| Qizilsu | |
|---|---|
 | |
| Location | |
| Country | Tajikistan |
| Physical characteristics | |
| Mouth | Panj |
• coordinates | 37°22′20″N 69°22′53″E / 37.3723°N 69.3815°E |
| Length | 230 km (140 mi) |
| Basin size | 8,630 km2 (3,330 sq mi) |
| Basin features | |
| Progression | Panj→ Amu Darya→ Aral Sea |
The Qizilsu (Tajik: Қизилсу) or Kyzylsu (Russian: Кызылсу) is a river that rises on the southern slopes of the Vakhsh Range in the north-east of Tajikistan's Khatlon Region and runs south-west until joining the Panj on the border with Afghanistan. The river is 230 kilometres (140 mi) long and has a basin area of 8,630 square kilometres (3,330 sq mi).[1] It merges with the Yakhsu (Akhshu) as a major left tributary south of the town of Kulob. It irrigates the cotton-growing Qizilsu Valley between Kulob and Panj in the south-east of Khatlon Province. It is not the Kyzyl-Suu River that rises in Kyrgyzstan and flows through Tajikistan as Surkhob, then Vakhsh, following a course north-west of Qizilsu.