Approach

The objective of this study was to investigate the flood vulnerability assessment at a project site near Meghna Ferry Ghat due to rise in river water due to floods in a 5 km channel of Meghna River in front of the project site. The design period for the project is 50 years and the vulnerability of the area corresponding to 50-year return period flood is considered.

The hydrodynamic model was developed using HEC-RAS 1D unsteady flow module considering the upstream boundary condition at Bhyder Bazar and downstream.

Boundary condition at Satnal covering a channel length of around 30 km. The model was calibrated with the help of water level measurements at Meghna Ferry Bridge. The flood hazard map was then presented which gives the inundation extent as well as water depths divided into 6 classes around the project site which might get submerged during the flooding condition in the Meghna River.

Client

M/s AECOM India Private Limited