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Rivers Network

Sharing Knowledge - Raising Awareness - Bridging River's Advocates

Upper Orange (2)

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.

Senqu/Orange river rises in the mountain region of Lesotho, traversing in a generally western direction nearly 2000km to the Atlantic Ocean and being joined half way by the Vaal river coming in from the north-east. Although the mountain region of Lesotho constitutes only 5% of the the total catchment of the Senqu/Orange river, it provides about 50% of the total catchment run-off.

Recent South Africa