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 ?
Some of the site falls within a flood risk zones as it borders the River Sowe and there are conditions to ensure there is sufficient flood plain compensation and an attenuation pond which will contain standing water.
A Model Draft Bill for Flood Plain Zoning Legislation was circulated by the Union Government in 1975 to all States to help States enact legislation.
It will take place in fields to the north of the Metro line and to the west of Wellfield, where a naturallyoccurring flood plain already exists.
Through lowering field levels, the flood plain storage capacity will be increased by around 7,000 cubic metres.
The flood plain issue has always been contentious, and Diane McLean, leading the We Want Wimbledon campaign to retain greyhound racing on the site, previously told the Racing Post: "A major negative has been the lessening of the flood plain risk designation by the Environment Agency at a time when, bizarrely, everyone can see the national risk has significantly increased.
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.
Clairville is not the ideal place for housing, it has suffered in the past from flooding and is a recognised flood plain.
Documents obtained by Wales on Sunday reveal Natural Resources Wales has raised concerns the plans for a new six-lane road - parts of which run across a flood plain - have not taken into account the impact of climate change.
They had made a mistake, the area was no longer a C2 flood plain and they withdrew their objections.
The flood plain allowed them to develop a virtually perfect 'Palaeolithic diet' in which protein consumption was balanced by carbohydrate and fat intake.
The Impact of Climate Change and Population Growth on the National Flood Insurance Program" predicts that because of climate change, for inland areas, the average increase in both the river depth and the area in the flood plain are expected to increase by 45 percent by 2100.