Heavy rainfall events recorded in August 2002 caused floods of many tributaries to the Elbe River leading to a major flood event, which is regarded as one of the major flood events recorded in Europe. In this research, I analysed the Elbe 2002 flood that passed through two German states (Sachsen and Sachsen-Anhalt) with more focus on the cities between Aken and Torgau. I acquired Landsat 7 Remote Sensing imaging data for spatial analysis, and SRTM DEM data for extracting elevation data of our area of interest to project areas that are severely affected and could be affected if the same event resurgent. I adopted the QGIS software for computing, editing, and presenting graphical maps with the use of different geoinformation tools to aid my analysis. I compared supervised classification with band ratio index calculation for flood analysis, then use SRTM data for altitude detection within the flood area. The enormous flood around Aken to Torgau were calculated and visualized, the inclusion of Open Street map-based buildings around the area of study with the extracted elevation ranging from 50m to 80m were used to determine areas that could be prone to further damages if the same extent of flood resurgent. More than a hundred thousand buildings and infrastructures were categorized in this area and said to be at risk if proper flood risk management are not put to place.