Moei River The Moei River forms the border between Thailand and Burma. The river is the scene of clashes between the Tatmadaw and Karen militias. Often Karen people cross the river either in order to enter Thailand as refugees or to go back to Burma. Moei River The Moei River (, , , ) is a tributary of the Salween River. Unlike most rivers in Thailand, the Moei River flows north in a northwest direction. It originates in Phop Phra District, Tak Province, flowing then from south to north across Mae Sot, Mae Ramat, and Tha Song Yang Districts, finally entering the
Shweli River motorcycles and household goods from China. More recently, Chinese hybrid rice called "sinn shweli" has been introduced by the military authorities to the local farmers as part of the opium eradication drive, most of the crop to be exported back to China. The Shweli I Dam was put into operation on the river in 2008. It is the first of three planned dams on the main stem. Shweli River Shweli River (; ) is a river in Myanmar (Burma). Also known as Nam Mao in Shan and Lung Chuan Chiang(龙川江) in Chinese, it forms part of the boundary between Burma