2001 Volume 45 Pages 43-48
Small mountainous river basins have a strong possibility that heavy rainfall will cause river flood disaster and sediment disaster. In such areas, the local severe rain occurs in the narrow range and the water level of the river comes up rapidly because of the steep slope. So it is important that inhabitants have the discernment for judgment of the risk of a heavy-rain calamity and refuge at just the appropriate time based on the circumference situation. In this study, we grasp the actual condition of the inhabitants' cognition involving heavy-rainfall hazards in small mountainous basins based on the investigation carried out in Kiryu City, Gunma Prefecture, from the viewpoint of the understanding of the information about the heavy-rainfall hazard on a flood hazard map.
