Shiderti

The Shiderti (Шідерті, Şıdertı; in its lower course: Karasu) is a river of Kazakhstan. It is 506 km long, and has a drainage basin of 15900 km2.

Course
The river has its source under the name Sarapan in the central part of the Kazakh Uplands, northern part of Karaganda Region. It flows roughly northwestwards and discharges into lake Shaganak (Aktogay District). The Irtysh–Karaganda Canal runs along the Shiderti river in its upper and middle course flowing in the opposite direction.