The Hiroshima Delta is located in the Ota River estuary of Hiroshima city. Sedimentation of the delta is defined by the interaction of sediment supply and relative sea-level change. In this paper, overview of sequence stratigraphy for the basis of understanding the depositional process of delta, and the formation process of the Hiroshima Delta are organized by previous studies. And a flume experiment was shown for using the depositional process of Hiroshima Delta as a learning material for understanding the function of running water and formation and change of land.