Does it flood often north of 98 when there are heavy rains? Some of the houses near the water look like they might have issues. Looking for information for a future move to the area. I would hate to buy a house that floods easily.
Most of this area is situated in a "swamp". Almost everything has the potential for flooding.
First, I'd suggest (if possible) taking a ride just after a storm and look at the areas you may be interested in. Look for standing water one to two days after a storm event, that's a red flag for me. Ask neighbor's too. Places with wood planks spanning the small front yard swales in certain developments front yards are a sure sign of water issues.
Check to see what and where the Storm Water plan is, don't be surprised if there isn't one... Another red flag. Are there retention ponds?
If you have time, go research the previous post on the three tier County Storm Water Plan, it has a large attachement to it. That outlines some very specific areas that experienced serious flood water issues in April 2014. I'd avoid any of those areas, until the County get's its act together and corrects the challenges in those listed areas.
Finally, I really avoid any new development areas. There is a reason certain areas have homes and others don't. Those properties that have been established should be easy to determine flood risks, simply becasue they have been in existenance and had the rain fall. Those that are "on the table" and in planning or building stages have never experienced significant rain. Thus, its 50 / 50 % and a gamble.
While some realtor types will be quick to disagree, remember this is your investment, choose wisely and find someone not just out there to make a commission.
My quick answer to your initial question is "Yes, it floods north of 98, specifically in the Driftwood area, Chat Holley Area too".
Another option is to go pull the old WCSO road closure announcements and look at which roads were closed when we had heavy rain. That will also give you an indicator.