water balance

River basin digital twin: A tool for modelling adaptation measures for water retention in a landscape affected by climate change

RNDr. Jana Bernsteinová, Ph.D., doc. Ing. Evžen Zeman, CSc., Ing. Maxim Bernstein, Ing. Václav Rára, Ing. Milan Fischer, Ph.D., Ing. Pavel Tachecí, Ph.D. and prof. Mgr. Ing. Miroslav Trnka, Ph.D. – 5/2026

River basin digital twin technology is an advanced tool for assessing the effects of complex adaptation measures on the water balance in the context of ongoing climate change. The integrated, fully distributed, physically based MIKE SHE modelling system forms the basis of the digital twin developed for detailed simulation of the hydrological cycle. Using the Dyje River basin and the pilot upper Svratka catchment as case studies, specific measures to promote natural infiltration and enhance baseflow were tested, designed and quantified. The effects of climate change were assessed using an ensemble of 26 independent climate scenarios based on global climate models (CMIP6) for a 30-year period centred on 2050, compared with the historical reference period 1981–2010.

Forecast of water resource security in the Czech Republic by 2050

Ing. Petr Vyskoč, RNDr. Hana Prchalová, Ing. Marie Kozlová, Ing. Jiří Picek and Ing. Adam Vizina, Ph.D. – 4/2026

This article presents the methods and results of an assessment of the security of water abstraction and minimum flow rates through 2050, taking into account the potential impacts of climate change on water resources and projected water demand based on socioeconomic development forecasts. The study was conducted on a national scale. Water bodies defined for water planning purposes were selected as the minimum spatial scale.

Wetland evapotranspiration

Mgr. Karel Pátek and Doc. RNDr. Jiří Bruthans, Ph.D. – 3/2025

A wetland is an environment where water is readily available for vegetation, and therefore intensive evapotranspiration (ET) close to the potential ET value occurs. In addition, higher ET intensities can be expected in the future due to the observed increase in temperatures associated with climate change. The impact of wetland ET needs to be considered, for example, in restoration planning or hydrological mod-elling, and it is important to draw on the current knowledge provided by the large number of papers worldwide.

HYMOD-KZ database and deficit areas

Ing. Adam Vizina, Ph.D., Ing. Irina Georgievová, Ing. Petr Vyskoč, Ing. Eva Melišová, Ph.D., prof. Ing. Martin Hanel, Ph.D., prof. Mgr. Ing. Miroslav Trnka, Ph.D., Ing. Petr Pavlík and Ing. Milan Fischer, Ph.D. – 6/2024

This article describes the HYMOD-KZ database, available at https://shiny.vuv.cz/HYMOD-KZ/. The database provides detailed results of hydrological modelling and hydrological balance analysis of catchments (water bodies) for current and future climate conditions; it also includes updated deficit areas, the description of which is part of this article. This tool can serve as a foundation for water management ex-perts, academia, and the broader professional community as it provides outputs at the spatial resolution of water bodies. The graphical rep-resentation of results facilitates understanding of complex hydrological phenomena and supports decision-making in water management planning.

Potential of areas protected for surface water storage to mitigate the impacts of climate change on drinking water supply

Ing. Adam Vizina, Ph.D., Ing. Petr Vyskoč, Ing. Roman Kožín and Ing. Hana Nováková, Ph.D. – 1/2023

In the Czech Republic, areas morphologically, geologically and hydrologically suitable for surface water storage to mitigate the adverse effects of floods and droughts are defined through the General Plan for Surface Water Accu-mulation Areas. In the context of climate change, these locations create potential for possible adaptation measures. This article describes the assessment of the potential of selected sites for water supply under climate change condi-tions by means of hydrological and water balance modelling.

Balance of groundwater resources and demands for human consumption during climate change conditions

RNDr. Hana Prchalová, Ing. Petr Vyskoč, Ing. Adam Vizina, Ph.D. and Ing. Hana Nováková, Ph.D. – 5/2022

This article presents the results of the assessment of the possible impact of climate change on groundwater abstraction for human consumption between 2041 and 2060.

Preservation of drinking water demand from water reservoirs in climate change conditions

Ing. Adam Vizina, Ph.D., Ing. Petr Vyskoč, Ing. Martina Peláková, Ing. Jiří Picek, Ing. Adam Beran, Ph.D. and Ing. Roman Kožín – 3/2021

This study presents interim results of an evaluation of a potential climate change impact on the preservation of drinking water demand provided by water reservoirs in the timeframe of the year 2050. Hydrological and water sources and demands balance procedures have been applied, including modelling of the storage ability of water resources and water supply systems.

Water Balance – expression of the amount of water in landscape

RNDr. Ing. Jaroslav Rožnovský, CSc., RNDr. Filip Chuchma, Ing. Rostislav Fiala and RNDr. Mojmír Kohut, Ph.D. – 3/2018

Course of the weather in the last years shows that variability of the weather increases and this also leads to a higher frequency of floods, as well as drought. Drought, regardless of its type, means that there is a lack of water in landscape.

Hydrological balance and available water resource in the czech republic during hydrological drought

Ing. Adam Vizina, Ph.D., Ing. Radek Vlnas, prof. Ing. Martin Hanel, Ph.D., Ing. Ladislav Kašpárek, CSc., Ing. Eva Melišová, Ph.D., Ing. Adam Beran, Ph.D., Ing. Roman Kožín and Ing. Filip Strnad – 4/2017

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.

Impact of drought and water scarcity on water use assessment

Ing. Petr Vyskoč, RNDr. Hana Prchalová and Ing. Jiří Dlabal – 4/2017

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.

Modelling the effect of nature-related measures on the water balance in the Trkmanka basin

Ing. Roman Kožín, Ing. Petr Bašta and Ing. Vojtěch Moravec – 4/2017

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.