The devastating impact of floods could result in long-term economic consequences, property damage, mortality, and disruptions to essential services. Flood risk assessment is crucial to the solution of these problems because it provides valuable information about the potential frequency and magnitude of flooding episodes. Through a rigorous examination of variables such as geography, hydrology, land use, and climatic changes, flood risk assessment determines how susceptible populations and assets are to flooding. This method assists in locating areas that are vulnerable to flooding. With this information at hand, policymakers may improve catastrophe planning and response procedures, create informed plans for reducing the effects of floods, and allocate resources more effectively to reduce their effects. In the proposed method, the otsu and difference thresholding methods are being used to calculate the population affected by the flood. The model is 92.3% accurate in predicting the locations of the 12 affected districts. The resulting flood map may then be coupled with demographic statistics.