Quan Chi River China

The Chi River is the longest river flowing wholly within Thailand. It is 765 kilometres long but carries less water than the second longest river, the Mun. The name of the river is "Mae Si" in the Isan and Lao languages of the region, being transliterated as "Chi" in Bangkok-Thai. In wet seasons there are often flash floods in the floodplain of the Chi River basin.
  • Length: 765 km (475 mi)
  • Basin size: 49,480 km² (19,100 sq mi)
Data from: en.wikipedia.org