Elevation extremes:
lowest point: Djourab Depression 160 m
highest point: Emi Koussi 3,415 m
Natural resources:
petroleum, uranium, natron, kaolin, fish (Lake Chad), gold, limestone, sand and gravel, salt
Land use:
arable land: 2.8%
permanent crops: 0.02%
other: 97.18% (2005)
Irrigated land: