Hydrogeology of Madagascar
Africa Groundwater Atlas >> Hydrogeology by country >> Hydrogeology of Madagascar
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Compilers
Dr Kirsty Upton and Brighid Ó Dochartaigh, British Geological Survey, UK
Please cite this page as: Upton & Ó Dochartaigh, 2016.
Bibliographic reference: Upton, K. & Ó Dochartaigh, B.É. 2016. Africa Groundwater Atlas: Hydrogeology of Madagascar. British Geological Survey. Accessed [date you accessed the information]. https://earthwise.bgs.ac.uk/index.php/Hydrogeology_of_Madagascar
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The Africa Groundwater Atlas is hosted by the British Geological Survey (BGS) and includes information from third party sources. Your use of information provided by this website is at your own risk. If reproducing diagrams that include third party information, please cite both the Africa Groundwater Atlas and the third party sources. Please see the Terms of use for more information.
Geographical Setting
General
Estimated Population in 2013* | 22,924,851 |
Rural Population (% of total) (2013)* | 66.2% |
Total Surface Area* | 581,795 sq km |
Agricultural Land (% of total area) (2012)* | 71.2% |
Capital City | Antananarivo |
Region | Eastern Africa |
Border Countries | none - Indian Ocean. |
Annual Freshwater Withdrawal (2013)* | 16,500 Million cubic metres |
Annual Freshwater Withdrawal for Agriculture (2013)* | 97.8% |
Annual Freshwater Withdrawal for Domestic Use (2013)* | 1.4% |
Annual Freshwater Withdrawal for Industry (2013)* | 0.8% |
Rural Population with Access to Improved Water Source (2012)* | 35.4% |
Urban Population with Access to Improved Water Source (2012)* | 78.2% |
* Source: World Bank
Climate
More information on average rainfall and temperature for each of the climate zones in Madagascar can be seen at the Madagascar climate page.
These maps and graphs were developed from the CRU TS 3.21 dataset produced by the Climatic Research Unit at the University of East Anglia, UK. For more information see the climate resource page.
Surface water
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Soil
Land cover
Geology
The geology map on this page shows a simplified version of the geology at a national scale (see the Geology resource page for more details). More information is available in the report UN (1988) (see References section, below).
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Hydrogeology
The hydrogeology map below shows a simplified overview of the type and productivity of the main aquifers at a national scale (see the Hydrogeology map resource page for more details).
More information on the hydrogeology of Madagascar is available in the report United Nations (1988) (see References section, below).
Madagascar is also covered by the SADC hydrogeological map and atlas (2010), available through the SADC Groundwater Information Portal.
Groundwater management
There was information on more than 3,000 water boreholes across the country in 2009. Geological logs for these boreholes are not available. There was no information about large diameter wells.
References
Other references with more information on the geology and hydrogeology of Madagascar may be accessed through the Africa Groundwater Literature Archive.
Online resources
SADC Groundwater Information Portal
General information on surface water and groundwater resources in SADC
Documents
United Nations. 1989. Groundwater in Eastern, Central and Southern Africa: Madagascar. United Nations Department of Technical Cooperation for Development.
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