Yes this run is off snow melt it would be tricky to catch with rain but im sure its possible I just wouldnt want to be in there when it flashed or water got super high. There really is no escape once your 4 miles in or so. There is a small drainage that comes in on the left and a big pool with a 12 footer. This is your last chance to escape the canyon after that your commited. The water was low in some places and perfect in others. The paddle out will be low no matter what its just the nature of the beast. If the paddle out is at a great level then the canyon would be huge. I believe one of the guys dislocated his shoulder so they all hiked out. In the Arizona Guidebook it makes this run sound sorta mellow but its a solid non stop class V adventure perhaps more then a mellow class V boater would want. swimming or loosing gear in this place would turn epic. The great part is there is USGS gauge for this run and you want to look for a range of 300 to 700.