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.
Constitution of Chad Rights. The constitutional endorsement of the Universal Declaration of Human Rights is an aspect Chad has in common with many national constitutions: among African countries, it is endorsed by Benin, Burkina Faso, Burundi, Cameroon, Cape Verde, Comoros, Congo-Brazzaville, Côte d'Ivoire, Equatorial Guinea, Ethiopia, Gabon, Guinea, Guinea-Bissau, Mali, Mauritania, Niger, Rwanda, Senegal and Tanzania. A problem is represented by the implementation of the human rights norms, as there is a legal vacuum due to the lack of the necessary provisions in the Criminal Code, which has to be amended so that national legislation is put into line with the international human