Tuanjie Lake at the southern edge of the Qaidam subbasin in the eastern Qarhan Playa at an elevation of above sea level. It has an area of . It lies southeast of Dabusun Lake, south of Xiezuo Lake, and west of South Hulsan Lake and is fed by the intermittent stream of the Shougong River Shōugōng Hé). Its depth usually does not exceed .
