The
River East Stour is one of the
tributaries of the
Great Stour in
Kent. The East Stour, 10.3 miles (16.5 km) long ) 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
Mersham on the way. The East Stour's
confluence with the Great Stour is on both sides of Pledge’s
Mill at the foot of
East Hill,
Ashford.