Waterfront development in Japan is remarkably expanded in these days. On the other hand the mean sea level rise due to greenhouse effect is seriously concerned by the govermental agences and is expected to be 20-110cm in 2030.
Considering the present circumstances the precise evaluation of wave overtopping is of extremely importance for the future planning of coastal protection in Japan.
In this paper a new method is presented to calculate the wave overtopping rate of sea wall which is located on a complicative bottom profile of sea coast. The proposed method was applied to the cases in laloratory as well as in field. The agreement between the expected values and the available data was favourable good.
