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ZAMBEZI RIVER BASIN Catherine Lecesse


What country benefit the greatest from the Zambezi River Basin? TANZANIA

ANGOLA MALAWI ZAMBIA

ZIMBABWE NAMIBIA BOTSWANA

MOZAMBIQUE


METRICS Assumptions: • All rainfall within a sub-basin is evenly distributed • All population within a sub-basin is evenly distributed • Population has equal access to rainfall

Analysis: • • •

Population of each country within the Zambezi River Basin Rainfall by sub-basin Rainfall per national person within each sub-basin

Where does the population have the greatest access to water?


The Zambezi River Basin covers 1.37 million sq. km, reaching eight countries. It is divided into thirteen sub-basins.


The Sub-Basins of the Zambezi River Basin


Rainfall by Sub-Basin About 90% of run-off from the catchment areas and subtributaries occurs in less than six months of the year.

Rainfall by Sub-Basin (mm)

655 – 786 786 – 917 917 – 1048 1048 – 1179 1179-1310


METRICS Steps Taken: 1. Population Ratio = (country pop. in sub-basin) / (total pop of sub-basin) 2. Sub-Basin Rainfall by nationality = (Country/Sub-Basin pop Ratio) * (annual rainfall in subbasin)


Rainfall per Person, by Sub-Basin Rainfall per person, by within Country Sub-basin within a Country

0.000000 - 71.090424 71.090425 - 193.715271 193.715272 - 518.262329 518.262330 - 768.992920 768.992921 - 1,193.883423


Data Sub-Basin Mozambique

Zambezi Delta Upper Zambezi

Angola

Zambia

Malawi Namibia Zimbabwe Botswana Tanzania

1,053.96

904.06

320.94

Tete

287.95

38.78

31.94

Shire

57.92

1.23

948.88

Mupata Lungue Bungo Luangwa

116.97

410.13

402.78

334.01 6.74

Luanginga

768.99

991.78

518.26

439.74

Kariba

58.24

Kafue

1,042.00

Kabompo Cuando Chobe Barotse

Average

0.53

351.64

22.48

624.76

17.12

1,193.88

431.71

193.72

12.30

7.54

731.37

71.09

441.28

479.65

334.43 41.69

44.28

342.69

44.28 116.97


Country Rankings for Highest Rainfall (mm) per person within the Zambezi River Basin


Conclusion Malawi, Zambia, and Zimbabwe have the highest concentration of people within the Zambezi River Basin. Highest Rainfall per capita is for the Zambia population within the Kabompo Sub-Basin. Lowest Rainfall per capita is for the Zimbabwe population within the Tete Sub-Basin. Zambia and Angola have the highest and secondhighest average rainfall per person rate within the Zambezi River Basin, respectively. Namibia and Botswana have the lowest overall rain fall rates, smallest populations, and lowest average rainfall per person rates.


Sources data.worldbank.org/‎ www.diva-gis.org/ www.geocommons.com/‎

Beck, L. and Bernauer, T. (2011, August 31). CIS: How Will Combined Changes in Water Demand and Climate Affect Water Availability in the Zambezi River Basin? Institute for Environmental Decisions. Retrieved from http://www.ied.ethz.ch/newsletter/newsletter10/re search/ir The World Bank. (2010). The Zambezi River Basin: A Multi-Sector Investment Opportunities Analysis. Vol. 4: Modeling, Analysis and Input Data. Washington, DC: The World Bank.

Spring 2013 GIS Final Project  

An Analysis of rainfall per capita by country within the Zambezi River Basin

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