Using Multi-criteria Evaluation and GIS for Flood Risk Analysis in Informal Settlements of Cape Town: The Case of Graveyard Pond

摘要: Rural-urban migrations have contributed to the steady increase in population of Cape Town. Many migrants settled informal settlements because they cannot afford rent or buy decent housing. these are however located on marginal and often poorly drained land. Consequently, most prone flooding after prolonged rainfall. Current flood risk management techniques implemented by authorities Town City Council (CTCC) not designed support settlements. In fact, owing a lack information about levels within individual settlements, either CTCC has been uninvolved it inappropriate remedies such This study sought investigate methodology that could use improve assessment. Using case an settlement Town, this proposed integration of  community-based into Geographic Information System (GIS) can be used for addition, this  research demonstrated participatory multi-criteria evaluation (MCE) A questionnaire was collect  information. The shack outlines informal  were digitized using aerial imagery. questionnaires captured spreadsheets linked corresponding shacks GIS. Risk weights subsequently calculated pairwise comparisons each household, based their responses the  questionnaires. then mapped GIS show spatial disparities risk. Keywords : Informal Flood management. Multi-criteria Evaluation. Participation. weights.