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
River systems of Thailand Chao Phraya, are the most significant gulf systems in Thailand: The Bang Pakong River is a river in eastern Thailand. The river originates at the confluence of the Nakhon Nayok River and the Prachinburi River at Pak Nam Yothaka in Amphoe Ban Sang, Prachinburi Province. It empties into the Gulf of Thailand in the northeastern tip of the Bay of Bangkok. The Bang Pakong's principal tributaries are the Nakhon Nayok River and the Prachin Buri River. The watershed of the Bang Pakong is about . The Phetchaburi River is a river in western Thailand. It originates in Kaeng Krachan National