1. Institute for Water Studies, University of the Western Cape, Bellville, South Africa
2. Division of Geography, School of Geography, Archaeology and Environmental Studies, University of the Witwatersrand, Johannesburg, South Africa
3. Department of Geography, Environmental Studies, and Tourism, The University of the Western Cape, Bellville, South Africa
4. Department of GIS and Remote Sensing, University of Fort Hare, Alice, South Africa