We applied a distributed model, which Yoshino et al. had developed for the Lake Kasumigaura watershed. As this model was initially developed for mountainous area, we attached a quasi-three dimensional ground water model to it. The estimated result in river discharge, ground water height and lake surface height explained observed data almost successfully. Along with this, we estimated hydrological cycle of highly urbanized area in a standard grid cell and overall watershed. Compared to the latter, the former showed well the feature of hydrological cycle in urbanized area. The result showed that a distributed model attached a quasi-three dimensional ground water model was effective to enhance watershed management.