I have heard that this is one of the best whitewater runs in Arizona. Rumor has it the run is class V and there are 3 portages at higher flows (2000+ cfs), fewer portages with regular flows (1400ish). Seal-launch portages are supposedly common. Access is interesting. Fishing permits are recommended. Looks like a great place to go for walled in whitewater.
Rumor has it that write up was taken down after a heavy dose of hate mail was received... not from authorities, but from Arizona paddlers that didn't want beta shared.