Quote:

River fishing might be a good excuse to bring the fly rod...hmmm.

I don't fly fish, but there were numerous spots around/near portages that I wished I had some lightweight maybe waist high waders.
Summer might be okay to wet foot, but spring was way to cold for extended fishing.
I would anchor my canoe in stream and cast little spinners.
Fairly tight quarters, but if you have the skills, a  fly rod might be alot of fun for brook trout/small mouth bass and even the big toothy critters.