In this study, we tested whether viewing a virtual reality (VR) video would change the awareness of evacuation behavior during a flood event through a questionnaire on a web page. The results showed that the decision time to choose the correct action was earlier when VR videos were viewed.

A strong correlation between extreme rainfall and damaged paddy area in the past period was observed and the floods may affect rice paddies when 1-d or 4-d rainfall exceeds 25 mm or 71 mm. Flood inundation and rice crop damage might be more severe in the future due to climate change than in the past period. The average rice crop damage per year is approximately two times higher for the future period than for past period, suggesting more serious rice crop damage in future due to climate change.