I’m a reasonably good swimmer, I’ve had plenty of training and experience. And if I was in a flood zone I would definitely want to have a life jacket on. Being a good swimmer is only going to help a little bit in a mess like that.

Avoid getting into the water in the first place, of course. Flood water sucks. Climb on your roof, climb a tree, ideally evacuate before the water gets there. But if you’re in a situation where you might fall into the flood water anyway, have a life jacket on.