noun
the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet
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flood control in the Missouri basin
• Syn: ↑river basin, ↑basin, ↑watershed, ↑drainage basin, ↑catchment area, ↑drainage area
• Hypernyms: ↑geographical area, ↑geographic area, ↑geographical region, ↑geographic region
• Hyponyms: ↑detention basin, ↑retention basin
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nounsee catchment area I
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catchment basin or catchment area,
a land area, bounded by natural watersheds and usually the sea, where rainfall is drained by a river system.
Useful english dictionary. 2012.