Piyain River
Piyain River in Zero Point Jaflong, Sylhet
Location
Countries	India, Bangladesh
District	Sylhet
Physical characteristics
Source
• location	Umgat river of Assam
Mouth
• location	Surma River
Length	145 kilometres (90 mi)

Piyain River a trans-boundary river of India and Bangladesh.^[1] It is a tributary of the Surma river, which is originates from the Umngot of Meghalaya. The river enters Bangladesh through Sylhet district.

The origin and flow

The length of the river is 145 km.^[2] Piyain river has emerged from the river om or Umagat river or Assam.^[3]

Gallery

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  Piyain River at Zero Point Jaflong
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  Piyain River at Chhatak Upazila
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  Piyain River. The picture was taken on the way to Bisnakandi