Varieties of Water Level Gauges to Prevent Water-Related Disasters in Japan (PAP014353)

Código

PAP014353

Autores

Junko Wakatsuki, Yosuke Ito, Shigenobu Tsuruoka

Tema

Flood forecasting and early warning systems

Resumo

In recent years, flood disasters are frequently occurring by typhoons and localized torrential rainfalls, which are heavily damaging people and materials in Japan. Therefore, the importance of water level observation has been re-acknowledged for flood warning and forecasting. Conventionally, water level observation stations have been installed mainly around large rivers which are managed by MLIT (Ministry Land, Infrastructure, Transport and Tourism) and each prefecture. In addition, recently to be prepared for floods caused by localized torrential rainfall, its target is also widening to small or medium rivers which are managed by local government to issue an adequate and prompt flood warning for local narrow area. In these stations, water level gauge is a fundamental equipment and is needed a high accuracy and a high durability. For this purpose, various types of gauges have been developed and improved in Japan.