Deep water with cover is primo but usually hard to work from the bank or wading. You might want to look for shelves or vegetated flats immediately adjacent to deep water. I saw several decent fish last week that were holding in <3' of water, but all were near deeper water. In all the rivers on the plateau, deep holes offer critical summer low-water refugia, and fish won't be far away. Approach cautiously -- they get spooky when they don't have lots of water or cover over their heads. They may also follow farther back then they otherwise would; blew a shot at one by picking up the line and starting another cast just as the fish came into view. Also consider sticking to an I-line or floater and topwaters; without being able to get to snagged flies you'll bust off a bunch...
