Abstract
It is generally thought that runoff phenomenon at the time of a flood is consisted of a number of runoff components, and historically rainfall-runoff model considering multi-layer flow in a slope is proposed. The purpose of this study is to propose the runoff model in consideration of multi-layer flow and to indicate possible application of long-and short-term runoff analysis. This paper shows outline of proposed rainfall-runoff model considering multi-layer flow in a slope. Additionally, it argues over the difference of reproducibility from existing model. Moreover, this model is applied to long-and short-term runoff analysis at the Kusaki dam basin (254km2). In conclusion, the model considering multi-layer flow was able to be proposed by incorporating no difficulty involved vertical infiltration mechanism to the existing model. As a result of runoff analysis at the Kusaki dam basin, the availability of the proposed model is shown.
