STUDY ON THE FUTURE FLOOD CONTROL ADAPTATION BY DAMS IN THE KASE RIVER

Abstract

 As natural disaster hazard intensifies drastically, attributed to the effect of global warming, the capacity to prevent disaster in Japan has been weakened due to degrading infrastructure and an aging population. In order to reduce the damage caused by such disasters, the flood control adaptation method in the Kase River by using existing dams, Hokuzan Dam and Kasegawa Dam, were discussed. In this study, future climate conditions in the Kase River basin were set on the basis of d4PDF (: database for Policy Decision making for Future climate change).

 Computational results demonstrated that the storage capacity of Kasegawa Dam was enough large in order to control the flow discharge hydrograph due to the future precipitation. Therefore, if the existing dams can be fully utilized by carrying out prior discharge, the flood control will be possible in the Kase River basin even under the future extreme precipitation.