Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun drainage_area

1 sense of drainage area

Sense 1
river basin, basin, watershed, drainage basin, catchment area, catchment basin, drainage area -- (the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet; "flood control in the Missouri basin")
       => geographical area, geographic area, geographical region, geographic region -- (a demarcated area of the Earth)

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