1Professor, Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan
2Director General for Nuclear Disaster Management, Cabinet Office, Tokyo, Japan (ex-Director, River Environment Division Water and Disaster Management Bureau, Ministry of Land, Infrastructure, Transport and Tourism, Tokyo, Japan)
3Adviser, Hazama Ando Corporation, Tokyo, Japan
Flood control operation, Emergency spillway gate operation, Evacuation information, Preliminary release, Dam upgrading in operation
