The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XLII-4/W12
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-4/W12, 147–154, 2019
https://doi.org/10.5194/isprs-archives-XLII-4-W12-147-2019
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-4/W12, 147–154, 2019
https://doi.org/10.5194/isprs-archives-XLII-4-W12-147-2019

  26 Feb 2019

26 Feb 2019

GEOSPATIAL TECHNIQUES USE FOR ASSESSMENT OF VULNERABILITY TO URBAN FLOODING IN BUJUMBURA CITY, BURUNDI

E. Niyongabire and H. Rhinane E. Niyongabire and H. Rhinane
  • Faculty of Sciences, University Hassan II of Casablanca, Morocco

Keywords: Urban flooding, Vulnerability Index, AHP, WLC, Bujumbura, Burundi

Abstract. The rate of urbanization growth in tropical areas, particularly in African cities, coupled with a gap in the knowledge of vulnerability and coping capacities increases the flood-related risk in diverse communities. This study aims to evaluate the factors of vulnerability to flooding and to develop a vulnerability index in Bujumbura city, Burundi. To this end, both physical and socio-economic parameters accountable for flood vulnerability have been integrated with a geospatial analysis process based on the Analytic Hierarchy Process (AHP) and Weighted Linear Combination (WLC) methods. The resulting vulnerability index shows that low-income households and their local infrastructures are the most vulnerable to flooding. Another finding reveals that higher vulnerability is due to settlements located in flood-prone areas with unplanned land use and ill-structured development planning.