Natural hazards are indeed counted as the most critical challenges facing our world, represented in floods, earthquakes, volcanoes,
hurricanes, and forest fires. Among these natural hazards, the flash flood is regarded the most frequent. In this work, we utilized
two Sentinel-2 satellite images, before and after the flash flood, SRTM and photos captured by using a helicopter. +is paper aims
at three prime objectives. Firstly, the flood influence is determined on the city of Ras Ghareb, Egypt, based on analyzing free
satellite data (Sentinel-2 images). Secondly, fuzzy the analytical hierarchy process (FAHP) method and a geographical information
system (GIS) are integrated for flood risk analysis and evaluation in the flood-prone area. Finally, such a flood vulnerability map is
used as an index to assist the decision-makers prepare for probable flooding. FAHP is preferable as it can cater to the uncertainties
in data and analysis. As a result, FAHP is appropriate to determine the flood-vulnerable area in cities especially due to the
matching with the most destroyed areas identified by the change detection between the two Sentinel-2 images. +en, the decisionmaker can depend on Sentinel-2 images to estimate the flood influence through a regional scale or applying the FAHP on cities
susceptible to flash floods in case of unavailable satellite images to contribute in establishing an early warning system enough to the
evacuation of the risky areas. |
