Syrdarya River basin

Syrdarya River basin morphology

Syrdarya River basin

The Syrdarya river, formed by the junction of the Naryn and Karadarya rivers, is the longest river and the second largest rivers in terms of water content in Central Asia and Aral Sea basin. The length of the river is 3,019 km from the headwater (and 2,212 km from the junction point), while the catchment area is 219,000 km2. Average annual Syrdarya basin flows for the last years are 40.8 km3. Owing to unique Syrdarya water system it is feasible also to use 6.7 km3 of return waters.

Hydrographical scheme of Syrdarya divides all basin of this river on three parts:

- Upper watershed mountain area (sub-basin of Naryn, Karadarya, small tributaries and part of Chirchic), where flow is formed and the water consumption is minimal; zone of potential hydropowerresources;

- Valley of Syrdarya and part of Chirchik on proluvial and alluvial planes – main part of settlements, irrigated area and oaseses;

- Lowlands — Aral Sea coast and deltas.

Present water management system of Syrdarya River Basin provides a rational use of all water resources and represented by agreed many of hydrotechnical devices on Syrdarya River and its inflows, which guarantee transporting of water, transformation of flow in water reservoirs, conveying of water to users, generation of electricity, measuring and controlling of used water quality.