... Cambodia to Vietnam. At Phnom Penh, the river meets the Tongle Sap river, then splits into Tien river and Hau river before entering the border of Vietnam and continues to branch into 9 tributaries ... part of the Mekong river to the sea, the MD accepts yearly all the water flood volume of the basin. About 1.2 to 1.9 million ha of land, mainly in the North parts of the MD such as the LongXuyen ... list of the largest rivers in the world and is longest river in southeastern Asia. From its source in Tibet, the river flows to the South China Sea through Yunnan, China, forms the border partly...