The main topic of the bachelor's thesis is the floods in 2002 and 2013 in the entire affected area of the Czech Republic and also in the village with extended powers of Vodňany. The activities of the relevant authorities and the population were evaluated, focusing on the extent of the evacuation and the progress of the basic and other components of the integrated rescue system. The theoretical part begins by defining important legislation for this topic, which is a basic pillar here. Furthermore, this section contains a description of the integrated rescue system, flood authorities and individual measures before and during the flood. There is also a simple explanation of the term "evacuation" and the last chapters of the theoretical part include the floods in 2002, 2013 and the flood situation in Europe in 2021, because in each country the intensity of floods, their consequences, course, but also the progress of rescue services and the attitude of the population varies more or less. The scenario is not always the same, and it is important to know how other countries will deal with a living disaster of this magnitude. The practical part focused on a detailed description of the content of the Digital Flood Plan of the town of Vodňany, a breakdown and assessment of the activities of the authorities and the integrated rescue system during the floods in 2002 and 2013 in Vodňany and finding out the knowledge and preparedness of the Vodňany population on the topic of floods. The results of this survey were developed into graphs. Based on the acquired knowledge, it can be stated that there are obvious shortcomings in the knowledge of the citizens of Vodňany on the topic of floods.