River and groundwater basins and transboundary aquifer systems in Africa

This map depicts the African portion of the Transboundary Aquifers of the World Map 2015 and the Rivers and Groundwater Basins of the World Map of 2012. In the more arid regions of Africa the boundaries and size of surface water drainage basins and underlying groundwater systems rarely coincide – and the more rational basis for IWRM in such areas is the groundwater basin Source: BGR, IGRAC & UNESCO