### Question
How is the "500-year floodplain" defined?


### Answer
The term **500-year floodplain** is defined in *42 U.S.C. § 4004* as follows -

> 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

#### Citation:
  - *42 U.S.C. § 4004*
  - Heading: **CHAPTER 50-NATIONAL FLOOD INSURANCE**

