At the beginning of my thesis, the risk of floods in the territory of the Czech Republic is generally characterized which is followed by basic legal documents governing flood protection. The characteristics of the territory on which this thesis focuses is presented in the next section, which is describes in detail the administrative district of the municipality with extended powers (MEP) of Týn nad Vltavou, the basic description of its hydrological basin and waterways and, of course, the flood profile of the individual municipalities. The following section explains the term of flood, classification of floods and a detailed description of flood risks within detail the administrative district of the MEP of Týn nad Vltavou emphasizing the risk of formation a special flood. This is followed a list of complex activities and measures aimed at preventing and eliminating the threats to the health, lives and property of the citizens, society and the environment during floods. It also discusses planning in the field of flood protection and the classification of flood plans. Emphasis is placed on the documentation of flood protection of the administrative district of the MEP of Týn nad Vltavou that is associated with the activities of flood protection authorities. The section discusses in detail their activities during floods as well as when there are no floods. The function of flood committee of the MEP Týn nad Vltavou is mentioned detailing the description of activities of its individual members. The objectives of this thesis were aimed at finding out about the level of prepared flood protection documentation processed, analysing the activities of flood protection authorities and examining their knowledge about the issue of flooding. All the objectives were directed to the administrative district of the MEP Týn nad Vltavou and its flood protection authorities. Through a sociological survey among the flood protection authorities of the administrative district of the MEP Týn nad Vltavou that was conducted in the form of an anonymous questionnaire testing their knowledge in the field of flood protection. The results obtained were subjected to statistical evaluation, which, together with graphical representation, is of part of the thesis.

En application de l'article 33 de la loi du 16 septembre 1807 relative au dessèchement des marais, la responsabilité du maintien et du contrôle de la bonne sécurité des digues relève du propriétaire de la digue. Au fil des ans, plusieurs textes sont venus préciser et renforcer les obligations en matière de gestion et d'entretien des digues contribuant au sentiment de sécurité que peuvent conférer ces ouvrages. Toutefois, alors qu’elles sont censées protéger les populations, les digues ont progressivement été qualifiées d’« ouvrages de danger » du fait du risque inhérent à leur rupture, conduisant à l’émergence d’un « risque digue » qui reconnaît juridiquement les limites des travaux de protection et de correction des cours d’eau et des rivages, et même leur contribution involontaire à la production de désastres. Les inondations et submersions marines qui sont survenues au cours des deux dernières décennies ont en effet illustré une importante situation de défaut d’entretien des digues sur l’ensemble du territoire métropolitain dont l’origine a pu être identifiée au travers d’une structure de la propriété des digues complexe, avec de multiples intervenants, l’absence pour de nombreux propriétaires riverains de volonté ou de moyens d’investir les sommes nécessaires pour la protection des digues, dont les enjeux dépassent souvent la protection de leurs biens et, en conséquence, pour pallier les carences des propriétaires de digues, une substitution des collectivités territoriales, sans que fût nécessairement mis en œuvre des moyens financiers suffisamment conséquents, et sans que celles-ci mesurent toujours à quel point elles engageaient leur responsabilité / In accordance with article 33 of the 16 september 1807 act relating to the draining of marshes, owners of dams are legally responsible for maintaining and monitoring the dams’ security. Various laws have clarified and strengthened the management and maintenance duty of dams over time to provide a sense of security. Despite the fact that the dams are built to protect people’s security, they have been considered as “hazardous structures” due to the potential risk of collapse. In addition, the legal concept of ‘dams disaster’ has emerged and been established, recognizing the limits of water proofing works as well as improvement and maintenance works and legally recognizing even unexpected disasters. Flooding and submersions occurred during last two decades demonstrated a significant lack of adequate maintenance for dams throughout the mainland France. The cause of lack of maintenance can be attributed to a complicated structure of ownership, which include many stakeholders and also to the owners’ unwillingness or lack of funding to make investments required for improvement and maintenance works. But, these stakes often go beyond the protection of their property. Furthermore, the responsibility of dam owners has been allocated to local authorities to offset deficiencies, but it was done so without preparing financial measures necessary for maintenance works and fully assessing the level of funds needed

The diploma thesis is focused on the assessment of the stream and the proposal against flood risk in the location of town Březová nad Svitavou. The stream Svitava flows under administration of Povodí Moravy. s. p. The stream Svitava flowing through urban area, has a high potencial flood risk. The current situation of a section of the stream is assessed based on defined data and personal inspection. On the stream, there were provided the measurements by the method of HEM. Capacity of the stream along with the objects for the particular section were calculated in the software HEC-RAS. Based on the results, there have been designed the flood protection. The final design was verified by the calculation in the program HEC-RAS.

The diploma thesis focuses on the assessment of the current state of the Svratka watercourse and of the capacity of the existing objects on the course, which is partially modified in the solved locality and includes both â intravarian and extravarian areas of the town. Within hydrotechnical calculations, the 1D mathematical model HEC-RAS version 5.0.6 was used to determine the course of levels. The thesis focuses also on suitable design of flood protection measures on the river Svratka with protection for design flow Qn = Q20 = 28,6 m3 / s.

This thesis is a study of flood protection in the community Želešice, Brno-venkov. The theoretical part deals with: the causes of flooding, their dividing and deals with options, how to protect endangered area. Main part includes calculations of the amount of sediment in the river Bobrava and the Hajanský stream, analysis of risks by quantitative expression, suggests to complete the flood plan of the community and a list of designed flood control measures with own technical suggestion. The last point is to consider, whether is the community threatened by backwater from the river Svratka, which the river Bobrava flows into.

The main aim of the diploma thesis was an assessment of the current state of the Svratka watercourse flowing largely through the urban area of the town of Jimramov, especially the adjacent parts of Sedliště and Benátky, and to a lesser extent through the suburban area below the municipality. The given section is 2,6 km long with the beginning in the river kilometer 131,10 and the end in the river kilometer 133,70. The capacity of flows and objels in the given period has been assessed (bridges, weirs, steps, etc.). Calculation water surface profiles have been made by usage of the 1D mathematical model HEC-RAS. Part of the work was to determine the current level of flood protection on the stream. The assessment is based on personal visit and photos taken as rekord. The thesis was complemented with hydroecological monitoring of the stream channel – the HEM analysis 2014. The final phase of the work deals with the conceptual design of a nature-friendly flood control measure to increase the protection of the adjacent area and improve the condition of the watercourse. Progress of individual levels and measures are based on hydrotechnical calculations.