stormwater
noun
storm·wa·ter
ˈstȯrm-ˌwȯ-tər
-ˌwä-
: rainwater produced by a storm
a stormwater management system
As stormwater runs over lawns, streets and other man-made surfaces, it picks up pollutants—phosphorous and nitrogen from fertilizers, bacteria from pet waste and road salt, to name a few—and carries them into local streams and lakes.—Delen Goldberg
This rainfall "of biblical proportions," as the local newspaper described it, swamped the city in waist-high stormwater.—Christopher Cooper and Robert Block
Cite this Entry
“Stormwater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stormwater. Accessed 4 Sep. 2026.
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