期刊名称：The Journal of Sustainable Development in Africa (JSDA)
电子版ISSN：1520-5509
出版年度：2019
卷号：21
期号：3
页码：110-119
出版社：Institute of Sustainable Development in Africa
摘要：This paper utilizes a decision support-based system for systematic management of disaster to enhance capacity building and
sustainable development. Using setback and previous flood extent as the yardstick, the study area was divided into high,
moderate and low vulnerable zones. Buffer analysis, overlay techniques, flow accumulation operation and spatial search were
part of the geospatial analysis done using the ArcGIS10.5 software. The digital map depicted that the study area is situated on
a uniform level ground with the vulnerable sections located on the deepest part of the plain which is the primary reason for the
high flood events experienced in the study area. Flow accumulation zones, in addition with waste dumps which impede the free
flow of water were noted as germane factors that amplified the rate of flood susceptibility. From the spatial search conducted,
211 buildings breach the setback rule and 10,820 people could be at risk of flooding.
关键词：Environmental Problem; Flood; GIS; Support System; Sustainable Development; Ilorin Metropolis
