Abstract
The purpose of this paper was the investigation of a numerical calculation method for a diffusion of pollution in a network of tidal rivers. Using the split-operator approach, an advective transport process was calculated by the two-point fourth-order Holly-Preissmann scheme and a dispersion process was calculated by the Crank-Nicholson scheme. The method of applying these schemes to the confluence and branching of a river were investigated. The calculated results for the Shinmachi River system were consistent with the observed ones.
