flood plain

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top: a river at normal level
bottom: a river that has flooded and spread to low-lying areas on either side of the river


also flood plain  (flŭd′plān′)
A plain bordering a river and subject to flooding at times of high water.

flood plain

1. (Physical Geography) the flat area bordering a river, composed of sediment deposited during flooding

flood′ plain`

or flood′plain`,

a nearly flat plain along the course of a stream or river that is naturally subject to flooding.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.flood plain - a low plain adjacent to a river that is formed chiefly of river sediment and is subject to floodingflood plain - a low plain adjacent to a river that is formed chiefly of river sediment and is subject to flooding
champaign, plain, field - extensive tract of level open land; "they emerged from the woods onto a vast open plain"; "he longed for the fields of his youth"
References in periodicals archive ?
The downpour broke the River Wansbeck's banks, resulting in 400 people being evacuated while flooding wrought havoc to over 1,000 properties on the flood plain.
Phase II will consider flood plain development as an alternative.
In an interview he said: "We will never be able to say there should be a blanket ban on any building in the flood plain.
For the vertical-wall abutment model the initial failure zone was consistently observed at the upstream corner of the abutment in the armored flood plain (figure 6).
The Prairie Island Coalition also lobbied and aired a series of clever radio and TV ads, poking fun at the idea of storing radioactive waste on the Mississippi flood plain.
Answers included concerns with liability, relocating off a flood plain, J-1 visa problems, providing program variety for returning campers, campers with severe personal problems, finding grants to support low-income programs, not enough room for everyone who wants to come to camp, and "urban creep.
5 million for a Fund to underwrite the costs of a flood plain map modernization program using state-of-the-art technology.
The South West control is based in a flood plain sited around the back of Sainsburys in a retail park.
If no one builds on a flood plain, floods cause no damage.
The decision was based in part on statements from residents that maps designating the flood plain are inaccurate and that the development could put them at risk if it reduced the area's ability to absorb a flood.
FEMA representatives say they would like to see Karlin move, and so far have provided funds for the county to purchase and raze 41 homes in the North La Junta flood plain.
Much of the land being reforested is marginal farmland lying within the flood plain.