With less than 70 days until the start of the next hurricane season, Seminole County is starting to update its floodplain management plan for the next five years ... Harris says many of those maps ...

According to the U.S. Geological Survey, one statistic scientists use is the percentage chance that a flood of a specific magnitude will happen. A 500-year flood means such an event has a 1 in 500 ...

"Now we're working with the Harris ... year floodplain has been drawn up and kicked off in piecemeal construction phases based on available funding. The county expects revised FEMA flood maps ...

“This legislation would set the boundaries for the 100- and 500-year ... of a flood. The county is in the process of creating a webpage displaying preliminary Flood Insurance Rate Map changes ...

At the time it was considered the second 500-year flood ... determine floodplain maps, marking the boundary where there's a 1% chance of flooding in any single given year within an average period ...

Several Carroll County communities ... surpassed some 500-year floodplain areas 一 places with a 0.2% chance of flooding in a given year 一 based on state flood hazard maps.