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🌊 The Aral Sea's Missing Water

Trace how irrigation diverted two rivers, transformed the Aral Sea, and produced a partial recovery in its northern basin.

4
lessons
~20 min
to learn
Adults
level
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What you’ll learn

  1. A sea fed by two riversExplain how the Aral Sea depended on river inflow and why irrigation withdrawals changed its water budget.A large inland sea was sustained by two rivers whose water was increasingly diverted for agriculture.
  2. When the water budget brokeTrace the ecological and social effects of shoreline retreat, salinity, dust, and the loss of the fishing economy.As water disappeared, a connected lake ecosystem became saltier, dustier, and less able to support communities.
  3. A partial repairDescribe why the Kok-Aral Dam improved the Northern Aral while leaving difficult basin-wide trade-offs.Targeted restoration helped one smaller basin, but shared rivers and unequal water demands limit a whole-sea recovery.
  4. What the Aral leaves behindUse the Aral Sea as a framework for evaluating environmental collapse and restoration across an entire watershed.The fastest collapse is a warning to measure water, ecosystems, health, livelihoods, and governance together.

Questions this course answers

Why did diverting the Amu Darya and Syr Darya shrink the Aral Sea?

In this arid basin, the sea depended on river inflow to balance strong evaporation.

What happened to the exposed seabed after the Aral Sea receded?

Dry sediments, salts, and agricultural residues could be lifted as dust from the former lakebed.

Why did the Kok-Aral Dam help the Northern Aral Sea?

The dam matched limited inflow to the Northern Sea, allowing its level and salinity to improve.

What is the most useful lesson for assessing another water project?

The Aral crisis links rivers, farms, ecosystems, health, jobs, and downstream decisions.

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