[Termite_Commander]

This water could have sewage, chemical contamination, all sorts of things in it. It could be a nightmare, or it could be another lucky miss.

I think there's a chemical plant quite close to NO that might be destroyed. Don't forget the various critters (i.e. water moccasins) from the bayou that would probably wash into New Orleans if it were flooded.

[Knitting A Conundrum]

If you've never been in a flood before, let me tell you the water's nasty, even if it's mostly a rainfall flood with little current. Sewage, for sure. Chemicals from the street. Critters - snakes, fireants, rats. In that area, maybe a gator or two. Stray dogs. Mud. Stuff can leak from areas flooded. There will be drowned cars. There will be stuff from people's carports and garages, stuff broken and windblown, treebranches, trees, windows, roofing, wood.

Nasty.

And yes, there's lots of chemical business around New Orleans, or was when I used to live there. And other types of plants that would have hazardous stuff, too.

[PAR35]

I think there's a chemical plant quite close to NO

There are dozens of chemical plants and toxic waste sites in the area. They pretty much line both sides of the river all the way to Baton Rouge.