Geography of Zimbabwe

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Geography of Zimbabwe
Zi-map.png

LocationZimbabwe.svg
Continent Africa
Region Southern Africa
Coordinates 20°S 30°E / 20°S 30°E / -20; 30Coordinates: 20°S 30°E / 20°S 30°E / -20; 30
Area Ranked 63rd
 • Total 390,757 km2 (150,872 sq mi)
Coastline 0 km (0 mi)
Borders 3,066 km
(Botswana 813 km, Mozambique 1231 km, South Africa 225 km, Zambia 797 km)
Highest point Inyangani
2,592 m
Lowest point junction of the Runde and Save rivers. 162 m
Longest river Zambezi River
2,650 km
Largest lake Lake Kariba
7,770 km2
Zimbabwe map of Köppen climate classification.
Satellite image of Zimbabwe
Topography of Zimbabwe
Zimbabwe's cities, main towns, selected villages and archaeological sites, rivers and its highest point

Zimbabwe is a landlocked country in southern Africa lying wholly within the tropics. It straddles an extensive high inland plateau that drops northwards to the Zambezi valley where the border with Zambia is and similarly drops southwards to the Limpopo valley and the border with South Africa. The country has borders with Botswana 813 km, Mozambique 1,231 km, South Africa 225 km, Zambia 797 km and almost meets Namibia at its westernmost point.

Climate[edit]

The climate is markedly varied by altitude. There is a dry season, including a short cool season during the period May to September when the whole country has very little rain, the rainy season is typically a time of heavy rainfall from November to March. The whole country is influenced by the Intertropical Convergence Zone during January; in years when it is poorly defined there is below-average rainfall and a likelihood of serious drought in the country, as happened in 1983 and 1992. When it is well defined rainfall is average or well above average, as in 1981 and 1985.

Terrain[edit]

Much of the country is high plateau with higher central plateau (high veld) forming a watershed between the Zambezi and Limpopo river systems, the flattish watershed region is part of an ancient etchplain called the African Surface covers large swathes of the continent.[1][2] While the African Surface occupy the higher ground, spurs and small interfluves a younger "post-African" surface occupy lower positions with occasional rock domes, koppies and tors protruding rolling or plain landscape. The Limpopo and the lower Zambezi valleys are broad and relatively flat plains, the eastern end of the watershed terminates in a north-south mountain spine, called the Eastern Highlands.[1] The northeast-southwest oriented central uplands have been uplifted in geologically recent times (Late Pliocene or Pleistocene) deviating the watercourse of upper Zambezi River that used to flow into the Limpopo River to the east to its current outlet at the Mozambique Channel.[3][4] The northeast-southwest upland and watershed follows the axis of an epeirogenic flexure.[3]

Elevation extremes:
lowest point: junction of the Runde and Save rivers 162 m
highest point: Mount Nyangani 2,592 m

Natural resources: coal, chromium ore, asbestos, gold, nickel, copper, iron ore, vanadium, lithium, tin, diamond, platinum group metals

Land use:
arable land: 10.49%
permanent crops: 0.31%
other: 89.20% (2011)

Irrigated land: 1,735 km² (2003)

Total renewable water resources: 20 km3 (2011)

Natural hazards: droughts; floods and severe storms are rare

Environment – current issues: deforestation; soil erosion; land degradation; air and water pollution; the black rhinoceros herd – once the largest concentration of the species in the world – has been significantly reduced by poaching; poor mining practices have led to toxic waste and heavy metal pollution

Environment – international agreements: party to: Biodiversity, Climate Change, Desertification, Endangered Species, Law of the Sea, Ozone Layer Protection signed, but not ratified: none of the selected agreements

Hydrology: The country is divided into six drainage basins. The largest are the Zambezi and the Limpopo. Western parts of Matabeleland connect to the Okavango inland drainage basin through the Nata river. Most of southern Mashonaland and adjacent parts of Masvingo drain through the Save river into the Indian Ocean. Two smaller drainage basins cover parts of Manicaland, and drain into the Indian Ocean through Mozambique, these are the Pungwe river to the north and the Buzi river to the south. Sediment transport has been studied for rivers in Zimbabwe using the HBV hydrology transport model.

Table 1.

Rainfall and land use suitability options in Zimbabwe's natural regions

Natural region

Rainfall

Main land use type:

  1. Above 1050 mm/annum with some precipitation in all months of the year Afforestation, fruit, tea, coffee and intensive livestock production
  2. 750–1000 mm/annum seasonally confined with well-defined dry season Large scale intensive crop and livestock production
  3. 650–800 mm/annum with regular mid-season dry spells Livestock production with fodder crops. Marginal production of maize, tobacco and cotton
  4. 450–650 mm/annum with periodic seasonal drought and severe rainy season dry spells Livestock production and drought resistant crops
  5. Too low and erratic for even drought resistant fodder and grain crops Extensive livestock and/or game ranching.[5]

Extreme points[edit]

This is a list of the extreme points of Zimbabwe, the points that are farther north, south, east or west than any other location.

References[edit]

  1. ^ a b Römer, Wolfgang (2010). "Multiple planation surfaces in basement regions: Implications for the reconstruction of periods of denudation and uplift in southern Zimbabwe". Geomorphology. 114: 199–212. 
  2. ^ Burke, Kevin; Gunnell, Yanni (2008). The African Erosion Surface: A Continental-Scale Synthesis of Geomorphology, Tectonics, and Environmental Change over the Past 180 Million Years. The Geological Society of America. ISBN 978-0-8137-1201-7. 
  3. ^ a b Moore, A.E. (1999). "A reapprisal of epeirogenic flexure axes in southern Africa". South African Journal of Geology. 102 (4): 363–376. 
  4. ^ Goudie, A.S. (2005). "The drainage of Africa since the Cretaceous". Geomorphology. 67: 437–456. 
  5. ^ Source: CSO (1997, 144)

 This article incorporates public domain material from the CIA World Factbook website https://www.cia.gov/library/publications/the-world-factbook/index.html.

External links[edit]

Wikimedia Atlas of Zimbabwe