Nubian Sandstone Aquifer System
Fossil water aquifer system in northeastern Africa
Nubian Sandstone Aquifer System
The Nubian Sandstone Aquifer System (NSAS) is the world's largest known fossil water aquifer system. It is located underground in the eastern end of the Sahara desert and spans the political boundaries of four countries in northeastern Africa. The NSAS covers over two million km2, including northwestern Sudan, northeastern Chad, southeastern Libya, and most of Egypt. Containing an estimated 150,000 km3 of groundwater, the NSAS is potentially an enormous water resource for these countries. The Great Man-Made River (GMMR) project in Libya extracts about 2.4 km3 of fresh water from it for consumption and agriculture per year.
Read on Wikipedia · Image Jaap Berk, Public domain
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