Source "Protected Areas" :World Database on Protected Areas (WDPA), a join project of IUCN and UNEP - Oct 2017
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). GRanDv1
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.