The Aksu (, Aqsu; ) is a river of the Balkhash-Alakol Basin, Kazakhstan. It originates in the Dzungarian Alatau Mountains near the border with China and flows into Lake Balkhash. The Karatal, the Aksu and the Lepsa also enter from the south-east, and the Ayaguz from the north-east In Turkic languages, the name 'ak+su' literally means "clean/white water". The Aksu is one of the main rivers of the historic region of Zhetysu. It is long, and has a drainage basin of .Аксу (река в Казах. ССР), Great Soviet Encyclopedia
Course The river flows north from the border with China before turning north-westward, passing by Matay and then northward when it reaches the Saryesik-Atyrau Desert, a large sand desert south of Lake Balkhash. The river empties into Lake Balkhash just west of the Lepsy River on its southern side. Aksu freezes over in December and stays icebound until March. Because of irrigation, the river's flow into Lake Balkash is limited.
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