Definition of floodplain in English:

floodplain

Line breaks: flood|plain
Pronunciation: /ˈflʌdpleɪn
 
/

noun

An area of low-lying ground adjacent to a river, formed mainly of river sediments and subject to flooding.
More example sentences
  • Lastly the Holocene (10,000 years to present) deposits that occur under Belfast were mainly deposited on the flood plain of the River Lagan.
  • The objectors say the problem is that Iburndale Beck runs alongside the land and the area is a low-lying flood plain.
  • The most central region culturally and economically is the lowland flood plain of the Mekong River and Tonle Sap Lake.

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