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 -
Chad–Cameroon Petroleum Development and Pipeline Project human trafficking. Oil exploitation is estimated at a potential 1.5 billion barrels, and Chinese companies are currently developing an oil refinery and another pipeline in the country. The Tchad Oil Transportation Company (TOTCO) manages the pipeline within Chad that is owned by the country. TOTCO is incorporated in Tchad, and is a joint venture between Chad and the Upstream Consortium. The Republic of Cameroon has been ruled by President Paul Biya since November 6, 1982. A relatively peaceful and stable nation, Cameroon is a republic with a multiparty presidential regime. Although there are presidential elections every seven years, there are