ZAMBEZI RIVER BASIN Catherine Lecesse
What country benefit the greatest from the Zambezi River Basin? TANZANIA
ANGOLA MALAWI ZAMBIA
ZIMBABWE NAMIBIA BOTSWANA
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
Malawi Namibia Zimbabwe Botswana Tanzania
Mupata Lungue Bungo Luangwa
Kabompo Cuando Chobe Barotse
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/â€Ž www.diva-gis.org/ www.geocommons.com/â€Ž
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.