IGRAC 2014. Transboundary Aquifers of the World. Update 2014. UNESCO/WMO IGRAC.
IGRAC has been founded to promote the acquisition and processing of groundwater data and to facilitate the exchange of groundwater knowledge for the benefit of all those who have a stake in groundwater. More information: www.un-igrac.org.
River and Groundwater Basins of the World 1 : 50 000 000. Special edition map for the 6th World Water Forum, Marseille/France, ed. 2012. BGR/UNESCO, Hannover/Paris.
The World-wide Hydrogeological Mapping and Assessment Programme (WHYMAP) provides data and information about the major groundwater resources. The programme compiles data on groundwater from national, regional and global sources, and visualises them in maps, web map applications and services. The generated products provide information on quantity, quality and vulnerability of the groundwater resources on earth and help communicating groundwater related issues to water experts as well as decision makers and the general public. More information and products:www.whymap.org.
Hydrogeological map of Africa at 1/10 M Scale. Projet SIG-Afrique (BRGM) (includes Map of 'Main Transboundary Aquifers of Africa')
BRGM 2008. Hydrogeological map of Africa at 1/10 M Scale. Projet SIG-Afrique.
This map was produced in the framework of the GIS-Africa Network project (2003-2005). See also UNECE Assessments:www.unece.org/index.php?id=3026
The Second Assessment provides a comprehensive overview of the status of transboundary waters in the European and Asian parts of the UNECE region, covering more than 140 transboundary rivers, 25 transboundary lakes, about 200 transboundary groundwaters and 25 Ramsar Sites or other wetlands of transboundary importance.