| Tyao River Tiau River | |
|---|---|
 Bridge over the Tyao river betweenRikhawdar andZokhawthar | |
 | |
| Location | |
| Country | India,Myanmar |
| State | Mizoram,Chin State |
| District | Champhai,Falam |
| Physical characteristics | |
| Source | |
| • location | Khuangphah |
| • coordinates | 23°42′45″N93°24′24″E / 23.7125°N 93.4066°E /23.7125; 93.4066 |
| Mouth | |
• location | Kaladan River |
• coordinates | 22°47′10″N93°05′45″E / 22.7861°N 93.0957°E /22.7861; 93.0957 |
| Length | 159 km (99 mi) |
Tyao River[1](orTiau River,[2]Tio River) is a 159 km (99 mi) long river that flows between theMizoram state inIndia and theChin State inMyanmar, forming part of theinternational boundary between the two countries.[2]
It rises nearKhuangphah village ofChamphai district inMizoram, India. It ultimately merges with theKaladan River (Chhimtuipui river).[2]
The twin towns ofZokhawthar in Mizoram andRikhawdar in Chin State are on the banks of the river. There is an official border crossing between the two towns.[3]