抄録
In the Toga River which runs through Omote Rokko area in Kobe, the sudden water level rising by local heavy rain was often seen in several years. On July 2008, an unfortunate accident was occurred, 5 people were swept away and died by a swollen river. Recently, on July 2012, an unsafe incident was happened, many people got into dangerous situation. In this study, the frequency of occurrence on local heavy rain in Toga River basin was analyzed and the circumstance and problems of anti disaster measures in Omote Rokko rivers were examined. From the result of flood frequency analysis, the next similar situation might be happened in the decade ahead. Therefore, river administrator should review the existing countermeasures against local heavy rain and river users should also recognize the risk at local heavy rain.
