This is a really sad story which in all likelyhood is only going to have a bad outcome, my heart goes out to his family and i really hope i'm wrong.
My regular fishing mate and i had this conversation a few weeks ago, i had been fishing after dark in torrential rain moving swims every half hour or so, the banks were steep and very awkward to say the least and were fast becoming downright dangerous, now that bit of river is not a place you want to end up in so i did the sensible thing for once and despite perfect conditions i called it a day.
BUT, the fact is that we all take stupid risks on rising/flooding rivers and how many of us bother to wear a life jacket ? i would guess the answer to that is none! Yes the cold will get you as well as John so rightly says, but i would much rather end up in the river with a jacket on than not, as for not panicking, well thats easy to say and not as easy to actually do!
If nothing else good comes from this horrible story i hope you all start to think the worst and take precautions.
Stay safe.