A Study on Rapid Estimation of Inundation Area and Flood Depth during Heavy Rain Disaster Using Satellite SAR

Abstract

In this paper, we report on a method for rapid extraction of inundation area and flood depth using the satellite SAR and the automated system. The inundation extent was extracted by the threshold method and the flood depth was estimated from the high resolution DEM based on the inundation extent. The method was applied to heavy rainfall disasters last year, and the properties and issues of the method were identified. In the future, we plan to build a cloud system to enable a quick response in the event of a disaster.