Abstract
One of the common and unpredictably occurring disasters Bangladesh experiences each year is river bank erosion. In Meghna River, erosion is a major issue, particularly during the pre- and post-monsoon seasons. The aim of this study is to evaluate the risk of coastal erosion to the local community by analyzing previous as well as present data. Four Landsat images were utilized in this study to detect changes in the river bank. ArcGIS 10.3 was used for data encoding and analysis. According to the study, the Meghna River's overall changing area from 1992 to 2022 is 21210.38 ha, whereas its overall unchanged area is 56454.18 ha. The study found that, between 1992 and 2022, there was an average erosion rate of 16137.89 ha and an average accretion rate of 37348.27 ha. The people who live in the floodplain are severely impacted by the erosion of the Meghna River bank. Therefore, it is imperative to take appropriate steps to minimize erosion, such as building sustainable embankments, implementing an afforestation program, providing suitable income-generating opportunities for displaced people, etc.
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