Chad Basin depth of . Due to heavy pumping, since the start of the 1980s the water levels in both aquifers has been lowered, and some wells no longer function. There is a third, much lower, aquifer in Bima Sandstones that lies at a depth of . Both the current and historical areas of the basin and the mega-basin contain concentrations of fossils. Fossil-fuels deposits in the area are estimated to exceed a trillion barrels in reserves. The Lake Chad Basin Commission was set up in 1964 by Cameroon, Chad, Niger and Nigeria, the four countries that contain parts of Lake Chad.
Multinational Joint Task Force Multinational Joint Task Force The Multinational Joint Task Force (MNJTF) is a combined multinational formation, comprising units, mostly military, from Benin, Cameroon, Chad, Niger, and Nigeria. It is headquartered in N'Djamena and is mandated to bring an end to the Boko Haram insurgency. The task force was first organised as a solely Nigerian force in 1994, during the administration of Sani Abacha, to "checkmate banditry activities and to facilitate free movement" along its northern border. In 1998 it was expanded to include units from neighbouring Chad and Niger with the purpose of dealing with common cross-border security issues in the