in flood
phrase
of a river, lake, etc.
: close to overflowing its banks and flooding the land next to it
After a week of rain, the river is in (full) flood.
Note: The phrase in full flood is sometimes used figuratively to describe the time when something is most active, successful, etc.
a political movement that was in full flood in the 1980s
Cite this Entry
“In flood.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/in%20flood. Accessed 28 Oct. 2026.
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