hopefully the methods below will continue to work.
A story has been written and posted about this trip - see the Rio Tutuaca photo gallery here.
The upper Santa Cruz River in Arizona is navigable by boat! The boats (IKs) are smaller than full rafts and float in a few inches of water. We had to drag occasionally and be careful of debris, but were able to float several miles of the Rio Santa Cruz!
This stretch has flows, which are supported by effluent from a sewage treatment plant in Nogales, AZ.
This expedition was put together with support from the Northern Jaguar Project. The goal was to document flora and fauna in the remote and wild region in eastern Sonora.
In early April 2011 a 2 person crew took 2 inflatable kayaks down part of the Rio Aros and Rio Yaqui to do bird surveys on parts of the Northern Jaguar Reserve and nearby areas. The reserve encompasses 70 square miles of prime jaguar habitat just 125 miles south of the Arizona border. This area is one of the most remote and rugged wilderness left in northern Mexico.
