The aim of this thesis was to create an accurate model of the “kleine Ötscherbachlawine”. The results derived from the simulation of this model should lead to calculated boundaries of hazard zones in accordance with the Austrian guidelines for hazard zoning. As a first step, all available information about the avalanche was collected. Several field observations, interrogations of local experts, as well as analyses of weather and terrain Data were carried out. In this context a digital surface model of the snow surface in the catchment area, which was created from airborne laser scanner data, serves as basis for the calibration of the model. The next step was to build a model of the definite event using the avalanche simulation software SAMOS-AT. With the information, received from the simulation results, a second model was created. The second model represents the design event of this particular avalanche. After the simulation of the second model, the results of the observation were checked for plausibility. The results were then used to define hazard zones according to the Austrian guidelines for hazard zoning. These hazard zones represent the final results of this Thesis.