One thing to be certain is on the floor if any drains or tooliets is to have anti-backup stuff installed. In areas that cannot get a direct flood of over the banks of rivers, you still can wind up with a flooded basement from sewers and toilets backing up. With the anti backup installed, you will be much safer from flooding.
It's a real horror to watch water flowing in like fountains from sewers and toilets and NOTHING you can do about it.
It's a real horror to watch water flowing in like fountains from sewers and toilets and NOTHING you can do about it.

