With the higher river water (and still rising), this is the time for a big fat 'eye for Christmas. Flooded areas adjacent to the main river channel, especially weedy areas will hold baitfish and everything else. Hopping jigs during the day or casting rattling stickbaits after dark will be worth it if you find the right areas.
I truly believe there is a new state record walleye to be had from the open water of the Allegheny River, nonetheless.