The River Roding is a river in England that rises near Dunmow, flows through Essex and forms Barking Creek as it reaches the River Thames in London. Before 1965, the river was entirely in Essex.The river leaves Dunmow and passes through or near a group of villages in Essex known collectively as the Rodings, as they all end with the suffix 'Roding'. After Chipping Ongar, the river flows under the M25 motorway by Passingford Bridge and Abridge.