Bengkalis Island is one of the two major islands in Bengkalis Regency. Based on data from the Badan Pusat Statistik Kabupaten Bengkalis, there are two sub-districts in Bengkalis Island: Bengkalis District and Bantan District with an area of 905.17 Km2. In the last 26 years there has been abrasion on Bengkalis Island with an average abrasion rate of 59 ha/year, and a sedimentation rate of 16.5 h…