| Chatkal | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Kyrgyzstan, Uzbekistan |
| Length: | 223km (139miles) |
| Mouth: | Chirchiq |
| Mouth Location: | Lake Charvak |
| Mouth Coordinates: | 41.5856°N 70.0992°W |
| Basin Size: | 7110km2 |
| Tributaries Left: | Tüz-Ashuu, Ters, Oqbuloq |
| Tributaries Right: | Chandalash |
The Chatkal (Russian: Чаткал) is a river of Jalal-Abad Region, Kyrgyzstan and Tashkent Region in Uzbekistan. It is the left source river of the Chirchiq in the Syr Darya basin. In its upper course it is called Karakulja.[1]
The length of the river is 223km (139miles), with a basin area of 7110km2.[2] It originates at the point where Chatkal Range adjoins Talas Ala-Too Range. Its largest tributaries are the Aksuu, Kokuybel, Avletim, Ters and Nayza (Oqbuloq) from the left, and the Karakysmak, Beshterek, Chandalash and Köksuu from the right.[1]
The average rate of water flow near the mouth is 122m3/s, with a maximum 920m3/s.