Walleye in heavy current feed often and strike hard.
If its shallow a spinnerbait will get the bigger fish. Just fish it down current very slow.
If its deeper water this is weighted swimbait territory. Again slow is the key. Pop it off bottom much like jigging but much slower as it takes time for the bait/lure to get back to bottom. The current provides and awesome erratic action on the swimbait. Be carefull choosing your baits though, many wont run true in heavy current.
A simple jig and grub will work here also. Again the key is slow.
Use good line and a reel with a good drag. A 2lb walleye in heavy current feels like a 12lb fish. Dont take your time to land them either. The will wrap around rocks etc once hooked. Really pay attention to where your line is going.
also, look for those submerged rocks. Thats where they ambush prey from. They sit behind structure in wait, also reducing their effort to stay in place.