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Summary of a potential evapotranspiration calculation methods in the selected river basins
Bedáňová, Jana ; Benáčková, Kateřina (referee) ; Marton, Daniel (advisor)
The master's thesis deals with the research of available methods for calculating potential evapotranspiration and the subsequent application of selected methods. The text part describes general knowledge about evapotranspiration, specific types of vapors from different surfaces (water, soil, vegetation, snow cover, urbanized area). The following are methods of direct measurement, where the types of vapor meters are described, for which types of vapors they are used. Indirect measurement methods for determining potential evapotranspiration and their distribution are also described here. The main part of the research is empirical methods for calculating potential evapotranspiration, here is a selected list of these methods. Furthermore, a practical application of the method according to Thornthwaite, Hargreaves-Samani and Hargreaves-Allen is carried out using data from the Olomouc-Holice precipitation station, the data of which are available from the ČHMÚ portal. Then a comparison of the used calculation methods is made.
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Bank infiltration in area of Jordán meander on Orlice river
Drmota, Adam ; Hrkal, Zbyněk (advisor) ; Slavík, Martin (referee)
This thesis deals with the study of the Jordán meander on the Orlice River, where the watercourse has undergone extensive revitalization in recent years, which after several decades returned the watercourse to its original riverbed. In connection with the revitalization of the watercourse, an increase in the level of groundwater in the surrounding quaternary aquifer was expected. In this case we can call it artificial bank infiltration. In order to confirm this assumption, hydrogeological boreholes HV1 to HV4 were placed at the site, and they were used for groundwater level monitoring since year 2018. The results of the monitoring document the positive impact of the revitalization on the level of groundwater in the surrounding river alluviums. Furthermore, it was found that boreholes on different banks of the Orlice River react to flow rates in the river and revitalization measures, quite differently. Differences can also be caused by orders of magnitude different hydraulic parameters on both banks, which have been verified using field pumping tests. Keywords: Bank infiltration, monitoring, pumping tests, revitalization
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Optimization of digital river network and its impact on catchment water management
Hošek, Zdeněk ; Matoušková, Milada (advisor) ; Šípek, Václav (referee)
Digital river network dataset is an important source of information in any aspect of water management decision making. It is also a base for modelling or scientific research in many different fields. Development of the dataset in the Czech Republic had been fragmented in a past and as a result three different datasets have been developed that cover the whole of the state's territory. The datasets contain different geometries, different and often conflicting attributes and serve different purposes. Today the time has come that water management decision makers have realised that the situation is no longer sustainable and make effort to merge the datasets into one. The task brings in several technical issues and a potential for severe legal consequences. The aim of this study is to develop a methodological approach to merging the existing datasets into one. This methodological approach to decision which of the conflicting or different attributes should be adopted is based on assumption that the existing datasets will be merged into one consisting the best of all. Comparison of features in the existing dataset will inevitably lead to many conflicts when it will be necessary to decide which of the considered features should be adopted to the resulting dataset. The study considers the main purposes which...
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Optimization of digital river network and its impact on catchment water management
Hošek, Zdeněk ; Matoušková, Milada (advisor) ; Šípek, Václav (referee)
Digital river network dataset is an important source of information in any aspect of water management decision making. It is also a base for modelling or scientific research in many different fields. Development of the dataset in the Czech Republic had been fragmented in a past and as a result three different datasets have been developed that cover the whole of the state's territory. The datasets contain different geometries, different and often conflicting attributes and serve different purposes. Today the time has come that water management decision makers have realised that the situation is no longer sustainable and make effort to merge the datasets into one. The task brings in several technical issues and a potential for severe legal consequences. The aim of this study is to develop a methodological approach to merging the existing datasets into one. This methodological approach to decision which of the conflicting or different attributes should be adopted is based on assumption that the existing datasets will be merged into one consisting the best of all. Comparison of features in the existing dataset will inevitably lead to many conflicts when it will be necessary to decide which of the considered features should be adopted to the resulting dataset. The study considers the main purposes which...
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Factors affecting the water discharge from the river basin during rainfall-runoff events
TICHÁČEK, Pavel
This thesis focuses on the factors affecting runoff water from the basin during the rainfall-runoff events. Work begins by describing the circulation of water in nature and continues with hydrological balance. Next chapter is the formation of precipitation and water runoff, in which the water outflow is divided into surface and subsurface. In the work is characterized runoff process and there are described factors that affect water runoff from the watershed. The last part describes the possibility of using these factors for creating erosion and flood control.
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Factors affecting the total outoff from the watershed and its individual components
MORAVCOVÁ, Lenka
This thesis is focused on the topic of total outflow from the watershed. In the first part water is divided into surface water, subsurface and groundwater, there is also described water circulation, hydrological balance, water retention and water accumulation, as well as characteristics of hydrographic network in the country. There are listed and explained outflow folders and measures to reduce surface runoff. In the second part of this work methods of separating the individual components of outflow, such as CN-method, Kliner and Kněžek method, model SMODERP, HYDROG model, GROUND and MGPM methods are described. In the conclusion it is explained that outflow from the watershed generates not only because of rainfall, but also due to geological, pedological, anthropogenic and other factors.
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Base flow-separation method, factors affecting the incidence and size
VLASÁK, Ivo
This bachelor thesis focuses on hydrological cycle, hydrological balance and hydrology of underground waters. Underground waters holding in a river stream is one of the most important characteristics of hydrological mode of a river. Underground waters proportion is detected from a line of flow rate in the course of many years via so called separation of underground river stream. There are several methods of separation and problematics of these methods is described in detail in this thesis. What is mentioned further are the factors influencing occurance and size of an elemental outflow rate, these factors being in particular climate, geology,relief of land, vegetation and last but not least human aktivity. Outflow rate which comes through the cycle of underground waters can be considered as an elemental outflow rate. Outflow rate is a subject matter of a further chapter. Water flowing out in a form of an elemental outflow rate creates both surface and underground waters, which are constituents of a cycle of water in the nature, which is described in this thesis in a detail together with surface, underground and subsurface water.
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The influence of drainage systems on catchment water regime
ČERVONYJ, Jakub
The influence of drainage systems on catchment water regime was dealt within this bachelor´s work in the form of literature review. The water regime of landscape as well as components of hydrological balance in catchment was described in the first part. Basic concepts of agricultural drainage systems are described in the second part. The last part of literature review was devoted to the influence of drainage systems on water the characteristics of Jenínský strem catchment, where the systematic drinage systems were built in history. The description of the area of interest includes the evaluation of functionality of drains after 30 years of presence in the catchment, executed by field research.
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Vodohospodářské řešení rekultivace a revitalizace Podkrušnohorské uhelné pánve
Hydroprojekt a.s., Praha ; Chour, Vladimír
Cílem projektu je vymezení vodohospodářských podmínek a a stanovení optimálního postupu pro rekultivaci zbytkových jam po těžbě uhlí tzv. mokrou cestou a získání podkladů pro rozhodování státní správy - povolování odběrů povrchových vod k napouštění zbytkových jam, časový režim, minimální zbytkové průtoky a požadavky na jakost odebraných vod. Zpráva předkládá principiální přístupy k řešení a přináší postupové zprávy ze dvanácti dílčích úkolů: DÚ 01 Podrobné vodohospodářské řešení celé oblasti, DÚ 02 Podklady pro rozhodování státní správy, DÚ 03 informatika pro životní prostředí, DÚ 04 Analýza a upřesňovaní hydrologických podkladů v povodí Ohře a Bíliny, DÚ 05 Bilance podzemních vod v povodí Ohře a Bíliny, DÚ 06 Hydrobiologické a ichtyologické aspekty, DÚ 07 Tvorba krajiny povodí Ohře a Bíliny, DÚ 08 Aktualizace a komplexní digitalizace území CHOPAV Krušné hory, DÚ Vypracování koncepce a organizace monitoringu kvality vody a protihavarijní zabezpečení plnění důlních jezer povrchovou vodou, DÚ 10 vypracování a ověření matematického modelu zjednodušené hydrografické sítě, srážko-odtokových vztahů a přítoků do jezer, DÚ 11 Inventarizace potřeby zatápění jiných jam po těžbě (kaolin, kamenivo) a DÚ 12 Zabezpečení návaznosti (kompability) s informačními systémy budovanými MŽP ČR a MZe ČR.
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