Abstract
This research proposed a framework to investigate the social costs/benefits and applicability of a land use regulation strategy based on flood risk information. The framework was applied to the Neya River basin and showed that the social benefits exceeded the costs due to land use regulation which prohibited the use of area inundated with rainfall events of 2-30 years return periods. The land use regulation strategy was also compared to a flood fighting strategy with water control facilities. Results showed the two strategies to be largely comparable in terms of required costs. Another investigation on the effects of the future population decrease indicated that the total benefits of land use regulation would become larger and its applicability might be improved with decreased population.
