Continental shelf: 200 m (depth) or to depth of exploitation;
Exclusive economic zone: 200 nm;
Territorial sea: 30 nm
_#_Disputes: demarcation of international boundaries in Lake Chad, the lack of which has led to border incidents in the past, is completed and awaiting ratification by Cameroon, Chad, Niger, and Nigeria; Nigerian proposals to reopen maritime boundary negotiations and redemarcate the entire land boundary have been rejected by Cameroon
_#_Climate: varies—equatorial in south, tropical in center, arid in north
_#_Terrain: southern lowlands merge into central hills and plateaus; mountains in southeast, plains in north
_#_Natural resources: crude oil, tin, columbite, iron ore, coal, limestone, lead, zinc, natural gas
_#_Land use: arable land 31%; permanent crops 3%; meadows and pastures 23%; forest and woodland 15%; other 28%; includes irrigated NEGL%
_#_Environment: recent droughts in north severely affecting marginal agricultural activities; desertification; soil degradation, rapid deforestation
_*People #_Population: 122,470,574 (July 1991), growth rate 3.0% (1991)