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[[Africa Groundwater Atlas Home | Africa Groundwater Atlas]] >> [[Additional resources | Resource pages]] >> Hydrogeology Maps of Africa
 
[[Africa Groundwater Atlas Home | Africa Groundwater Atlas]] >> [[Additional resources | Resource pages]] >> Hydrogeology Maps of Africa
  
Please cite page as: Africa Groundwater Atlas. 2019. Hydrogeology Maps of Africa. British Geological Survey. Accessed [date you accessed the information]. ''Weblink''.
 
  
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  This page is in development. Please check back soon for updates.
  
  
Many maps have been produced over the years that show aspects of the hydrogeology and groundwater resources of Africa. These maps are at various scales and cover areas from a single small river catchment or local aquifer up to the entire continent. This page provides a summary of these maps, including a list of known maps at different scales; and details of selected maps.
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==Africa Hydrogeological Maps at Continental Scale==
  
==List of Groundwater and Hydrogeological Maps in Africa==
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There are a number of different international maps showing aspects of the hydrogeology and groundwater resources of the whole continent of Africa. These are at scales of between 1: 5 million and 1: 12.5 million. Some of these maps are only available as hard copy/on paper; others are available to view digitally online and/or to download as image files that can be printed; and a few are available in digital format that can be used in GIS.  
 
 
This table provides a summary of known maps that describe aspects of the hydrogeology or groundwater resources in Africa. It is not comprehensive but includes most of the continental, regional and national scale maps, and many at sub-national scale.
 
 
 
The table includes information on: the map scale; publication date; publishing organisation; editors; format and links to more information.
 
 
 
Many of the listed maps can be viewed online and sometimes downloaded as scanned images; some can be viewed in interactive online map portals; and some are also available to download as digital files that can be used in GIS.
 
 
 
  Access the [[List Groundwater Maps Africa |'''list of groundwater maps in Africa''']].
 
 
 
 
 
==Africa-wide Hydrogeological and Groundwater Maps - Continental Scale==
 
 
 
There are a number of different maps showing aspects of the hydrogeology and groundwater resources of the whole continent of Africa. These are at scales of between 1: 5 million and 1: 12.5 million.  
 
 
 
These maps show different aspects of hydrogeology: for example,  geology (e.g. lithology); aquifer flow and storage type; aquifer productivity; or recharge amounts. Different maps may be useful for different applications.
 
 
 
Some of these maps are only available as hard copy/on paper; others are available to view digitally online and/or to download as image files that can be printed; and a few are available in digital format that can be used in GIS.  
 
  
 
===[https://www.bgs.ac.uk/ British Geological Survey]: Quantitative Groundwater Maps of Africa===
 
===[https://www.bgs.ac.uk/ British Geological Survey]: Quantitative Groundwater Maps of Africa===
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A series of quantitative groundwater maps for Africa was developed by the British Geological Survey as part of the [http://www.bgs.ac.uk/research/groundwater/international/africanGroundwater/maps.html '''Quantitative Groundwater Maps for Africa'''] project (MacDonald et al., 2010, 2012).   
 
A series of quantitative groundwater maps for Africa was developed by the British Geological Survey as part of the [http://www.bgs.ac.uk/research/groundwater/international/africanGroundwater/maps.html '''Quantitative Groundwater Maps for Africa'''] project (MacDonald et al., 2010, 2012).   
  
This project produced three new digital '''groundwater maps for Africa''', at a nominal scale of 1:20 million. They are:
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This project produced three new digital '''groundwater maps for Africa''', based on a [[Geology | '''geology''' map]] of Africa at 1:5 million scale (Persits et al., 2002, Furon and Lombard 1964). The three groundwater maps are:
  
 
; Groundwater (aquifer) productivity
 
; Groundwater (aquifer) productivity
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; Depth to groundwater  
 
; Depth to groundwater  
  
These three maps can be freely downloaded in digital form as a 5 km resolution grid (xyz tab-delimited text file), which can be used in GIS. They are also available as high resolution PDF files.  
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These three maps can be freely downloaded in digital form as a 5 km resolution grid (xyz tab-delimited text file), which can be used in GIS. They are also available as high resolution PDF files. [http://www.bgs.ac.uk/research/groundwater/international/africangroundwater/mapsDownload.html '''Download the Africa groundwater maps here'''].
 
 
  [http://www.bgs.ac.uk/research/groundwater/international/africangroundwater/mapsDownload.html '''Download the Africa-wide quantitative groundwater maps here''']
 
  
 
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More information on these groundwater maps can be found in these references:
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More information on these maps can be found in these references:
 
   
 
   
 
MacDonald, A M, Bonsor, H C, Ó Dochartaigh, B É, and Taylor, R G. 2012. [http://nora.nerc.ac.uk/id/eprint/17892/ Quantitative maps of groundwater resources in Africa]. Environmental Research Letters, 7 (2), 024009. 10.1088/1748-9326/7/2/024009  
 
MacDonald, A M, Bonsor, H C, Ó Dochartaigh, B É, and Taylor, R G. 2012. [http://nora.nerc.ac.uk/id/eprint/17892/ Quantitative maps of groundwater resources in Africa]. Environmental Research Letters, 7 (2), 024009. 10.1088/1748-9326/7/2/024009  
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Gilbrich, W H, and Struckmeier, W F. 2014. [http://unesdoc.unesco.org/images/0023/002310/231066e.pdf 50 Years of Hydro(geo)logical Mapping Activities]. German Federal Institute for Geosciences and Natural Resources (BGR) and UNESCO International Hydrological Programme (UNESCO-IHP).
 
Gilbrich, W H, and Struckmeier, W F. 2014. [http://unesdoc.unesco.org/images/0023/002310/231066e.pdf 50 Years of Hydro(geo)logical Mapping Activities]. German Federal Institute for Geosciences and Natural Resources (BGR) and UNESCO International Hydrological Programme (UNESCO-IHP).
  
==Regional Scale Hydrogeological and Groundwater Maps of Africa==
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==Africa Hydrogeological Maps at Regional Scale==
  
 
===SADC Hydrogeological Map===
 
===SADC Hydrogeological Map===
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A hydrogeological map of the SADC region, with an accompanying atlas, were developed in 2010 under the SADC Regional Groundwater Management Programme to provide an overview of the groundwater resources in the SADC region. The map is available to view in the [https://www.un-igrac.org/ IGRAC] [https://apps.geodan.nl/igrac/ggis-viewer/viewer/sadcgip/public/default SADC Groundwater Information Portal]. This portal also gives access to borehole data and other associated groundwater data for the region.
 
A hydrogeological map of the SADC region, with an accompanying atlas, were developed in 2010 under the SADC Regional Groundwater Management Programme to provide an overview of the groundwater resources in the SADC region. The map is available to view in the [https://www.un-igrac.org/ IGRAC] [https://apps.geodan.nl/igrac/ggis-viewer/viewer/sadcgip/public/default SADC Groundwater Information Portal]. This portal also gives access to borehole data and other associated groundwater data for the region.
  
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==Africa Hydrogeological Maps at Country Scale==
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[[File:SADCIGRACGWInfoPortal.PNG | center| 500px| SADC Groundwater Resources in Africa Portal]]
 
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==Country Scale Hydrogeological Maps of Africa==
 
  
 
Many countries in Africa, but not all, have national scale hydrogeological maps, but these are often relatively old and have not been updated with new information collected in recent years. For most countries, national hydrogeological maps are available only as hard copy/in paper form.  
 
Many countries in Africa, but not all, have national scale hydrogeological maps, but these are often relatively old and have not been updated with new information collected in recent years. For most countries, national hydrogeological maps are available only as hard copy/in paper form.  
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As part of this Atlas, we have developed new country-scale hydrogeology maps for each country in Africa that will be available to freely download as digital, GIS-enabled files.  
 
As part of this Atlas, we have developed new country-scale hydrogeology maps for each country in Africa that will be available to freely download as digital, GIS-enabled files.  
  
===[[Africa Groundwater Atlas Hydrogeology Maps | Africa Groundwater Atlas Country Hydrogeology Maps]]===
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===Africa Groundwater Atlas Country Hydrogeology maps===
  
This Atlas presents new hydrogeology maps for each of 48 countries in Africa, at 1:5 million scale. More information about how these maps were developed is on the [[Africa Groundwater Atlas Hydrogeology Maps | '''Africa Groundwater Atlas country hydrogeology maps''']] page.
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This Atlas presents new hydrogeology maps for each of 48 countries in Africa, at 1:5 million scale. These maps have been developed from the Africa-wide [http://www.bgs.ac.uk/research/groundwater/international/africanGroundwater/maps.html quantitative groundwater maps] developed by BGS in 2010. The new maps combine key hydrogeological information to show:
  
Most of these country maps (currently 38 maps) are available to [https://www.bgs.ac.uk/africagroundwateratlas/downloadGIS.html '''download as digital, GIS-enabled shapefiles'''].
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*'''aquifer type''' (based on the geological environment and groundwater flow/storage type); and
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*'''aquifer productivity''' (relative aquifer productivity, or groundwater potential).  
  
These country maps were developed from the Africa-wide [http://www.bgs.ac.uk/research/groundwater/international/africanGroundwater/maps.html quantitative groundwater maps] developed by BGS in 2010. The new maps combine key hydrogeological information to show:
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The country maps also summarise national geology at the same scale.  
  
*'''aquifer type''' (based on the geological environment and groundwater flow/storage type); and
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More information about the country maps is on the [[Africa Groundwater Atlas Hydrogeology Maps | '''Africa Groundwater Atlas country hydrogeology maps''']] page.
*'''aquifer productivity''' (relative aquifer productivity, or groundwater potential).  
 
  
The country maps also summarise national geology at the same scale, with geological categories that reflect significant hydrogeological units (MacDonald et al. 2010).
 
 
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===WHYMIS - Hydrogeological maps at country scale===
 
===WHYMIS - Hydrogeological maps at country scale===
  
The [http://www.whymap.org/whymap/EN/Home/whymap_node.html WHYMAP] (World-wide Hydrogeological Mapping and Assessment Programme) aims to provide groundwater information across the world using maps and map applications. Part of the programme is [https://geoviewer.bgr.de/mapapps/resources/apps/whymap/index.html?lang=en&tab=whymap_gwr WHYMIS] (the World-wide Hydrogeological Map Information System), which provides digital scans of many '''national hydrogeological maps''' across Africa, freely available to download as pdf files.  
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[http://www.whymap.org/whymap/EN/Home/whymap_node.html WHYMAP] provides digital scans of '''national hydrogeological maps''' across Africa through its [https://geoviewer.bgr.de/mapapps/resources/apps/whymap/index.html?lang=en&tab=whymap_gwr WHYMIS] application. These national maps are also indexed in the [http://www.bgs.ac.uk/africagroundwateratlas/index.cfm Africa Groundwater Literature Archive].
 
 
These national maps are also indexed in the [http://www.bgs.ac.uk/africagroundwateratlas/index.cfm Africa Groundwater Literature Archive].
 
  
  

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