For details of the watermills powered by the river, see Stour watermills.
The River East Stour is one of the sources of the River Stour in Kent. The East Stour, 10.3 miles (16.5km) long [1]) rises on the Greensand ridge at Postling north of Hythe as a number of small streams. It then flows under the M20 motorway to continue in a westward direction: the river meanders across the Low Weald plain, passing Merstham on the way. The East Stour's confluence with the River Upper Great Stour is on both sides of Pledge’s Mill at the foot of East Hill, Ashford.