The present situation in the disaster management is characterized with low level application of geographical data. Some relevant examples of such data efficient utilizing in the simulated toxic road accident are presented in the paper. They represent pollutant runoff routes modeling, environment infiltration risk assessment, as well as the land value computing. Different ways of visualizing serve disaster management staff, and wide public event participants. All the data is available in the digital form in databases accessible under different conditions in the Czech Republic, the geographical knowledge application is based on the utilizing the GIS tools.