what is the area that supplies what to a river system called
an entire river system or an area drained by a river and its tributaries. Also called a watershed. dredge: Verb: to remove sand, silt, or other material from the bottom of a body of water. dugout canoe: Noun: small boat made by hollowing out a log or tree trunk. dwarf: Verb: to make something appear small by having it appear next to something much larger.