It really is a bummer and I think everyone who fishes tailwaters felt a chill when we read about it. Most of us have been there, or close enough to it to never forget. I read today that the poor fellow could not swim. Not that it would have necessarily been the difference, but I suggest that anyone who has trouble swimming should have an inflatable life jacket on on those types of waters. In fact, it's not a bad idea for all of us.
Prayers for the family and friends.