Essentially, it's an estimate, a statistical calculation that helps the government determine floodplain maps, marking the boundary where there's a 1% chance of flooding in any single given year within ...
Updated maps from Williamson County show an increase of 6,000 structures in the 100-year flood plains. The last information ...
a statistical calculation that helps the government determine floodplain maps, marking the boundary where there's a 1% chance of flooding in any single given year within an average period of 100 ...
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