River Mole Brook, Gatwick Stream, Earlswood Brook, Pipp Brook and The Rye, which drains Ashtead. A full list of the tributaries is given in the table below. River Mole The River Mole is a tributary of the River Thames in southern England. It rises in West Sussex near Horsham and flows northwest through Surrey for to the Thames at East Molesey, opposite Hampton Court Palace. The river gives its name to the Surrey district of Mole Valley. The Mole crosses the North Downs between Dorking and Leatherhead, where it cuts a steep-sided valley, known as the Mole Gap, through the chalk. Much
Mole Valley long periods been under no overall control. Between May 2015 and May 2018, Mole Valley Liberal Democrats gained two council seats in by-elections (Holmwoods June 2015 gain from UKIP, Leatherhead North June 2016 gain from Conservatives), and one Conservative councillor defected to Beare Green Independent (May 2017). The Liberal Democrats then made a net gain of one in May 2018, pushing the Council back into no overall control. However, Conservatives continued to control the administration with the support of the Independents, with three Ashtead Independents becoming members of the Cabinet. The overall composition established in May 2018 is 20 Conservatives,