floodplain

Scientific  

/ flŭd′plān′ /

1. 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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Example Sentences

Skagit County, a major agricultural area north of Seattle, has issued an immediate evacuation order to residents who live on the floodplain.

From BBC

Set in the Llanos de Moxos, a vast network of savannas, gallery forests, and floodplains that make up the largest wetland system in the Amazon basin, this area has inspired curiosity for centuries.

From Science Daily

But when a tsunami comes, that farmland becomes a wide floodplain that is difficult to escape in a hurry.

From Literature

The 100 buildings occupied the same floodplain; in the event of flood, the ground floors of all of them were equally exposed.

From Literature

Another major population centre lies in India's northeast, including Assam and the Brahmaputra floodplains, which host more than 6,500 elephants.

From Barron's