Floodplain meaning

flŭd'plān'
A plain bordering a river and subject to flooding.
noun
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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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(geography) An alluvial plain that may or may not experience occasional or periodic flooding.
noun
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