Abstract
This paper aims to study an expression of flood risk information owing to prompt recognition of flood risk and preparedness for flood. First, an attitude survey of flood was done in high risk area of flood and covariance structure analysis and evaluation of flood hazard map were executed. According to the result, three kinds of flood risk information, flood hazard map, probability expression of return period, and expression of risk measure, were made and were shown to the residents. As a result, it was made clear that recognition of flood risk and preparedness for flood were promoted according to a characteristic of each expression. Furthermore, probability expression of return period or expression of risk measure was added to flood hazard map to make use of a characteristic of each expression. Consequently, understanding and reliability o f flood hazard map were improved.
