Turumtaykul, also spelled Turumtaikul, is a freshwater mountain valley lake in Gorno-Badakhshan Autonomous Region, in the south-east Tajikistan, about 110 kilometres (68 mi) east of the provincial capital of Khorugh. Lying in the Pamir Mountains at 4,202 m (13,786 ft) above sea level, it is 7 by 2 km (4.3 by 1.2 mi), and has an area of 900 ha (2,200 acres) with a maximum depth of 18 m (59 ft). Its most numerous fish are Sattar snowtrout and False osman. The lake forms part of the Djavshangoz Important Bird Area.