If you go to
www.sumtergis.com (for Sumter addresses) you can see the property map. One feature lets you click on the curves for revised flood plain (per Homeland Security). That may (or may not) influence you.
Keep in mind that 1 foot of water will make a mess out of your home - it isn't just the 10 foot tidal surge.
We have it and intend to keep it.