floodplain
noun
flood·plain
ˈfləd-ˌplān 
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
But Suen encourages residents in flood-prone areas to still have an emergency preparedness kit ready, along with knowing their flood risk and looking at FEMA floodplain maps for their families.
—
Charlie Lapastora, CBS News, 6 Jan. 2026
The team installed beaver-style dams across the Cache la Poudre and Willow Creek watersheds — both burned in the 2020 wildfires — to help slow water flow and instead spread the water over a floodplain.
—Elise Schmelzer, Denver Post, 30 Dec. 2025
Roads, railways, factories and ports expanded into floodplains.
—Farshid Vahedifard, The Conversation, 29 Dec. 2025
Miami-Dade County also maintains its own interactive flood zone maps and floodplain management resources, which can provide additional local detail.
—Allison Palmer, Miami Herald, 18 Dec. 2025
See All Example Sentences for floodplain
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Charlie Lapastora, CBS News, 6 Jan. 2026
The team installed beaver-style dams across the Cache la Poudre and Willow Creek watersheds — both burned in the 2020 wildfires — to help slow water flow and instead spread the water over a floodplain.
—Elise Schmelzer, Denver Post, 30 Dec. 2025
Roads, railways, factories and ports expanded into floodplains.
—Farshid Vahedifard, The Conversation, 29 Dec. 2025
Miami-Dade County also maintains its own interactive flood zone maps and floodplain management resources, which can provide additional local detail.
—Allison Palmer, Miami Herald, 18 Dec. 2025
See All Example Sentences for floodplain
Cite this Entry
“Floodplain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/floodplain. Accessed 6 Jan. 2026.
Copy CitationKids Definition
floodplain
noun
flood·plain
-ˌplān
1
: low flat land along a stream or river that may flood
2
: a plain built up from earth left by floodwaters
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