Lake Chad Lake Chad Lake Chad (French: Lac Tchad) is a historically large, shallow, endorheic lake in Africa, which has varied in size over the centuries. According to the "Global Resource Information Database" of the United Nations Environment Programme, it shrank by as much as 95% from about 1963 to 1998, but "the 2007 (satellite) image shows significant improvement over previous years." Lake Chad is economically important, providing water to more than 30 million people living in the four countries surrounding it (Chad, Cameroon, Niger, and Nigeria) on the edge of the Sahara. It is the largest lake in the Chad Basin.
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