Lake Manasarovar is a freshwater lake in the Tibet Autonomous Region of China. 940 kilometres (580 mi) from Lhasa. To the west of it is Lake Rakshastal; to the north is Mount Kailash.
Lake Manasarovar lies at 4,590 metres (15,060 ft) above mean sea level, a relatively high elevation for a large freshwater lake on the mostly saline lake-studded Tibetan Plateau. Lake Manasarovar is relatively round in shape with the circumference of 88 kilometres (55 mi). Its depth reaches a maximum depth of 90 m (300 ft) and its surface area is 320 square kilometres (120 sq mi). It is connected to nearby Lake Rakshastal by the natural Ganga Chhu channel. Lake Manasarovar is near the source of the Sutlej River which is the easternmost large tributary of the Indus. Nearby are the sources of the Brahmaputra River, the Indus River, and the Karnali River (Ghaghara), an important tributary of the Ganges River.
Lake Manas Sarovar overflows in to lake Rakshastal which is a salt water endothermic. These lakes used to be part of Sutlej River basin and got separated due to tectonic activity. Lake Manas Sarovar can be connected to the Ganga River basin through a fifteen km long tunnel to divert its water for easy availability to Hindus of India who considers its water as sacred.