The River Stour (ˈstʊər,_ˈstaʊər, rhymes with "tour" or with "sour") is a river in East Anglia, England. It is long and forms most of the county boundary between Suffolk to the north, and Essex to the south. It rises in eastern Cambridgeshire, passes to the east of Haverhill, through Cavendish, Sudbury, Bures, Nayland, Stratford St Mary, Dedham and flows through the Dedham Vale Area of Outstanding Natural Beauty. It becomes tidal just before Manningtree in Essex and joins the North Sea at Harwich.
Etymology and usage
The name is of ambiguous and disputed origin.
On one theory, the name Stour derives from the Celtic sturr meaning "strong". However, the river-name Stour, common in England, does not occur at all in Wales; Crawford noted two tributaries of the Po River near Turin, spelled Stura. In Germany the Stoer is a tributary of the River Elbe. According to Brewer's Britain and Ireland the Stour is pronounced differently in different cases: the Kentish and East Anglian S