It isnt something I thought of either. But, the force of the water in the underground system, when the storm suge hit, pushed most of them off. My boys were ALL advised to stay off the roads if possible. A couple of them fell in, but didnt go all the way down (their gear hung them up). It was most dangerous when the water was between ankle & knee deep-deep enough not to see it missing, but not enough water to slow you down enough to react in time.