Maritime claims: none (landlocked)
Climate: tropical in south, desert in north
Terrain: broad, arid plains in center, desert in north, mountains in northwest, lowlands in south
Elevation extremes: lowest point : Djourab Depression 175 m highest point: Emi Koussi 3,415 m
Natural resources: petroleum (unexploited but exploration under way), uranium, natron, kaolin, fish (Lake Chad)
Land use: arable land: 3% permanent crops : 0% permanent pastures: 36% forests and woodland: 26% other: 35% (1993 est.)
Irrigated land: 140 sq km (1993 est.)
Natural hazards: hot, dry, dusty harmattan winds occur in north; periodic droughts; locust plagues
Environment - current issues: inadequate supplies of potable water; improper waste disposal in rural areas contributes to soil and water pollution; desertification
Environment - international agreements: party to: Biodiversity, Climate Change, Desertification, Endangered Species, Nuclear Test Ban, Ozone Layer Protection, Wetlands signed, but not ratified: Law of the Sea, Marine Dumping