Beach changes at the Kemigawa artificial Beach in Tokyo Bay were investigated based on field surveys. Beach nourishment was conducted and the shoreline paralell to the seawall was formed.In order to enhance stability of nourished sand, curved groins were built at the south and north ends after the nourishment, forming wave calm zones in their lee sides. Large scale shoreline changes were triggered due to the construction. Beach changes were measured, and the changes in the beach profiles and the shoreline were studied. Comparison between the measured shoreline and that predicted by Hsu's model was made.
