Abstract
This paper describes the development of a large-scale distributed rainfall-runoff/flood-inundation simulation (DRR/FI) model. The DRR/FI model can simulate the rainfall-runoff, dike-break and inland flood inundation processes simultaneously in a seamless/integrated manner. Most of the data for the modeling is obtained from the Digital National Land Information (DNLI) of the Ministry of the Land, Infrastructure, Transport and Tourisms. Data processing is carried out with GIS so that the coordinate system of the model is appropriately set up, thus the model can have the interface with other models such as weather, climate, evacuation, vulnerability and financial models. The model validation is carried out with an example for the Yodogawa river catchment (8240 km2). Modeling results can be applied to the insurance business as well as the government's disaster risk management.
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