Floodplain (100-year floodplain)

Floodplain (100-year floodplain)

Floodplain (100-year floodplain)

Synonymous with 100-year floodplain. The land area susceptible to being inundated by stream derived waters with a 1 percent chance of being equaled or exceeded in any given year. (US Army Corps of Engineers, Coastal and Hydraulics Laboratory Glossary, 2015)