Surkhan River

…tributary to the Amu Darya—the Surkhan and Sherabad, followed by the Zeravshan and Kashka—contribute little flow, for the last two trickle into nothing in the desert. The Syr Darya, the second largest river in Uzbekistan, forms there by the confluence of the Naryn and Qoradaryo rivers.

…by the Kofarnihon (Kafirnigan) and Surkhan rivers. After leaving the highland zone, the river veers to the northwest to cross the arid Turan Plain, where it forms the boundary between the Karakum Desert to the southwest and the Kyzylkum Desert to the northeast. The Amu Darya loses much of its…