My knowledge of the Haw is limited, and what I know comes from several relatives who live there. There are fish in the Haw, but in the past, the Haw was so polluted that few folks bothered to fish it. It's my understanding that the Haw is much cleaner now and ok for fishing, but the stygma remains. Your best bet would probably be to launch a canoe along a road access and fish it that way, unless you could find a landowner willing to give you access to bank fish.