Abstract
For the present urban residents, it is hard to percept inundation risk. In implementing inundation risk management, public involvement is indispensable, because rainfall should be close to urban residents. As the precondition for public involvement, it is necessary to improve the conditions that make it difficult for urban residents to recognize rainfall related risks. In this study, the authors conducted a questionnaire survey of inundation risk cognition on urban residents and members of NPOs, which concern urban wet weather flow management. As the result, it is important to provide appropriate information for risk cognition, such as critical parts where inundation damage is high in urban area. Cognizing inundation risk, urban residents will utilize information and take part in some practice to reduce inundation risk. In order to realize public involvement, it is necessary to integrate a scheme for risk cognition into risk management program.
