Geosfera Indonesia
Vol 6 No 3 (2021): GEOSFERA INDONESIA

Assessment of Flood Hazard Mapping Based on Analytical Hierarchy Process (AHP) and GIS: Application in Kencong District, Jember Regency, Indonesia

Muhammad Asyroful Mujib (Department of Geography Education, Universitas Jember, Jl. Kalimantan 37 Jember, East Java, 68121, Indonesia)
Bejo Apriyanto (Department of Geography Education, Universitas Jember, Jl. Kalimantan 37 Jember, East Java, 68121, Indonesia)
Fahmi Arif Kurnianto (Department of Geography Education, Universitas Jember, Jl. Kalimantan 37 Jember, East Java, 68121, Indonesia)
Fahrudi Ahwan Ikhsan (Department of Geography Education, Universitas Jember, Jl. Kalimantan 37 Jember, East Java, 68121, Indonesia)
Elan Artono Nurdin (Department of Geography Education, Universitas Jember, Jl. Kalimantan 37 Jember, East Java, 68121, Indonesia)
Era Iswara Pangastuti (Department of Geography Education, Universitas Jember, Jl. Kalimantan 37 Jember, East Java, 68121, Indonesia)
Sri Astutik (Department of Geography Education, Universitas Jember, Jl. Kalimantan 37 Jember, East Java, 68121, Indonesia)



Article Info

Publish Date
22 Dec 2021

Abstract

Flood is one of the most frequent hydrometeorological disasters which leads in economic losses. The first step in flood disaster mitigation efforts is mapping vulnerable areas. Kencong District frequently affected by the annual flooding event. This study aims to assess flood hazard mapping by integrating the AHP method and Geographic Information System. This study used a descriptive quantitative approach through the correlation matrix of the AHP model for each physical environmental factor. These factors include slope, altitude, distance from the river, soil type, Topographic Wetness Index (TWI), and Curvature. Furthermore, with the Geographic Information System (GIS), the weighted overlay stage was carried out to obtain the results of flood-prone areas. Based on the AHP analysis, the most significant factors in determining flood-prone areas were the distance from rivers, slopes, and TWI. The results of flood-prone areas mapping were divided into five classes: from deficient 0.02%, low 4.26%, medium 37.11%, high 51.89%, and very high 6.72%. Validation of GIS mapping results with data in the field has an AUC value of 84%, which indicates that the prediction of the AHP-GIS model is perfect in flood-prone areas mapping in the Kencong District. The integration of AHP method and Geographic Information System in flood hazard assessment were able to produce a model to evaluate the spatial distribution of flood-prone areas. Keywords : Flood Hazard Mapping; Multi-criteria decision analysis; AHP Model; GIS; Jember Copyright (c) 2021 Geosfera Indonesia and Department of Geography Education, University of Jember This work is licensed under a Creative Commons Attribution-Share A like 4.0 International License

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Journal Info

Abbrev

GEOSI

Publisher

Subject

Earth & Planetary Sciences Environmental Science Social Sciences

Description

Geosfera Indonesia : | ISSN: 2598-9723 (Print)| ISSN: 2614-8528 (Online) is published by Department of Geography Education, University of Jember, Indonesia. We accept mainly research-based articles related to geography. Geosfera Indonesia welcomes contributions in such areas of current analysis in: ...