Abstract
This study focuses on the assessment of flood-vulnerable areas in the Minraleng watershed, Maros Regency, where the area experiences floods every year. Spatial analysis in the Geographic Information System (GIS) environment has been applied to estimate flood-vulnerable zones using six relevant physical factors, such as rainfall intensity, slope, Elevation, distance from the rivers, land use and soil type. The relative importance of physical factors has been compared in paired matrices to obtain weight values using the Spatial Multi-Criteria Evaluation (SMCE) method. The result showed that the areas located in Camba sub-district had the high vulnerability. The region with a high and very high vulnerability to flood were spread with an area of 436 ha (0,84 %) and 6.168 ha (11.8%).
Highlights
Flood is the number one hydrometeorological disaster in Indonesia, in the last ten years floods have become the most disasters in Indonesia
This study focuses on the assessment of flood-vulnerable areas in the Minraleng watershed, Maros Regency, where the area experiences floods every year
Based on the results of the field survey and data collection on flood events in the Minraleng watershed, 30 flood events are located at various levels of vulnerability, from 30 flood events, 25 are located in the high hazard class and very high, while 5 other events are located under high class and very high
Summary
Flood is the number one hydrometeorological disaster in Indonesia, in the last ten years floods have become the most disasters in Indonesia. During 2018, the National Disaster Management Agency recorded 679 flood events, out of a total of 2572 disaster events. In South Sulawesi Province there were 24 recorded flood events [1]. The worst floods in South Sulawesi occurred in 2019 where based on BNPB data, floods, landslides and tornadoes were spread across 13 districts / cities. Determining flood-vulnerable areas is very important for decision makers for planning and managing activities. Determination of flood-vulnerable areas can be done by mapping. Flood vulnerability map is a tool for flood vulnerability assessment that is used to understand the level of vulnerability that is harmed.
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