Shift to flood protection measures taking into account global warming
There are concerns that the scale of flood damage will increase due to the effects of global warming, such as the heavy rain caused by Typhoon No.19. Under these circumstances, the Ministry of Land, Infrastructure, Transport and Tourism decided to switch from measures that were based on the largest flood damage in the past to measures that take into account the rise in temperature due to global warming.
The Ministry of Land, Infrastructure, Transport and Tourism established a study group made up of experts in weather and rivers in April last year to discuss countermeasures against flooding in consideration of global warming, and a proposal was announced on the 18th.
According to the forecast by the Japan Meteorological Agency, when the temperature rises by 2 degrees due to global warming, the frequency of heavy rain once every 100-200 years will be doubled. We propose that it is necessary to switch from measures that were based on flood damage to measures that take into account the rise in temperature due to global warming.
In response to this, the Ministry of Land, Infrastructure, Transport and Tourism will examine how to strengthen facilities such as levees and dams for rivers nationwide, including where there are broken dykes, and reflect them in their respective maintenance plans. I have decided.