Geylang River (Malay: Sungai Geylang; Simplified Chinese: 芽茏河) is a canalised river flowing from Geylang to Kallang, in the Central Region of Singapore. With the formation of the Marina Reservoir after the completion of the Marina Barrage in 2008, the river now forms part of the reservoir.Geylang River begins at Ubi as Geylang Canal, continues southwards under Eunos Road 5 and Sims Avenue, and turns westwards after Geylang Road and Lorong 40 Geylang, but flows southwards again near Guillemard Road, before turning westwards again after the junction of Old Airport Road and Dunman Road, through Mountbatten Road and Stadium Way.