ANALISIS TINGKAT KERAWANAN BANJIR DI WILAYAH DAS DOLAGO KECAMATAN PARIGI SELATAN MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS

Geographic Information System (GIS) is for identification and mapping of areas that have the
potential for flooding. Floods often occur in watersheds (DAS), flash floods that occurred in Parigi
Selatan District on Sunday July 12, 2020, which resulted in piles of pieces of wood hitting the houses
of 7 residents missing and 12 houses that were threatened with loss due to overflowing water.This
study aims to determine the level of flood vulnerability using GIS in South Parigi District, Parigi
Moutong Regency. This research is expected to provide an overview and information regarding the
level of flood vulnerability that occurs in the Dolago watershed area. The method used is the method
of scoring and weighting. Scoring and weighting are carried out on several parameters, namely
rainfall, slope, soil type, and land use. Flood susceptibility zoning is obtained by scoring and
weighting methods based on these parameters.The results of the analysis that has been carried out in
the Dolago watershed area, Parigi Selatan District, Parigi Moutong Regency, it can be seen that the
area around the Dolago watershed has a very prone area to flooding which covers 150.41 Ha or
0.85% of the total area contained in the middle part of the watershed, while for flood-prone areas, an
area of 3,881 ha or 21.83% of the total area is located in the downstream part of the watershed, it is
quite prone to an area of 13,712 ha or 77.12% spread over the upstream part of the Dolago
watershed.
Keywords: Geographic Information System (GIS), flooding, scoring, weighting