Abstract
It is important for dam owners to prepare an accurate rainfall prediction model which can deal with local severe rain in mountainous regions in order to operate and maintain dams appropriately. So far, our group have tried to develop rainfall prediction models for the Kurobe Valley not only for properly operating the dams on the Kurobe River but also for well providing for flood damages. In this paper, we introduce a newly developed rainfall prediction model. The rainfall prediction model has higher accuracy than exixting models by the following two reasons. The one is that the mechanism of rainfall generation and development, which is remarkable features in mountainous regions, is formulated in the model. The other is that the extraporation model and the meso-scale atomospheric model are optimally combined, aiming to incorporating advantages of each model. The results by this hybrid model, linked with a distributed runoff model which is made separetaly, have already utilized for acutual dam administration works.
