Flood Observation Map in Banten Province Using Radar Images, Case Study: Cidanau, Ciujung, Cidurian River Basin

Abstract

Indonesia experiences floods which are rarely well documented in map form. Monitoring and estimating the impact of floods at almost the same time involves using a variety of techniques, from digital maps to using detailed surveys or remote sensing techniques. However, when using remote sensing techniques, the results depend on the data acquisition time (day or night) as well as by weather conditions. However, this obstacle can be overcome by using radar satellite imagery. The purpose of this study is to describe the surface of the water bodies affected by flooding in the Cidanau-Ciujung-Cidurian River Basin from 2016 to 2020. For this case study, the Sentinel-1 SAR Band data obtained from the ESA (European Space Agency) were used as research data. Data sets are retrieved before, during or after a flood and processed using SNAP Desktop. The result will display flood conditions using RGB color as a sign between wet areas (inundated) and dry areas (not inundated).