Uzbekistan’s water resources are part of the Aral Sea basin and include renewable surface and groundwater as well as return flows from drainage and wastewater.
Two major river basins shape the region: the Syr Darya in the north and the Amu Darya in the south. Separate closed basins are formed by the Kashkadarya, Zarafshan, Murgab, and Tedjen rivers.
The Amu Darya is the largest river in Central Asia. Its main flow is formed in Tajikistan before crossing Afghanistan, Turkmenistan, and Uzbekistan on the way to the Aral Sea.
Seasonal flow patterns, high losses through evaporation and irrigation, and the transboundary nature of these rivers make water resource management a strategic issue for Uzbekistan.
Source: ekomaktab.uz.