Land boundaries:
total: 4,047 km
border countries: Benin 773 km, Cameroon 1,690 km, Chad 87 km, Niger
1,497 km
Coastline:
853 km
Maritime claims: territorial sea: 12 nm exclusive economic zone: 200 nm continental shelf: 200-m depth or to the depth of exploitation
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
Elevation extremes:
lowest point: Atlantic Ocean 0 m
highest point: Chappal Waddi 2,419 m
Natural resources:
natural gas, petroleum, tin, iron ore, coal, limestone, niobium,
lead, zinc, arable land
Land use: arable land: 31.29% permanent crops: 2.96% other: 65.75% (2001)
Irrigated land:
2,330 sq km (1998 est.)
Natural hazards:
periodic droughts; flooding