Kölukök is located about south-southeast of the administrative center Kochkor in the western foothills of the Terskey Ala-too. The approximately 2.5 km long lake with SSE-NNW orientation has an area of 1.22 km² and is located at an altitude of 1970 m. The Ukök, outflow of the lake, initially flows in a north-westerly and later in a northerly direction through the mountains before reaching a plateau, flowing through the town of Kochkor and flowing into the Chu River on the right.