River and Groudwater Basins of the World

This map is one of the products of the internationa World-wide Hydrogeological Mapping and Assessment Programme (WHYMAP). WHYMAP is a joint Programme of UNESCO, CGMW, IAH (International Association of Hydrogeologists), IAEA (International Atomic Energy Agency) and BGR (Federal Institute for Geosciences and Natural Resources, Germany). WHYMAP collects, compiles and collates groundwater-related hydrogeological information, at continental and global scales, to aid global discussion of water issues by making underground water resources more visible.  To achieve this, it synthesizes the very large amount of hydrogeological mapping undertaken at regional and national level, and is gradually building a geographic information system (WHYMAP-GIS) in which groundwater data can be managed and visualising. Among its  main aims are: :

• Collecting information on groundwater ressources at the global scale.

• Widely diffuse this data through maps and online applications, such as global maps at the scale of 1:25 000 000, thematic maps at the 1:50 000 000 scale, small scale maps as part of papers published on the water theme and accessibility to the online application WHYMAP.

• Provide informative material to the world decision makers, in particular for the international discussions on water ressources.

  • World Water Assessment Programme (WWAP)
  • World Water Development Reports (WWDR)
  • World Water Forum
    
    

• Exchange data with other research and development programs around the world.
  
  

The printed version of this map is distributed by UNESCO, CGMW AND BGR.  An internet based maps is avaialble, which combines WHYMAP data with an information system on national, regional and continental hydrogeological maps (WHYMIS). All products and services are accessible via le programe web site http://www.whymap.org

This edition at the 1:50 000 000 scale was prepared specially for the 6th Water Forum held in Marseille, France on March 2012.