Study on Distributed Runoff Model

A drainage basin consists of hillslopes and channels. Hillslopes are the main regions at which rainfall is converted into runoff discharge and channels are the region where the runoff discharge from subbasins is synthesized and transported to the outlet of the basin. Hydrologic response is influenced not only by hillslope response but also by channel network response. The properties of hillslopes and channel networks such as slope length, slope gradient and distance from sub-basin to the outlet are best described by statistical method. This paper aims at evaluating stochastic hydrological response by intro-ducing random differential equations.