TRANSBOUNDARY WATERS

There are approximately 276 transboundary river basins worldwide. While these basins cover half of the planet, it accounts for an estimated 60 percent of global freshwater flow and is home to 40 percent of the world’s population. Geographically, Europe has the largest number of transboundary basins (69), followed by Africa (59), Asia (57), North America (40), and South America (38). In addition, about 2 billion people worldwide depend on groundwater, which includes approximately 300 transboundary aquifer systems. The transboundary basins and aquifers link populations of different countries and support the incomes and livelihoods of hundreds of millions of people worldwide. It is believed that the dependence of many developing countries on an external water supply may force them to reorient their national security concerns in order to protect or preserve such availability.

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