Raidāk River

Raidāk River/Wang Chhu
Relief map showing the passage of the Raidak River into the larger Brahmaputra
Location
Country
Physical characteristics
Mouth 
  location
Brahmaputra River
Length370 kilometres (230 mi)
Basin features
ProgressionThimphu, Rinpung Dzong, Chukha hydel project, Tala hydel project, Tufanganj

The Raidāk River (also called Wang Chhu or Wong Chhu in Bhutan) is a tributary of the Brahmaputra River, and a trans-boundary river. It flows through Bhutan, India and Bangladesh.