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In this study, a doubly nested tide-surge model was established for the coastal region of Bangladesh. This model can be applied in coastal Belt Tide Height Calculation. A uniform grid model is being converted to the region between

21 N to 23 N and 89 E to 90 E in a grid resolution. The model equations were solved by semi-implicit finite difference technique. An appropriate tidal condition over the model domain could be generated in the sea level to be oscillatory. To the northeast corner, the Meghna River in Bangladesh discharge and rainfall distribution was taken into account. The results of Nesting Surge model are found to be a reasonable agreement with those observed data from Bangladesh inland water transport authority (BIWTA). So, the Tide Height Calculation is a significant matter here to be discussed.