Runoff
/rˈʌˌnɔf/
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Definition
(noun) That portion of precipitation or irrigation on an area which does not infiltrate or evaporate, but instead is discharged from the area.
Sentence Examples
Runoff from upstream development had almost destroyed all aquatic life in the stream.
These runoff elections will decide who will gain control of the Senate.
CEFR Practice Quiz
Heavy rainfall caused significant ____ that carried topsoil into the nearby river.