Sarygamysh Lake is located in the central part of Sarygamysh hollow. The area changes regularly depending on the flow of the collector waters from the Khorezm oasis. In the 1970s, the area of the lake was more than 1500 square kilometres; the mineralization was about 7%. By 1985, the area was doubled up to 3200 square kilometres with the mineralization of 20%. The length of the lake is 120 km; the average depth is 8.2 m. The lowest bottom of the Sarygamysh hollow marks 40.5 meters below the sea level.
The western shore of the lake is steep. The canal-collector that feds the lake flows from the east part. There are springs of mineral thermal water on the western part of the lake. During the decades, the lake changed a lot; it disappeared and reappeared several times and the fate of the lake depended exclusively on the flow of the Amu Darya River.
Sarygamysh is home for swans, flamingos, pelicans and temporary home for migratory birds. This is a wonderful place for birdwatching.