Course
The length of the river is 145 km. Originating from the Umngot, the river enters Bangladesh through the Jaflong area of Gowainghat, where it divides into two parts. ==Gallery==
Gallery
Jaflong Sylhet Bangladesh (11).JPG Piyain River (3).jpg Piyain River (6).jpg Piyain River (9).jpg|Piyain River at Zero Point Jaflong Piyain River at Chhatak.JPG|Piyain River at Chhatak Upazila Piyain River, Sylhet, Bangladesh.jpg|Piyain River. The picture was taken on the way to Bisnakandi == References ==