flood plain

a nearly flat plain along the course of a stream or river that is naturally subject to flooding.

Origin of flood plain

First recorded in 1870–75

Evidently the fauna is the same as that of the flood-plain, with which it is here included.

The Mammals of Warren Woods, Berrien County, Michigan |Lee Raymond Dice
Along its flood-plain portion, a stream deposits more or less sediment on its flats.

The Geography of the Region about Devils Lake and the Dalles of the Wisconsin |Rollin D. Salisbury
Besides depositing on its flood-plain, a stream often deposits in its channel.

The Geography of the Region about Devils Lake and the Dalles of the Wisconsin |Rollin D. Salisbury
She reports that they were obtained in the flood-plain banks of the streamsides, and preferred the pine belt.

The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 |Stephen D. Durrant

The flood-plain of the Tigris and Euphrates, and a few of the river-valleys are highly productive.

Commercial Geography |Jacques W. Redway

flood plain

the flat area bordering a river, composed of sediment deposited during flooding