Central Asia :: Kazakhstan
Caption
Central Asia's most important cotton-growing region is concentrated in the floodplain of the Syr Darya. The floodplain is shown here as a tangle of twisting meanders and loops (image center). The darkest areas are brushy vegetation along the present course (filled with blue-green water); wisps of vegetation are also visible along flanking swampy depressions, or sloughs. An older floodplain appears as more diffuse dark vegetation (image upper left), where relict bends are overlain by a rectangular pattern of cotton fields. The straight channel of a new diversion canal can be seen along the east bank of the river. Half the river flow is controlled from reservoirs, and half from direct water take-off from canals. In contrast to the intensive agricultural use of water shown here, water control in the mountain valleys upstream is oriented more toward power generation. The river flows for 2,200 km (1,370 mi), from the Tien Shan Mountains west and northwest to the Aral Sea. Control of the river is vested in the Syr Darya Basin Water Organization, run by nations with territory in the watershed. Some of the organization's main efforts include accurate gauging of water use and repair of canals to reduce widespread water leakage. Photo courtesy of NASA.
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