Climate:
arid to semiarid; mild, wet winters with hot, dry summers along
coast; drier with cold winters and hot summers on high plateau;
sirocco is a hot, dust/sand-laden wind especially common in summer
Terrain:
mostly high plateau and desert; some mountains; narrow,
discontinuous coastal plain
Elevation extremes:
lowest point: Chott Melrhir -40 m
highest point: Tahat 3,003 m
Natural resources:
petroleum, natural gas, iron ore, phosphates, uranium, lead, zinc
Land use: arable land: 3.22% permanent crops: 0.25% other: 96.53% (2001)
Irrigated land:
5,600 sq km (1998 est.)
Natural hazards:
mountainous areas subject to severe earthquakes; mudslides and
floods in rainy season
Environment - current issues:
soil erosion from overgrazing and other poor farming practices;
desertification; dumping of raw sewage, petroleum refining wastes,
and other industrial effluents is leading to the pollution of rivers
and coastal waters; Mediterranean Sea, in particular, becoming
polluted from oil wastes, soil erosion, and fertilizer runoff;
inadequate supplies of potable water
Environment - international agreements: party to: Biodiversity, Climate Change, Climate Change-Kyoto Protocol, Desertification, Endangered Species, Environmental Modification, Hazardous Wastes, Law of the Sea, Ozone Layer Protection, Ship Pollution, Wetlands signed, but not ratified: none of the selected agreements
Geography - note: second-largest country in Africa (after Sudan)