2000 年 44 巻 p. 301-306
Flood frequency and flood water depth were estimated using satellite remote sensing data for the development of flood hazard map and flood risk zoning map. Physiographic divisions, geological divisions, administrative districts, road, rail and drainage network digital data were used through GIS approach. Flood damaged area for each physiographic division, geologic division and administrative district were estimated. Finally, the most safe flood hazard map for flood countermeasure was constructed by considering interact effect of flood water depth and flood frequency simultaneously. Flood risk zoning map for each administrative district was developed, which provides the information about the development and preparedness of the administrative districts, road and rails, etc. on the priority basis against the flood damages.
