The Sokh River (Russian: Сох, IPA: [sɔx]) is a river in Kyrgyzstan and Uzbekistan. It takes its rise at the joint of the north slopes of Alay Mountains and Turkestan Range and ends in Ferghana Valley. In the past, Sokh River was a left tributary of the Syr Darya. But, nowadays it is entirely used for irrigation. The length of the river is 124 kilometres (77 mi) with a catchment area of 3,510 square kilometres (1,360 sq mi), and normal average discharge of 42.1 cubic metres per second (1,490 cu ft/s).