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How did diverting the Amu Darya and Syr Darya rivers affect the Aral Sea?
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land reclamation
The Yser River flowing through reclaimed farmland in Belgium.
The diversion of the Amu Darya and Syr Darya rivers for large-scale agricultural irrigation projects, initiated by the Soviet Union to reclaim arid lands, triggered one of the world's most significant ecological disasters.123
By redirecting these primary water sources, the inflow to the Aral Sea was drastically reduced, causing the sea to shrink to a small fraction of its original volume and surface area. This collapse led to several severe consequences:13
- Environmental Degradation: The sea’s salinity levels rose sharply, destroying the local fishing industry and killing off native fish populations.12
- Toxic Pollution: As the water receded, it exposed a vast, contaminated seabed. Winds now carry toxic dust—laden with salt, pesticides, and fertilizers—across the region, causing widespread health crises, including high rates of respiratory and kidney diseases among the local population.123
- Climatic Shifts: The loss of such a massive body of water resulted in a harsher local climate, characterized by more extreme seasonal temperature fluctuations.23
The diversion of these rivers serves as a stark reminder that land reclamation efforts must prioritize sustainable water management to prevent irreversible damage to ecosystems and human health.3