Hydrodynamic modeling for identifying flood vulnerability zones in lower Damodar river of eastern India
This report discusses the identification of flood vulnerability zone is very essential to minimize the damage associated withthe flood. The present study adopted the Hydrodynamic modeling technique for the identification of floodvulnerability zones in lower Damodar river of eastern India. Preprocessing of data and preparation of var-ious input geometry data (river network, bank line) for the hydrodynamic model were done in an ArcGISenvironment with the help of high resolution satellite imagery and field survey.
The model was calibrated for the Manning’s coefficient of roughness (n) and validated with ground data and field photographs high-resolution, the efficiency of the model was estimated by the index of agreement ‘‘d” which clearly showsgood agreement between model data and observed data. Based on the model output flooding hotspotswere demarcated. It was observed that areas downstream to the bifurcation point of the Damodar riverare more vulnerable to flooding.