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 | 
| Length | 370 kilometres (230 mi) | 
| Basin features | |
| Progression | Thimphu, 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.