part of has part stream headwater headwaters source headstream FTT:1259 FTT:105 FTT:644 FTT:220 FTT:1221 drainage basin Geonames:H.STMH https://en.wikipedia.org/wiki/Headwater TGN:21181 The upper part of a river system, denoting the upper basin and source streams of a river. stream HEADWATER structural basin compound astronomical body part