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Thesaurus: watersheds

n. a ridge of land that separates two adjacent river systems n. the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet n. an event marki…

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  1. n. a ridge of land that separates two adjacent river systems n. the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet n. an event marking a unique or important historical change of course or one on which important developments depend