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По-русски Choose the topic: Index → Syrdarya River basin morphology Water resources Water management infrastructure Syrdarya River basin morphology

Syrdarya River basin Syrdarya river forms by two major rivers: Naryn and Karadarya, to which in the middle reach joint Chirchic river and some small tributaries (Ahangaran, Keles, Arys). The length of Syrdarya from the confluence of Naryn and Karadarya rivers to the Aral Sea is 2337 km, and with Naryn river — 2790 km, basin area is 150 100 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.