you might get more info on this on the Meeting People and the Paddlers Place forums.
The other thing is to use Google Earth to scout the river from space. Usually the photos are NOT done in a drought or flood period, so what you see may be what you get.
YakCatcher Rod Holder
Hardshell Kayak Sail Rigs
Bent Shaft Canoe Paddles
Touring Kayak Paddles