Flood Hazard Mapping in Bandung Regency Based on Multi-Criteria Decision Analysis (MCDA) with AHP Method

Riki Purnama Putra; Rena Denya Agustina; Seni Susanti; Muhammad Minan Chusni; Emiliya Novitasari

doi:10.12928/irip.v6i2.10386

Authors

Riki Purnama Putra Institut Teknologi Bandung
Rena Denya Agustina UIN Sunan Gunung Djati Bandung
Seni Susanti UIN Sunan Gunung Djati Bandung
Muhammad Minan Chusni UIN Sunan Gunung Djati Bandung
Emiliya Novitasari Institut Teknologi Bandung

DOI:

https://doi.org/10.12928/irip.v6i2.10386

Keywords:

AHP, Flood Risk, Spatial Analysis

Abstract

Flooding is a natural disaster that can harm various parties, both harming nature and also harming humans. Floods can certainly hinder various human activities, both social and economic. Various causes of flooding can be caused by two main factors, namely natural factors and human factors. The natural factors in question are caused by nature, such as high-intensity rain, while the human factors are caused by humans, such as massive development and lack of drainage and humans' bad attitude towards the environment. This research aims to determine the probability of flooding in the Bandung Regency area. The research method used uses the Analytical Hierarchy Process (AHP) method based on Multi Criteria Decision Analysis (MCDA) using eight main factors, namely; (1) NDVI; (2) TWI; (3) Land Use; (4) Rainfall; (5) Slopes; (6) Elevation; (7) Distance from Road; and (8) Distance from River. Then the probability results are formed into a flood risk map for the Bandung Regency area with validation carried out using the ROC curve. The results obtained are that there are four risk categories, including; (1) Low Risk; (2) Quite Risk; (3) High Risk; and (4) Extreme Risk. The Bandung Regency area near Bandung City has the most High Risk to Extreme Risk, while outside that area has an average of Low Risk to Quite Risk. In addition, the validation results by comparing the obtained maps with the flood maps that occurred in 2002–2022 obtained an average ROC curve percentage of 76.4%, and these results show that the flood risk hazard map for Bandung Regency is valid.

Author Biographies

Riki Purnama Putra, Institut Teknologi Bandung

Master of Geodesy and Geomatics Engineering, Faculty of Earth Sciences and Technology, Institut Teknologi Bandung, Indonesia

Rena Denya Agustina, UIN Sunan Gunung Djati Bandung

Department of Physics Education, Faculty of Tarbiyah and Teacher Training, UIN Sunan Gunung Djati Bandung, Indonesia

Seni Susanti, UIN Sunan Gunung Djati Bandung

Department of Physics Education, Faculty of Tarbiyah and Teacher Training, UIN Sunan Gunung Djati Bandung, Indonesia

Muhammad Minan Chusni, UIN Sunan Gunung Djati Bandung

Department of Physics Education, Faculty of Tarbiyah and Teacher Training, UIN Sunan Gunung Djati Bandung, Indonesia

Emiliya Novitasari, Institut Teknologi Bandung

Master of Geodesy and Geomatics Engineering, Faculty of Earth Sciences and Technology, Institut Teknologi Bandung, Indonesia

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