Abstract
In an evacuation, it is important to properly identify risks and quickly secure personal safety by evacuating through the safest route. The purpose of this study was to verify the effectiveness of methods for evacuating inundated areas via the shortest possible route. Using the results of inundation simulations for 56 different rainfall patterns, evacuation methods were evaluated for each inundation pattern using network analysis. The evaluation results showed that methods for evacuating inundated areas via the shortest possible route was more effective for larger inundation areas patterns, and that there were locations in each pattern where the use of evacuation centers outside the city was effective. In addition, the locations where the effectiveness of methods for evacuating inundated areas via the shortest possible route was high were distributed throughout the city, and in particular, the locations where the frequency of inundation risk was high were highly effective. In the future, safe evacuation routes should be considered according to the inundation risk in district disaster prevention plans.
