Lake Chad Lake Chad is a freshwater lake located in the Sahelian zone of west-central Africa. It is located in the interior basin which used to be occupied by a much larger ancient sea sometimes called Mega Chad. The lake is historically ranked as one of the largest lakes in Africa. However, its surface area varies by season and as well as from year to year. Lake Chad is mainly in the far west of Chad, bordering on northeastern Nigeria. The Chari River, fed by its tributary the Logone, provides over 90% of the lake's water, with a small amount coming from
Geography of Niger longest border is with Nigeria to the south, at 1,608 km. This is followed by Chad to the east (1,196 km), Algeria to the north-northwest (951 km), and Mali to the west (838 km). Niger also has short borders in its far southwest frontier (Burkina Faso at 622 km and Benin at 277 km) and to the north-northeast (Libya at 342 km). Geography of Niger Niger is a landlocked nation in West Africa located along the border between the Sahara and Sub-Saharan regions. Its geographic coordinates are longitude 16°N and latitude 8°E. Its area is 1.267 million square kilometers, of