Disregard the answer below as I was under the impression you were asking about Meadow Woods in Heather Glen here in Cobb County, GA. Best of Luck, but if you go to the tax records for the house it will tell you the chances of floods in the area.
The land there has probably experienced floods or flooding conditions in the past 5,000 years. That aside the tax records have it as Flood zone X in FMLS and thus that area is determined to be outside the 100- and 500-year floodplains. So basically you have a 1 in 100 year or 1 in 500 year chance of it flooding. Odds are good and if not there are always tractors to build moats around the property as well as the option of sand bag walls. Let me know if you have any other questions.