Chad Basin demand for ivory, but stocks have since recovered. The seasonal Korama River in the south of Niger does not reach Lake Chad. Nigeria includes two sub-basins that drain into Lake Chad. The Hadejia - Jama'are - Yobe sub-basin in the north contains the Hadejia and Jama'are rivers, which supply the Hadejia-Nguru wetlands. They converge to form the Yobe, which defines the border between Niger and Nigeria for , flowing into Lake Chad. About of water reaches Lake Chad annually. Construction of upstream dams and growth in irrigation have reduced water flow, and the floodplains are drying up. The Yedseram -
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