Bounded in the northeast by the dead dunes of the Kanem region, its water levels fluctuate due to the presence of the Great Barrier, which separates it into northern and southern basins.  
When water levels are high this lake's water is diverted through a string of basins called the Bahr el-Ghazal, or Soro.  Bounded in the northeast by the dead dunes of the Kanem region, its water levels fluctuate due to the presence of the Great Barrier, which separates it into northern and southern basins.  Fed by the Chari and Komadugu Yobe tributaries, it is the fourth largest lake in Africa.  FTP, what is this lake found at the conjunction of the borders of Niger, Nigeria, Cameroon, and its namesake country?
When water levels are high this lake's water is diverted through a string of basins called the Bahr el-Ghazal, or Soro.  
Lake Chad