Arid and semi-arid regions of the world have one thing in common: a water shortage. In these areas, there is always more land than water. It is not possible to provide all the land in an arid basin with a water supply sufficient to grow crops, and at the same time provide for all existing historic and naturally established water uses. The Aral Sea Basin developed a natural equilibrium between precipitation and evapotranspiration during the 14 000 years (Micklin 1991) since the last filling of the Sea. In that long period there was sufficient water in the established equilibrium of the basin to provide for natural vegetation, with enough left over to make a sea. The recent introduction of irrigation into, and adjacent to, the Aral Sea Basin has resulted in a significant change in the natural hydrologic equilibrium of the area.
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- Conjunctive Water Management for the Aral Sea Basin
Lyman S. Willardson
- Springer Netherlands
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