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Suryanto Suryanto
Department of Environmental Science, Universitas Sebelas Maret
Earth & Planetary Sciences Education Environmental Science Social Sciences

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FLOOD HAZARD MAPPING BASED ON MULTI-CRITERIA SPATIAL ANALYSIS IN THE SAMIN WATERSHED, INDONESIA Sofyan Sholeh; Chatarina Muryani; Suryanto Suryanto
GeoEco Vol 10, No 1 (2024): GeoEco January 2024
Publisher : Universitas Sebelas Maret (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/ge.v10i1.82973

Abstract

The Samin watershed which is located in the Mount Lawu area is vulnerable to flood disasters due to human activities. This research was carried out by inventorying parameter data to create a flood disaster vulnerability map using a GIS-based multi-criteria spatial approach. The seven parameters used in flood disaster analysis are Elevation, Slope, Distance from River, Drainage density, Topographic Wetness Index (TWI), Landuse, Rainfall, Type of Soil, Geology. The weight of each parameter is determined using the Analytical Hierarchy Process (AHP) which has the driving factors for flood disasters. The flood hazard map was obtained using a weighted overlay method and grouped into five classes, namely very low, low, medium, high and very high. The results of the analysis show that 11.36% of the study area has a very low hazard, 27.10% has a low hazard, 39.57% has a medium hazard, 20.43% has a high hazard and 1.54% has a very high hazard.
Co-Authors Chatarina Muryani Sofyan Sholeh