Rivers Network

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Lake Chad (8)

Web Mapping development : Rivers Network

Source RAMSAR sites :https://rsis.ramsar.org

Source "Protected Areas" :World Database on Protected Areas (WDPA), a join project of IUCN and UNEP - March 2018

Source Dams Data Base - GRanDv1 : Lehner, B., C. Reidy Liermann, C. Revenga, C. Vorosmarty, B. Fekete, P. Crouzet, P. Doll, M. Endejan, K. Frenken, J. Magome, C. Nilsson, J.C. Robertson, R. Rodel, N. Sindorf, and D. Wisser. 2011. Global Reservoir and Dam Database, Version 1 (GRanDv1): Dams, Revision 01. Palisades, NY: NASA Socioeconomic Data and Applications Center (SEDAC). SEDAC

Source Rainfall :WorldClim Version 2 - Mean average rainfall (mm) -period 1970-2000 resolution 5 minutes (approx 100 km2)

Source Population Data Base: Center for International Earth Science Information Network - CIESIN - Columbia University. 2017. Gridded Population of the World, Version 4 (GPWv4): Population Count, Revision 10. Palisades, NY: NASA Socioeconomic Data and Applications Center (SEDAC) Accessed 23 Feb 2018. These data were treated afterwards by Rivers Network to fit with river basin limits and formated for web maps purposes. The density ranking is based on the DN values from SEDAC data base.

Posted by Chukwuma Umolu in LinkedIn Group "riversnetwork.org"

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Click on "read more" for further information and to explore the Lake Chad on Google Earth..

As big as the Caspian Sea as recently as 8,500 years ago, Lake Chad is now Africa's fourth largest lake, with a maximum extent of 25,000km². One of three major wetlands located within the Sudano-Sahelian zone (the others being the Niger River Inner Delta in Mali, and the Sudd Swamps in Sudan), Lake Chad is rather shallow and has been particularly susceptible to the increasing variability and irregularity of rainfall during the last 40 years.

Recent North Africa

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