The purpose of this study is developing the runoff model using dynamic simulator. A dynamic simulator is the self-organization simulation which is based on related databases, components concept and unidirectional information fetch scheme. In runoff model, there are components of atmosphere, basins, channel and rester and they collect information from geometric proximate components. In this study, the runoff model is applied by establishing imaginary basins. The model's usefulness is proved by comparing its result with synthetic unit hydro's.