contains process has quality wadi Geonames:H.WADS wadis TGN:21167 FTT:158 TGN:21423 TGN:21424 FTT:157 nullah The temporality of wadis is problematic in deciding whether they are watercourses or valleys. FTT:159 A valley or ravine, bounded by relatively steep banks, which in the rainy season becomes a watercourse. wadi mouth Geonames:H.WADB wadi bend EcoLexicon:wadi wadi junction Geonames:H.WADJ arroyo SWEETRealm:Arroyo https://en.wikipedia.org/wiki/Wadi SWEETRealm:Wash Geonames:H.WAD gully FTT:161 FTT:160 FTT:164 FTT:163 wash coulee valley water flow process water accumulation process discontinuous