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'This collection of maps has been sourced from a series of satellite images provided by NASA Goddard Space Flight Center'; see URL on the graphic.
Uploaded on Tuesday 21 Feb 2012
Lake Chad - decrease in area 1963, 1973, 1987, 1997 and 2001
Philippe Rekacewicz, UNEP/GRID-Arendal
Straddling the borders of Nigeria, Chad, Niger and Cameroon in West Africa, Lake Chad has been a source of freshwater for irrigation projects in all these countries. This graphic traces the shrinkage of Lake Chad and changes in vegetation from 1963 to 2001. It includes maps of the lake from 1963, 1973, 1987, 1997 and 2001. Climatic changes and high demands for agricultural water are responsible for the lake's shrinkage.