The lake Sudochye (Sudowin) - the largest vnutricletocny the water of the Amu Darya. As long as the river is full-flowing, its two branches Raushan and Guzyak fed Sudochye, which was connected to the Aral sea through the channel. At present, the water has gone for 150 km, and the lake has shallowed and broken up into several smaller ones.