The Salween River (also known as the Nu and Thanlwin) is the longest undammed river in mainland Southeast Asia. From its headwaters in Tibet to its estuary in Myanmar, it remains wild and relatively untouched, flowing through remote and pristine areas, including China's Three Parallel Rivers UNESCO World Heritage Site.

In which country is the Irrawaddy river located?

Irrawaddy River, Burmese Ayeyarwady, principal river of Myanmar (formerly Burma), running through the centre of the country. Myanmar's most important commercial waterway, it is about 1,350 miles (2,170 km) long.

Which river separates Thailand from Myanmar?

The Moei River forms a portion of the border between Thailand and Myanmar. The river is the scene of clashes between the Tatmadaw and Karen militias.