Emergency release at 6 dams Ministry of Land, Infrastructure, Transport and Tourism October 13 17:39
According to the Ministry of Land, Infrastructure, Transport and Tourism, the level of storms caused by typhoon No. 19 raised the water level, and the “emergency release” dams of the state management were six dams in the morning of the 13th, Kanto, Fukushima Prefecture, and Nagano Prefecture.
The flood control dam has the function of adjusting the amount of water discharged downstream in the event of heavy rain to prevent the river from rising, but when the amount of inflow increases and it becomes impossible to store water, the same amount of water as the inflowing water is collected. We perform “emergency discharge” which is called disaster prevention operation in case of abnormal flooding.
According to the Ministry of Land, Infrastructure, Transport and Tourism, this operation was carried out at various dams from 12th to 13th due to heavy rain caused by Typhoon # 19.
“Emergency release” was conducted in ▽ Mizuma Dam on the Kitakagawa River in Kitaibaraki City, Ibaraki Prefecture, Ryujin Dam on Kuji River in Hitachiota City, Ibaraki Prefecture, and Shiobara River on the Naka River in Nasushiobara City, Tochigi Prefecture Dam: ▽ Sagayama Dam of Sagami River in Sagamihara City, Kanagawa Prefecture, Takashiba Dam of Yodo River in Iwaki City, Fukushima Prefecture, Miwa Dam of Tenryu River in Ina City, Nagano Prefecture.
With regard to these emergency releases, the Ministry of Land, Infrastructure, Transport and Tourism stated that it was “informed in advance to the local residents through the relevant organizations in advance” and “the fact that large-scale flooding occurred due to the release was now It has not been confirmed yet. "