The Kara Darya (Kyrgyz: Кара-Дарыя; Uzbek: Qoradaryo; lit.

The Kara Darya is formed by the confluence of the rivers Kara-Kulja and Tar.

[1] The upper Kara Darya flows northwest across eastern Osh Region southwest of and parallel to the Fergana Range.

It enters the Fergana Valley and Uzbek territory a few kilometres west of Özgön.

There is a dam at Kuyganyor (north of Andijan) where part of its water is diverted into the Great Fergana Canal.