Typhoon No. 19: November 12, 1:55 when it is necessary to review measures against record disasters such as inundation and landslides
One month is 12 days after the heavy rain disaster caused by Typhoon # 19. Inundation due to flooding has exceeded the “Western Japan heavy rain” of last year, and sediment-related disasters are the most frequent due to a single typhoon, making it a record heavy rain disaster that requires the country to review measures. .
According to the Ministry of Land, Infrastructure, Transport and Tourism, in the case of a heavy rain disaster caused by Typhoon No. 19, dykes broke down in 140 rivers in 71 rivers in total in 7 prefectures, mainly in eastern Japan and Tohoku, and flooded in a total of 298 rivers in 16 prefectures. Has occurred.
The flooded area is at least 25,000 hectares, making it a record heavy rain disaster that surpassed last year's heavy rains in West Japan.
In addition, there were 884 landslide disasters such as landslides and debris flows in 20 metropolitan prefectures, and the number of landslides was the highest since 1982 when records were recorded.
In this disaster, many small and medium-sized rivers whose levee broke were not included in the scope of setting the inundation assumption range in advance, and there were cases where the location of landslides was not designated as a landslide disaster alert area .
It has been pointed out that due to future climate change, such as global warming, torrential rain disasters will occur frequently, resulting in widespread and drastic changes.
The Ministry of Land, Infrastructure, Transport and Tourism will review the disaster prevention measures while reviewing hardware measures such as dikes and dams, and reviewing disaster prevention measures in conjunction with soft measures, such as setting inundation assumption ranges in small and medium-sized rivers. The