Lake Chad is the fourth largest lake in Africa and is located in the Sahel zone of west-central Africa between Chad, Cameroon, Nigeria, and Niger. The surface area of the lake depends on the water level. When the water rises to above 930 feet (280 m) above sea level, the lake has an area of roughly 6,875 square miles (17,800 sq. km). Lake Chad is a very important asset to the region, because of its contribution to the region's hydrology and because of the diversity of flora and fauna that it attracts. The Lake Chad region is known for it's important role in trans-Saharan trade and for the various important archaeological discoveries that have been made here.
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