Definitions applicable to Biggert-Waters Flood Insurance Reform Act of 2012
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(a) In generalIn this subtitle, the following definitions shall apply:
(1) 100-year floodplain
The term “100-year floodplain” means that area which is subject to inundation from a flood having a 1-percent chance of being equaled or exceeded in any given year.
(2) 500-year floodplain
The term “500-year floodplain” means that area which is subject to inundation from a flood having a 0.2-percent chance of being equaled or exceeded in any given year.