Geography
The river rises in two headstreams in the Tian Shan Mountains in Kyrgyzstan and eastern Uzbekistan—the Naryn River and the Kara Darya—and flows for some 2,212 kilometres (1,374 mi) west and north-west Uzbekistan and southern Kazakhstan to the remains of the Aral Sea. The Syr Darya drains an area of over 800,000 square kilometres (310,000 sq mi), but no more than 200,000 square kilometres (77,000 sq mi) actually contribute significant flow to the river. Its annual flow is a very modest 37 cubic kilometres (30,000,000 acre·ft) per year—half that of its sister river, the Amu Darya.
Along its course, the Syr Darya irrigates the most fertile cotton-growing region in the whole of Central Asia, together with the towns of Kokand, Khujand, Kyzylorda and Turkestan.
An extensive system of canals, many built in the 18th century by the Uzbek Khanate of Kokand, spans the regions the river flows through. Massive expansion of irrigation canals during the Soviet period, to irrigate cotton fields, caused ecological damage to the area, with the river drying up long before reaching the Aral Sea which, as a result, has shrunk to a small remnant of its former size. With millions of people now settled in these cotton areas, it is not clear how the situation can be rectified.
Read more about this topic: Syr Darya
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