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Study of sediment transport, flood protection and outline of flood plan in chosen part of the river Thaya
Berka, Ondřej ; Zachoval, Zbyněk (referee) ; Veselý, Jaroslav (advisor)
Bachalor's thesis „Study of Sediment Transport, Flood Protection and Outline of Flood Plan in Chosen Part of the River Thaya“ is divided into four parts. In the first one, I describe chosen part of the river Thaya from the Nové Mlýny to the Břeclav weir with focus on geographic, geological and hydrogeological conditions, hydrotechnical structures and river adjustments, biota and protected areas, demography and Lednice-Valtice Cultural Landscape. In the second part, I determine, by bed load samples granulometric analysis, the source of sediments, which appeard under the Břeclav weir. In the third part, I describe chosen area from the view of flood protection, I describe historical floods and I assess capacity of chosen problematic profiles using HEC-RAS program. In the last part, I focus on flood protection of the village Lednice and of the part of Lednice-Valtice Cultural Landscape, I describe problems of this area in context of flood protection and I suggest outline of the Flood Plan of the Village Lednice.
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Historical development of sediment deposition in upper reservoir of Nové Mlýny dam
Komorová, Magdaléna ; Marton, Daniel (referee) ; Zachoval, Zbyněk (advisor)
Master thesis is about historical deposition of sediments in the upper reservoir of Nové Mlýny from first fill up with water until present time. Beginning of the thesis concentrates on introduction of types of sediments and their behavior in rivers and reservoirs, sediment deposition in reservoirs and measures against sedimentation in reservoir. Part of the thesis consist of the creation of numerical one-dimensional model with transport of sediments on sections of rivers Dyje, Jevišovka and in the upper reservoir. Output data evaluation consist of analysis of sediment’s volume, development of bed in time and variation of bed evaluation in reservoir. Master thesis evaluates the development of water surface with different stages of sedimentation.
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Feasibility study of the flood protection measures
Kacálek, Tomáš ; Štěpánek, Jiří (referee) ; Dráb, Aleš (advisor)
This diploma thesis deals with assessment of flood protection measures in Břeclav. Hydraulic calculations of proposal flood events were carried out using 2D numerical model of water flow. Several simulations took account of construction phases and different values of proposal discharge. The hydraulic calculations were computed for river Thaya including its relief branch. The results were processed in the form of inundation maps, depth maps and they were recorded in longitudinal profiles of rivers.
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Suspended Sediment Load Balance in a Selected Profiles of the Thaya and Svratka River Basins
Priesner, Radek ; Mikl, Libor (referee) ; Marton, Daniel (advisor)
The balance of suspended sediment, i.e. undissolved substances carried in suspension, load in the hydrometric profiles Hevlín/Thaya, Přibice/Jihlava, Znojmo/Thaya and Židlochovice/Svratka is evaluated in this thesis. The measurements and the subsequent evaluation of the suspended sediment are carried out according to the official Austrian methodological manual, so this paper is a continuation of the previously written bachelor thesis. In addition, the selected basic steps recommended by the Austrian methodology for the actual measurement of the suspended sediment are compared with official procedures from the United States and the Czech Republic. On top of that, the work comes with innovative ways of correcting the data measured by the optical probe. The results will be used in the project ATCZ28 SEDECO – Sediments, ecosystem services and interrelation with floods and droughts in the AT-CZ border region, from which the measurement records from 2019 to 2022 themselves are available. All results are also compared with the measurements of the Czech Hydrometeorological Institute.
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Historical development of sediment deposition in upper reservoir of Nové Mlýny dam
Komorová, Magdaléna ; Marton, Daniel (referee) ; Zachoval, Zbyněk (advisor)
Master thesis is about historical deposition of sediments in the upper reservoir of Nové Mlýny from first fill up with water until present time. Beginning of the thesis concentrates on introduction of types of sediments and their behavior in rivers and reservoirs, sediment deposition in reservoirs and measures against sedimentation in reservoir. Part of the thesis consist of the creation of numerical one-dimensional model with transport of sediments on sections of rivers Dyje, Jevišovka and in the upper reservoir. Output data evaluation consist of analysis of sediment’s volume, development of bed in time and variation of bed evaluation in reservoir. Master thesis evaluates the development of water surface with different stages of sedimentation.
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Analysis of the Dyje River floods generation and their development
Grecmanová, Iva ; Březková, Lucie (advisor) ; Soukalová, Eva (referee)
3 Analýza vzniku a vývoje povodní na řece Dyji Abstrakt Tato diplomová práce se zabývá výskytem povodní v povodí horního toku Dyje po závěrový profil Podhradí nad Dyjí. Jsou analyzovány povodňové epizody z hlediska jejich vzniku, četnosti výskytu, sezonality, trendu ve výskytu, příčinných povětrnostních situací. K analýze byl použit soubor dat ČHMÚ pro profil Podhradí v období 1934-2010 (maximální měsíční průtoky a povodňové vlny). Dále jsou zhodnoceny fyzicko-geografické poměry povodí a jejich možný vliv na výskyt a průběh povodní. Byla určena dvě období povodňového neklidu v zimě (hlavně v březnu) a podružné období v létě. Zimní povodně vznikají táním sněhu při prudkých oblevách spolu s dešťovými srážkami, letní z trvalých i přívalových srážek. Jako příčinné povětrnostní situace byly určeny zejména západní cyklonální proudění, brázda nízkého tlaku a cyklóna nad střední Evropou. V posledním desetiletí výrazně vzrostl výskyt povodní na horní Dyji i jejich extremita, tři největší změřené povodně proběhly právě v této době. Klíčová slova: povodně, sezonalita povodní, hydrosynoptika, Dyje Analysis of the Dyje River floods generation and their development Abstract This master thesis focuses on the flood events on the upper Dyje River catchment to the Podhradí nad Dyjí profile. It analyses the flood regime, the...
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Fish population on the river Dyje at NP Podyjí
Štrunc, David ; Kalous, Lukáš (advisor) ; Kuříková, Pavlína (referee)
This thesis is focused on changes of fish populations in the river Dyje located at the national park Podyjí. These changes are caused mostly due to presence of two large dams (Znojemská and Vranovská dam) between which w the study locality is situated. There are also other factors affecting ichtyofauna composition as piscivorous predators, non-native species or restocking of particular target species. First information about the fish populations appeared in year 1921. In that years, the locality contained species, that are not present at the river site at the moment. Examples given: sturgeon (Acipenser ruthenus) and danube salmon (Hucho hucho). These species extincions were associated with interupted fish migration between locality and Donau river basin. On the other hand, new fish pecies (that are not-native to Czech Republic and were not observed before 1921) started to appear during following years. From the former fish population of type Barbus-Chondrostoma the type changed to Salmo-Thymallus. Most of this change was caused by regular restocking of the salmonids. Since 1993 there is evidence on new presence of tolerant fish species that do not necesarilly need cold, flowing water. There is high probability, that this appearance is caused by slowing down the river stream and also the heating of the water, that takes place in the dam.
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Feasibility study of the flood protection measures
Kacálek, Tomáš ; Štěpánek, Jiří (referee) ; Dráb, Aleš (advisor)
This diploma thesis deals with assessment of flood protection measures in Břeclav. Hydraulic calculations of proposal flood events were carried out using 2D numerical model of water flow. Several simulations took account of construction phases and different values of proposal discharge. The hydraulic calculations were computed for river Thaya including its relief branch. The results were processed in the form of inundation maps, depth maps and they were recorded in longitudinal profiles of rivers.
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Study of sediment transport, flood protection and outline of flood plan in chosen part of the river Thaya
Berka, Ondřej ; Zachoval, Zbyněk (referee) ; Veselý, Jaroslav (advisor)
Bachalor's thesis „Study of Sediment Transport, Flood Protection and Outline of Flood Plan in Chosen Part of the River Thaya“ is divided into four parts. In the first one, I describe chosen part of the river Thaya from the Nové Mlýny to the Břeclav weir with focus on geographic, geological and hydrogeological conditions, hydrotechnical structures and river adjustments, biota and protected areas, demography and Lednice-Valtice Cultural Landscape. In the second part, I determine, by bed load samples granulometric analysis, the source of sediments, which appeard under the Břeclav weir. In the third part, I describe chosen area from the view of flood protection, I describe historical floods and I assess capacity of chosen problematic profiles using HEC-RAS program. In the last part, I focus on flood protection of the village Lednice and of the part of Lednice-Valtice Cultural Landscape, I describe problems of this area in context of flood protection and I suggest outline of the Flood Plan of the Village Lednice.
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Ochrana přírody jako faktor rozvoje vybraného území na příkladu zvažované CHKO Soutok
Buchtová, Martina
The present thesis deals with the protection of nature on the proposed Protected Landscape Area Soutok and purpose Ministry of the Environment of the Czech Republic to declare here large protected area. Main emphasis is put on the analysis of opinions and interests of opponents of the purpose and subsequent comments. The investigated location is divided into nineteen administrative areas of municipalities and it is the first case in the Czech Republic, when all the mayors of the area concerned agreed on the resistance against the Protected Landscape Area, which led to its non-declaration.
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