I'd imagine you are wondering whose basements got flooded in the recent rains? Because you don't have to be in a flood zone for that to happen. That one is tougher. If the house is on the market, they (seller and agent) are honor bound to tell you if the house got water.
If you would like, feel free to contact me and let me know exactly what it is you want to know and I would be glad to help.
But in general if you want to see what FEMA considers to be flood areas goto:
and put in an address to get a flood map.