EntityQ2769233· pop 6· linked from 63 articlesBlackadder WaterSign in to saveriver in Scottish Borders, Scotland, UK, tributary of Whiteadder WaterConnectionsEnglish languageConceptEnglandEntityScotlandEntityNorth SeaEntitygeographic coordinate systemEntityGreat BritainEntityScottish GaelicEntityRiver ThamesEntityScotsEntityOld EnglishEntitydrainage basinEntityNorthumberlandEntitytributaryEntityOCLC, Inc.EntityRiver SevernEntityRiver ClydeEntityRiver TrentEntityRiver TweedEntityBerwick-upon-TweedEntityScottish BordersEntityCategoriesRivers of the Scottish BordersTributaries of the River TweedTweed catchment