A shallow lake on the borders of Chad, Niger, and Nigeria in north central Africa. Its size varies seasonally from c.10,360 sq. km (4,000 sq. miles) to c.25,900 sq. km (10,000 sq. miles).
A shallow lake on the borders of Chad, Niger, and Nigeria in north central Africa. Its size varies seasonally from about 4,000 square miles (10,360 sq km) to about 10,000 square miles (25,900 sq km).