The Longford River is an English artificial waterway, a distributary designed to embellish a park, that diverts water 12 miles (19 km) from the River Colne at Longford near Colnbrook to Bushy Park and Hampton Court Palace where, at both, it has outlets to the Thames, on the reaches above Teddington Lock and Molesey Lock respectively. It was built for King Charles I in 1638/39 as a water supply for Hampton Court, and water features in Bushy Park were added in 1710. Its course has been diverted (north of the A30) more than once as London Heathrow Airport has grown.