Generally speaking, Austria has a well-working cadastral-system. This provides the basis for several public law and private law responsibilities like land taxation, ownership protection, spatial planning, etc. However, under certain circumstances a disaster can have great effects on the cadastre. On the one hand reference points and boundary marks might be destroyed or displaced, on the other hand important data might get lost. On tbe basis of different disaster scenarios, this thesis aims to discover how potential destroyed realization of the cadastre and loss of data might be re-established. Thus, the hypothesis -The Austrian cadastre must be well prepared for disasters, since it has faced and dealt with several of them in the past- should be confirmed. The above mentioned hypothesis shall be supported by analysing the effects of three different natural hazards (floodwater, mass movement and earthquake) with reference to certain events. Thereby, the focus will be on possible impacts on the course of boundary lines, technical reconstruction as well as available legal procedures for reestablishment. In the course of a disaster cadastral and title register data might get lost as well. Over the last three decades both title register and cadastre have already been processed by a computerized database referred to as the 'Grundstücksdatenbank'. Due to the latest security precautions there is only a minor risk of failure for these digital data. Nevertheless, a few analogue components still exist. In the case of its destruction the data might be reconstructed on the basis of duplicates of other archives. This thesis examines where duplicates of analogue data are stored and to what extent these data might be restored in case of an occurring data loss event. The results of the thesis will eventually provide information about the robustness of the Austrian cadastre.