Nation-wide flood risk assessment using inundation level model and MODIS time-series imagery

Real-time flood inundation mapping can be useful in emergency response efforts but is limited in capturing a wide area for assessment. In this paper, the authors suggest an improved extraction method of surface water with a simplified algorithm. The purpose of this study was to accurately estimate a flood area based on the spatial distribution of a nation-wide flood using a flood inundation level (FIL) model and a modified LSWI (MLSWI) from near real-time images from MODIS time series. This flood risk assessment study focused on reducing the susceptibility of nation-wide risk damage and improved the accuracy of extracting a vulnerable inundation area.