flood·​plain | \ ˈfləd-ˌplān How to pronounce floodplain (audio) \

Definition of floodplain

1 : level land that may be submerged by floodwaters
2 : a plain built up by stream deposition

Examples of floodplain in a Sentence

Recent Examples on the Web After flooding in 2019 breached a levee in northwest Missouri on the Missouri River, for example, the levee was moved back to create more than 1,000 acres of floodplain and added wetlands. Michael Phillis, ajc, 18 Apr. 2022 One of my favorite bakeries and cafés in Podil, a historic neighborhood on the floodplain of the Dnieper River, had reopened. The New Yorker, 1 Apr. 2022 The project, on the south side of Loop 1604 just west of the University of Texas at San Antonio’s main campus, sits partly in a floodplain, according to San Antonio River Authority maps. Elena Bruess, San Antonio Express-News, 26 Feb. 2022 In all, the eight-phase project is designed to reduce the number of homes in the floodplain by about 450. Scott Huddleston, San Antonio Express-News, 11 Jan. 2022 Some of the property that is under development is located on a floodplain, according to the San Antonio River Authority's online maps that show flood risks across the city. Malak Silmi, San Antonio Express-News, 8 Dec. 2021 As a city that sits on a floodplain, London has already taken some important steps. Mark Landler, New York Times, 2 Aug. 2021 Thousands of workers settled on the coastal floodplain. Eric Klinenberg, The New York Review of Books, 22 Oct. 2020 In addition to expanding the underground culvert near the road, downstream another culvert will be removed and a floodplain reestablished with native trees and shrubs to slow the velocity of the stream. John Benson, cleveland, 16 Feb. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'floodplain.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of floodplain

1873, in the meaning defined at sense 1

Learn More About floodplain

Time Traveler for floodplain

Time Traveler

The first known use of floodplain was in 1873

See more words from the same year

Dictionary Entries Near floodplain



flood stage

See More Nearby Entries 

Statistics for floodplain

Last Updated

25 Apr 2022

Cite this Entry

“Floodplain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/floodplain. Accessed 16 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for floodplain


flood·​plain | \ ˈfləd-ˌplān How to pronounce floodplain (audio) \

Kids Definition of floodplain

: low flat land along a stream that is flooded when the stream overflows

More from Merriam-Webster on floodplain

Thesaurus: All synonyms and antonyms for floodplain

Britannica.com: Encyclopedia article about floodplain


Test Your Vocabulary

Name That Food

  • a-light
  • Name these cookies!
True or False

Test your knowledge - and maybe learn something along the way.

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!