The aim of this paper is to present results of study, which was aimed to evaluate the efficiency of reservoir capacities for updated input data. The study has focused on review of storage capacity, reliability of total reservoir outflow and analysis of flood protection capacity.
Hydraulics, hydrology and hydrogeology
Response variability of selected hydrological models to typical temporal distributions of short-term precipitation
The article presents a selection of outcomes of a three-years’ project named “Variability of Short-term Precipitation and Runoff in Small Catchments and its Influence on Water Resources Management“. Its aim was to provide to the public the newly derived typical temporal distributions of subdaily precipitation, also known as design rainfalls.
This article introduces a classification of small watersheds in the Czech Republic in terms of potential hydrological response to a set of design precipitation time series. Watershed classes as well as precipitation time series were derived as a partial result of a three-year project aimed at the design of typical soil conservation measures and small water management structures
In the field of GIS support for hydrological modelling there has been distinct evolution towards so called web services, which enable the users to obtain necessary input data for modelling in a fast and effective way. With respect to design rainfall data – one of the key component – the deficit has been considerable.
This article is focused on evolution of baseflow from part of the Bohemian-Moravian Highlands. This is a topical issue and, given the current situation, is also often discussed. The problem of groundwater and its recharge is an important (not only) hydrogeological problem, as climatic conditions in recent years, especially low precipitation, have a negative impact on groundwater recharge.
Monitoring and maintenance of water management infrastructure require knowledge of their reference state characterizing their design parameters. The reference state is derived primarily from the available project documentation, which is appropriately chosen to be converted to a digital model of the bottom terrain.
The first part the present study contains recommendations for the selection of representative observation period used for the calculation of average flow characteristics. This is the result of calculations based on time series of flows of the Vltava River in Prague with beginning in 1801.
The article describes hydrological and hydrogeological conditions in a small part of the Lišanský stream catchment near Rakovník. Natural conditions of this area have been influenced by human activity from the 15th century.
The article deals with the assessment of the hydrological balance in a monthly time step in the territory of the Czech Republic, which was divided into 133 sub-basins for the period 1981–2015.
The aim of the study is the regionalization of the Czech Republic with respect to drought characteristics in individual catchments.
Exist tools for water balance, time series of water abstractions and their season variability, difference between permitted and real abstractions and impact of drought in 2015 were analysed and assessed in subtask Impact of Drought on Water Use Assessment.
The effect of nature-related measures on the water balance was modeled in the Trkmanka basin. The basin is located in the Moravia, south-east region of the Czech Republic.
Policy of Protection from impacts of drought and water scarcity in the Czech Republic – consultation and processing
In the context of a severe drought period, which has started in 2014, an inter-ministerial commission WATER-DROUGHT was established to prepare a strategic policy document on protection from impacts of drought and water scarcity in the Czech Republic.
Within the framework of the sub-task “Evaluation of the impacts of drought on aquatic and water-bound organisms in surface water bodies“ a project involving activities to support the state administration in the drought issue in 2016 was prepared mainly a review of the potential impacts of drought on individual elements and indicators of water status assessment.
Currently, new projects of water transfers are discussed as a potential measure for dealing with drought and water scarcity. However, there are some issues related with this measure, which require to be considered.
The paper presents the preparatory phase of the draft of the drought management plan in the Czech Republic in the commenting process. The plan is a basic document of drought protection.
Stochastic management of the open large water reservoir with storage function with using evolution algorithm
Described models are used random forecasting period of flow line with different length. The length is shorter than 1 year. Forecasting period of flow line is transformed to line of managing discharges with same length as forecast.
As part of the measures aimed at the current issue of mitigating the flood damage caused by the occurrence of a significant drought, attention was focused, among other things, on water transfers between sub-basins of watercourses.
River Basin Management Plans data processing enables obtain not only detailed summary of results, but also appreciates relations between partial results and their significance to achievement of specified objectives.
Process of implementation of Directive 2007/60/EC on the assessment and management of flood risks in conditions of the Czech Republic
The purpose of the Directive 2007/60/EC on the Assessment and Management of Flood Risks (Flood Directive) is to prevent or reduce negative consequences of floods by preparing flood risk management plans.
Surface water body typology category river in the 1st and 2nd cycle of River Basin Management Plans and its consequence to ecological status assessment
Surface water body delineation and setting a typology are one of the initial steps during Water Framework Directive implementation (WFD) . The first delineation and typology was prepared in 2004–2005 for the first plans, but all the results were significantly changed in the second cycle 2009–2010.
Reporting of River Basin Management Plans under Water Framework Directive in 2016 in the Czech Republic
In 2015 the River Basin Management Plans (RBMP’s) for the 2nd planning cycle under Water Framework Directive were designed and approved. According to the Directive the copies of the RBMP’s were sent to the Commission by 22. 3. 2016.
Water planning is a systematic conceptual activity which implements the requirements of the Water Framework Directive.
This article pursues the hydraulic research of flow of the curve in the Podkrušnohorský canal (PKP). Measurements were conducted on a physical model.
The article deals with issue of water reservoir banks stability in places where the abrasion is developed, and possibility of using active anti‑abrasive protection that is designed from natural materials.
The article deals with the development of agriculture bare soil surface using the stereophotogrammetric method. It describes and compares the development of selected soil characteristics investigated on four types of field cultivation.
In recent years, it is possible to observe more frequent occurrence of hydrological extremes, there is a more frequent occurrence of floods and deepening drought.
In the presented study we tested the selected sets of linear and nonlinear regression models, that describe the relationships between the selected parameters of hydrological model Bilan, which were estimated using the meteorological, hydrological series, and between the retention characteristics estimated using the selected geomorphological patterns of the river basin.
The aim of the project “QJ1520268 The new procedures of optimization system integrated protection area in the context of their economic sustainability“ is to create a design optimized system of anagement of water and soil resources in the long term, including balancing the soil‑plant‑atmosphere system and also in order to reduce the impact of climate change on agricultural ecosystem, which is highly topical issue today.
Characteristics determining the stability of woody debris on the example of Morava River in the Litovelské Pomoraví
Wood is an important part of streams, affecting their hydraulic, morphological and biological features. For the stream management and flood risk reduction it is important to know the characteristics that increase the stability of wood and prevent its flushing at high water stages.
In the Karlovy Vary district, areas with lack of drinking and industrial water were identified. Since 2015, in cooperation of TGM WRI, p. r. i., and state enterprise Povodí Ohře a project called „Increasing water resources availability in selected regions of Karlovy Vary district“ is financed
The aim of Council Directive 91/176/EEC regarding the protection of waters against pollution caused by nitrates from agricultural sources  (hereinafter „Nitrates Directive“) is to reduce water pollution coming from agricultural sources and to prevent further such pollutions in order both to provide good‑quality water supplies and to protect surface water against eutrophication.
Bias correction of precipitation and temperature from regional climate models – the impact on runoff modelling
Hydrological modelling is often used for assessment of climate change impacts on water resources. Inputs into the hydrological model are represented by precipitation and temperature based on simulations of climate models.
Air temperature and precipitation on the meteorological station Bučnice in the Upper Metuje catchment
The paper deals with the analysis of time series of air temperature and precipitation at the meteorological station Bučnice in eastern Bohemia, which is operated by the TGM Water Research Institute.
Strategy for protection against negative impacts of floods and erosion phenomena by nature‑friendly measures in the Czech Republic
The article describes reasons and circumstances why the project “Strategy of flood and erosion protection by natural water retention measures“ was initiated.
One part of the project “Strategy for protection against negative impacts of floods and erosion phenomena by naturefriendly measures in the Czech Republic“ was assessment of actual runoff conditions in the Czech Republic by runoff curve number method.
A complex system of flash flood and erosion protection measures was designed for almost 80% of the Czech Republic. It is made mainly from natural water retention measures on agricultural land and water courses.
Process of evaluation of runoff conditions and determination of design flows in the project Strategy for protection against the negative impacts of floods and erosion events by naturefriendly measures in the Czech Republic
Project The Strategy for protection against the negative impacts of floods and erosion events by naturefriendly measures in the Czech Republic comprehensively addresses the possibility of increasing water retention in the landscape.
Article introduces presentation portal “Voda v krajině“ (www.vodavkrajine.cz) as an information source about natural water retention measures.
Summary Flood risk of levee protected areas stems from the possibility of levee failure due to overtopping, breaching or uncontrolled seepage. In most cases, levee breaching leads to highest damages as such events occur suddenly and can hardly be forecasted. In this article, levee failure is referred to levee breaching only. Whenever levees break during… Read more »