Ma River

The Ma River (Vietnamese: Sông Mã) is an Asian river that flows through northwestern Vietnam. It runs through Vietnam, Laos, and back through Vietnam before reaching the sea in the Gulf of Tonkin.

The Chu River (or the Nam Sam River in Laos), the Bi River, and the Cầu Chày River are the Ma River's main tributaries. They all flow into the Ma River in Thanh Hóa Province, North Central Vietnam. The Ma River forms the Ma River Delta (also known as the Thanh Hóa Delta), Vietnam's third largest.

The Ma River Delta was once close to Vietnam's southern border. In the 2nd century BC, it was the center of Cuu-Chan, the southern of Vietnam's two prefectures under the rule of the Nanyue.

Not only does it serve as a large source of water for hydroelectricity. Song Ma also has a number of other responsibilities, including:

• Agriculture requires water.
• Water supply for hydroelectric power plants.
• Bring a plentiful supply of seafood.
• Downstream flood prevention.
• The Ma River's most important role is as a source of abundant hydropower potential and the primary power supply unit for the surrounding communities.

This longest river in Vietnam is currently the pride of the people of the North of Vietnam.

Length: 512 km (318 mi- shared with Laos)