The Manych () is a river in the Black Sea–Caspian Steppe of Southern Russia. It flows through the western and central part of the Kuma–Manych Depression. In ancient times, it was known as the Lik.
A tributary of the Don, it is long, with its current source at the mouth of the Kalaus in the southwestern part of the Republic of Kalmykia. It flows through the town of Proletarsk and joins the Don in Manychskaya, east of the city of Rostov-on-Don.
Along the Manych, going downstream, there are:
Unusual drainage system
Formerly, at least in periods of high water, the Manych River would flow in two directions. The river Kalaus, when reaching the Kuma–Manych Depression at , would split. About 30% of the water would become the West Manych and flow northwest to, or toward, the Don River. The remaining water became the East Manych and flowed roughly southeast and dried up on the steppe before reaching the Caspian Sea. Sometime around 1970 a low dam was built which prevented any water from flowing into the East Manych. The East Manych is now fed by irrigation canals coming from the Kuma and Terek Rivers.
Canals
Historically (prior to the construction of the dams and irrigation channels, i.e. until 1932–1940 for the West Manych, and until 1969 for the East Manych), both rivers were intermittent. During dry years, and even during the drier parts of normal years, both Manych Rivers would consist merely of a chain of small lakes or ponds with brackish or salty water. The system usually would be fully filled with fresh water only during the spring freshet.