watercourse
wa.ter.course \'wo.t-*r-.ko-(*)rs, -.ko.(*)rs\ n 1: a natural or made channel through which water flows 2: a stream of water (as a river, brook, or underground stream)
Webster's English Dictionarywa.ter.course \'wo.t-*r-.ko-(*)rs, -.ko.(*)rs\ n 1: a natural or made channel through which water flows 2: a stream of water (as a river, brook, or underground stream)