| dc.description.abstract | This study uses a weighted overlay method by considering several
parameters that affect the level of.flood vulnerability in Das Deli, North Sumatra
Province. Some of the parameters considered include rainfall, slope and land
elevation, soil type, land use, and river density. Each parameter is given a weight
and value according to each classification. The overlay process uses ArcGIS 10.8.l
sofnvare, which utilizes Remote Sensing and Geographic Information Systems
(GIS) to analyze and present geographical data digitally. The results showed that
almost all parts of Medan City around the Deli watershed area have a high level of
vulnerability to flooding. Slope, topographic wetness index and land use are the
main factors causingflooding. Slopes with a range of0-8% in most areas of Medan
City are classified as very prone to flood inundation. This is due to the flat
topography of the area and the high density of river flow, making the area
vulnerable to becoming a water catchment area when it rains and increasing the
risk of flooding. For topographic wetness index a value greater than 14 is very
vulnerable, and the use of residential land and open land is categorized as very
prone to flooding. Some areas, such as the Sei Putih II Village area, Medan Petisah
District, have a flood inundation percentage of 41. I 6% of their total area, which is
the area with the highest flood inundation percentage. For the area with the largest
flood inundation area is Tanjung Rejo Village, Sunggal District with a flood
inundation area of 67. 05 Ha. With this flood-prone map, efforts to manage and
mitigate floods in Medan City can be carried out. Information on vulnerable
locations can be used to take appropriate preventive and countermeasures, such as
building adequate drainage, regulating land use, and controlling river flows .. | en_US |
