a nearly flat plain along the course of a stream or river that is naturally subject to flooding.
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How to use flood plain in a sentence
Spring Creek and Union Creek are short and have formed no extensive floodplain.Fishes of Chautauqua, Cowley and Elk Counties, Kansas | Artie L. Metcalf
British Dictionary definitions for flood plain
the flat area bordering a river, composed of sediment deposited during flooding
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for floodplain
Flat land bordering a river and made up of alluvium (sand, silt, and clay) deposited during floods. When a river overflows, the floodplain is covered with water.
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