Integrated Flood Management based on Sustainable Regional Policies dealing with Extreme Weather

The contributing factors of precipitations extreme change in recent years are mainly due to the impact of global warming.Daily extreme changes in the weather are recognized from "abnormal weather"to "extreme weather".For the damage of excessive precipitation through the Japanese archipelago, the conventional flood-control plan made the shift to new flood-control plan with climate change adaptation.The philosophy of the flood disaster prevention/mitigation which proposed new concept on the Report to the Prime Minister of the Reconstruction Design Council in response to the Great East Japan Earthquake has popular usage towards the countermeasures of flood-control plan.On the designing the solution of flood plan based on climate change adaptation should be examined today's extreme weather.As new phase of the extreme weather disaster, the limitation of the fragility of stormwater drainage on the sewerage system was exposed.To overcome some of the barriers to the sewerage system, sustainable flood control management which should be implemented with due consideration of river basin management system.The meaning of the rainwater storage and infiltration technology is recognized by the all interest groups, to evaluating method of the effects is new paradigm of flood control management.Based on the premise of river basin flood control management system which reduce the threat the extreme weather disaster, the spirit of "Self-help, Mutual help, Public help" should be create as a social system to reduce the threat of damage of flood.Integrated flood management system is encouraged to shift away from traditional flood management system, such as "Storage and Infiltration of Rain Water