Abstract
During Typhoon No.19, the amount of heavy rainfall reached a record-breaking 300 mm in the mountain regions of Nasu, located from Nikko in the Tochigi prefecture to Shirakawa in the Fukushima prefecture, and Abukuma, located from the northern part of the Ibaraki prefecture to the Hamadori region in the Fukushima prefecture and the southern part of the Miyagi prefecture. Rainfall flowed from both mountain areas into the Abukuma River, which caused a flooding disaster that overflowed the retrospective water levels in the middle reaches of Sukagawa, Koriyama, Motomiya, and Fukushima and the lower reaches of Marumori. In Koriyama City, 6 people died and over 11,000 buildings were damaged by the overflowing waters from the Abukuma River and its branches, Yata River's dyke break and the Ose River's overflow etc. As a result, the flood damage was worse than that of the '8.5 Flood Damage' in 1986. In particular, at Suimonmachi, Jukkangawara, and Chuo Kogyo Danchi, which are located in between the Abukuma and Yata Rivers, the inundation rose up to approximately 4 meters among the office and factory areas that are still not restored to this day.
