PARAMETER TUNING METHOD AND REAL-TIME CALIBRATION METHOD OF DISTRIBUTED HYDROLOGICAL MODEL BY REAL-TIME FLOOD FORECASTING IN THE CHIKUGOGAWA RIVER BASIN

Abstract

In recent years, the real-time flood forecasting system which uses distributed hydrological model is increasing. Since a large-scale flood has occurred, it is important to perform accuracy improvement of flood forecasting. The PWRI Distributed Model is a constant distributed runoff model which estimate discharge for each mesh.

The purpose of this study is establishment of the parameter tuning method and the real-time calibration method of distributed hydrological model by real-time flood forecasting system. This paper describes the real-time flood forecasting results using SCE-UA global optimaization method and real-time calibration in the Chikugogawa river basin.