River systems of Thailand divides into two major branches, the " Tiền Giang" (Front River) and "Hậu Giang" (Back River). These in turn enter the South China Sea through nine estuaries. The following are the principal tributaries of Mekong River which flow through Thailand (tributaries entirely outside the Thai border not shown). The Mekong drains a considerable portion of northeast Thailand. In terms of Thai territory drained, it is second only to the Chao Phraya system. The Salawin River rises in Tibet (Tibetan: རྒྱལ་མོ་རྔུལ་ཆུ།) after which it flows through Yunnan, where it is known as the "Nujiang" River (), although either name can be
River Roding through Ilford and Barking. The River Roding through Ilford project is a government backed scheme to improve amenities along this stretch of the river. After Barking the tidal section is known as Barking Creek, which flows into the Thames at Creekmouth, where the Barking Barrier acts as a flood defence. In Essex the river forms part of the boundary between the district of Epping Forest and borough of Brentwood. The river marks the southernmost part of the boundary between the London Borough of Newham and the London Borough of Barking and Dagenham. Ilford takes its name from "Ilefort", "ford on