Moei River
| Moei River (แม่น้ำเมย) | |
| Thaungyin River | |
 The Moei River from the Thai border looking at the Burmese bank | |
| Countries | Thailand, Burma |
|---|---|
| States | Tak Province, Mae Hong Son Province |
| Districts | Phop Phra, Mae Sot, Mae Ramat, Tha Song Yang, Sop Moei |
| Tributaries | |
| - right | Yuam River |
| City | Mae Sot |
| Source | |
| - location | Thanon Thongchai Range, Tak Province, Thailand |
| - coordinates | TH 16°29′5″N 98°51′25″E / 16.48472°N 98.85694°E |
| Mouth | Salween River |
| - location | Sop Moei, Mae Hong Son Province, Thailand |
| - elevation | 76 m (249 ft) |
| - coordinates | TH 17°47′9″N 97°44′33″E / 17.78583°N 97.74250°ECoordinates: TH 17°47′9″N 97°44′33″E / 17.78583°N 97.74250°E |
| Length | 327 km (203 mi) |
The Moei River (Thai: แม่น้ำเมย, rtgs: Maenam Moei, IPA: [mɛ̂ːnáːm mɤːj]) 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 Salween River within the limits of Sop Moei district of Mae Hong Son Province. The river is 327 kilometres (203 mi) long.
The Yuam River joins its left bank only 7 kilometres (4 mi) before its confluence with the Salween. Many fish species inhabit its waters, including the Giant river catfish.[1]
International border
The Moei River forms the natural border line between Thailand and Burma.
The river banks often the scenario of clashes between the Tatmadaw and Karen militias.[2] Often Karen people cross the river either in order to enter Thailand as refugees or to go back to Burma.[3]