Abstract
Tottori Sand Dune Coast has been eroded starting around 1940s and the beach nourishment project has been carried out to restore the shoreline since 2005. In the project, the deposition sand at port and river mouth were dredged and transported to the erosional area. And then the sand was injected in the region offshore erosional area and the backshore area. The total volume of the sand was approximately 650,000m3 from 2005 to 2014. In this study, the effect of the project was estimated using the bottom sounding data and the shoreline data. The shorelines showed trend to restore after the beach nourishment project. From this study, it was found that although a part of injected sediments was moved to the Tottori port, recovery of the shoreline was maintained.
