Saigon River South Vietnam River. Originating near Dangcun in southeastern Cambodia, it flows southward and Southeast around the eastern edge of Ho Chi Minh City (formerly Saigon) and into Ganh Rai Bay, about 225 km (140 miles) in length. At 29 km (18 miles) northeast of Ho Chi Minh City, the main river in the central plateau joins the Dong Nai River, and at the northern edge of the city, the Ben Cat River joins. Ho Chi Minh City, 72 kilometers (45 miles) above the estuary, is the most important port in Southeast Asia. It can accommodate ships with a draft of 9 meters (30 feet). There is an oil port 16 kilometers (10 miles) below Ho Chi Minh City. The Saigon River originates in southeastern Cambodia and flows southeast to Ho Chi Minh City. It passes around the city in the northeast and converges into Zhelai Bay, which is more than 225 kilometers long. It is said that Ho Chi Minh City is the most important port in Southeast Asia, which can accommodate ships with a draft of 9 meters. Others say that the Saigon River is the deepest urban freshwater river in the world, with an average depth of 25 meters, and can directly pass freighters under 100,000 tons. During the day, we can see that there are many docks and shipyards on both sides of the Straits, which are very prosperous.