Open AccessPotential distribution of water in Malang city based on Multitemporal Sentinel 2A image data
Author(s) -
Abdul Wahid Hasyim,
I N S Wijaya,
D A Setyono
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/916/1/012018
Subject(s) - geography , rainwater harvesting , flooding (psychology) , socioeconomics , distribution (mathematics) , altitude (triangle) , city area , urban area , water resource management , forestry , environmental science , ecology , mathematics , psychology , mathematical analysis , geometry , sociology , psychotherapist , biology
Malang City is one of the cities in East Java with the status of a second-level city, with Surabaya City as the first-level city. Malang City also has various advantages that can attract many people outside the city to live in Malang City. As time goes by, Malang City experiences an increase in built-up land area, which is considered to be the cause of increased flooding in Malang City. This study attempted to identify the areas vulnerable to potential inundation (flooding) using several influencing variables, consisting of data on land cover, slope, land altitude, intensity of rainfall, and NDWI. This study employed the SMCE (Spatial Multi-Criteria Evaluation) method to obtain data on the distribution of potential areas for rainwater puddles (floods) in Malang City. Based on the analysis results, most of Malang City in 2019 is dominated by areas categorized as vulnerable with a percentage of 71% or an area of 7,827.21 hectares. At the same time, the remaining 29%, or an area of 3,130.10 hectares, is an area included in the safe category from potential puddles. The percentage of this vulnerable area, when compared to 2014, increased by 6%.