Far North Region, Cameroon Logone rises west of the territory and flows north to form most of the border between the Far North and Chad. It eventually meets the Chari, which also rises in Chad. The Chari forms the remainder of the Chad-Cameroon border beginning at Kousséri before emptying into Lake Chad. These rivers all follow a tropical regime, fluctuating between high water in the wet season (May to September) and low water in the dry season (October to April). At the height of the dry season, many of the waterways disappear completely or else diminish to a mere trickle. The Logone all but
Chad–Nigeria relations the 1980s. Most religious violence was domestic in origin, but Nigerian police arrested a few Libyans, and Nigerian apprehension of Libyan infiltration through Chad intensified. Nigeria's 1983 economic austerity campaign also produced strains with neighboring states, including Chad. Nigeria expelled several hundred thousand foreign workers, mostly from its oil industry, which faced drastic cuts as a result of declining world oil prices. At least 30,000 of those expelled were Chadians. Despite these strains, however, Nigerians had assisted in the halting process of achieving stability in Chad, and both nations reaffirmed their intention to maintain close ties. In May 2014, in