Facebook Instagram Twitter RSS Feed PodBean Back to top on side

Information Page of SAS Organisation


Institute of Hydrology

International Projects

IHP-IX Danube - IHP-IX Regional cooperation of the Danube countries

IHP-IX Regionálna spolupráca podunajských krajín

Duration: 1. 1. 2022 - 31. 12. 2029
Evidence number:IHP-IX Danube
Program: UNESCO
Project leader: RNDr. Miklánek Pavol CSc.
Annotation:Anotácia (EN) In 1971, the hydrologists of 8 Danube Countries launched on a voluntary basis a regional hydrological cooperation aiming to produce consistent hydrological information about the whole Danube Catchment with an area of 817,000 km². Since 1987, this cooperation has been carried out in the framework of the International Hydrological Programme (IHP) of UNESCO, so far under the coordination of the IHP National Committees of Germany, Austria, Slovakia and Hungary. The cooperation of the Danube countries within framework of the IHP of UNESCO is based on the one hand on project work and on the other on regular conferences. The aim of the conferences is to serve as a forum for discussion and exchange of views among the specialists involved.

WATSON - Water isotopes in the critical zone: from groundwater recharge to plant transpiration

Izotopy vody v kritickej zóne: od dopĺňania zásob podzemnej vody po transpiráciu rastlín

Duration: 24. 9. 2020 - 23. 9. 2024
Evidence number:CA19120
Program: COST
Project leader: RNDr. Holko Ladislav PhD.
Annotation:Understanding water exchange within the critical zone, i.e.the dynamic skin of the Earth that extends from vegetation canopy to groundwater, is vital for addressing key environmental problems linked to the sustainable management of water resources. The main aim of WATSON is to collect, integrate, and synthesize current interdisciplinary scientific knowledge on the partitioning and mixing of water in the critical zone taking advantage of the unique tracing capability of water isotopes. These efforts will allow going beyond the current fragmented knowledge providing a novel conceptual framework on the interactions between groundwater recharge, soil water storage, and vegetation transpiration useful for water resources management across a variety of climatic settings. The Action activities are based on a network of early career and senior scientists from different complementary disciplines who are experts in the use of water isotopes, and stakeholders from governmental agencies and private companies from 19 COST countries and one Near Neighbour Country. The ultimate goal of the network is to build capacity in the use of robust isotope approaches for water resource management.

Impact of willow biochar application on hydro–physical and physicochemical properties of the silt loam soil

Vplyv aplikácie biouhlia vyrobeného z vŕby na hydro–fyzikálne a fyzikálno–chemické vlastnosti prachovitohlinitej pôdy

Duration: 1. 1. 2023 - 31. 12. 2024
Evidence number:PAS-SAS-2022-05
Program: Mobility
Project leader: Ing. Toková Lucia PhD.
Annotation:Adverse changes in the agroecosystems are related to the progressive degradation of soils, the intensifying effects of climate change, and the excessive use of mineral fertilizers. One of the proposed solutions for soil quality protection is biochar obtained in the pyrolysis process of plant biomass. However, there is a need for a thorough and consistent characterization of biochar used and the effects of their agricultural management. The main goal of the cooperation is to investigate the effect of biochar' application on physicochemical and hydro-physical properties of silty loam soil. We hypothesize that the use of biochar will affect changes in retention, water transport, porosity, and stability of aggregates. We also assume that the observed changes will depend on the type, concentration, and size of the biochar fraction.

Mitigating the effects of climate change on the different land use sectors in river basins in Georgia

Zmiernenie dôsledkov klimatickej zmeny v rôznych sektoroch využívania krajiny v povodiach riek v Gruzínsku

Duration: 1. 1. 2023 - 31. 12. 2024
Evidence number:Open-Mob-2022-04
Program: Open Mobility
Project leader: Mgr. Rončák Peter PhD.
Annotation:Climate change in the South Caucasus countries is clearly evident. Recent research confirms that average annual air temperatures are steadily increasing and extreme weather events, such as storms and heatwaves, have been intensifying over the last few decades. Georgia is prone to a range of hazards such as landslides, floods, hydrological and soil drought, which are exacerbated by climate change, and which result in serious damage to infrastructure, casualties and economic losses. The main goal of the project is to contribute to increasing sustainability and improving conditions in water management, forestry and agriculture by proposing adaptation measures to mitigate the effects of climate change. This research will be carried out in less developed areas in terms of adaptation and climate change mitigation. The result will be, in cooperation with a NEA partner, a proposal for measures to address climate change mitigation for water management, forestry and agriculture.

National Projects

Biochar as a potential climate change adaptation tool

Biouhlie ako možný adaptačný nástroj pri zmene klímy

Duration: 1. 1. 2024 - 31. 12. 2027
Program: VEGA
Project leader: Ing. Vitková Justína PhD.
Annotation:One of the main challenges in adaptation to climate change is soil water retention in land. Positive effect of biochar on hydrophysical and water retention properties of sandy soil has been shown to be significant in our previous research. In this project we aim to validate these results in field conditions. There are sites at Záhorská lowland (Slovakia), with both sandy and water-repellent sandy soils. Our aim is to carry out our research on both types of soil. Monitoring of soil moisture using gravimetric method and monitoring of saturated hydraulic conductivity will be carried out in these areas throughout the year on a regular basis. We will also continue in long-term monitoring of soil moisture and soil temperature after biochar application on the agriculturally used silt loam soil during the growing season. The project will also investigate the impact of biochar and climate change on soil erosion.

BCsoil - Biochar as a soil additive for sustainable agriculture in conditions of climate change

Biouhlie ako pôdne aditívum pre trvaloudržateľné poľnohospodárstvo v podmienkach klimatickej zmeny

Duration: 1. 7. 2022 - 30. 6. 2026
Evidence number:APVV-21-0089
Program: APVV
Project leader: Ing. Šurda Peter PhD.
Annotation:To reach effective and sustainable soil management, we need to set up correct priorities in evaluating soil properties understand the causes of decreasing or low soil fertility and establish the strategies for soil fertility improvements. The Terra Preta de Índio phenomenon has become the main inspiration of many scientists during the last two decades or so, with the main focus of their research on the role of biochar in the amelioration of soil properties and the question whether the effect observed in Amazonia can be replicated in other areas of the world. The actuality of the submitted project consists in shifting the boundaries of knowledge about the long-term impact of biochar application to soil in the Slovak Republic. Biochar is currently part of the new European Fertilizer Directive (Annex A). However, such legislation is missing in Slovakia, as well as continuous long-term research of its application to soil. The main aim of this project is a complex long-term research of the biochar application to soil at the conditions of a field experiment (including also regional modeling studies) and subsequently the transfer of results into practice through two cooperating companies. The research team of the proposed project has a field experiment where the effect of biochar (meeting all environmental standards of European Biochar Certificate-EBC) on soil is studied at field site Malanta (Nitra). This experiment was established in 2014 and is still ongoing, therefore when containing, it will represent a character of long-term research. These results will be then the basis for the production of biochar (EBC) and substrates containing biochar for the partner companies. Subsequently, biochar (and substrates) produced by these companies will be tested by the project team at the field conditions. The final application result of the project partners (companies) will be the subsequent introduction of certified biochar (and substrates) on the market in Slovakia.

Comprehensive analysis of the quantity and quality of water regime development in streams and their mutual dependence in selected Slovak basins

Komplexná analýza vývoja režimu kvantity a kvality vody v tokoch a ich vzájomného vzťahu vo vybraných povodiach Slovenska

Duration: 1. 1. 2023 - 31. 12. 2026
Evidence number:2/0015/23
Program: VEGA
Project leader: Ing. Bačová Mitková Veronika PhD.
Annotation:Climate change and anthropogenic activity affect the components of the hydrological regime of the stream with a possible negative impact on water quantity and quality. It is necessary to know and analyse changes and the mutual dependence of the quantitative characteristics and water quality indicators. This knowledge enables prevention and response to a crisis phenomenon, which helps quickly and correctly eliminate its consequences. The presented project aims to provide scientific data for evaluating the impact of possible changes in the runoff regime and water quality in streams of selected Slovak basins with respect to extreme hydrological situations. We will seek answers related to the impacts of climate change and anthropogenic activity on quantitative and qualitative conditions and their consequences by using appropriate scientific and mathematical methods. These can provide a base for the mitigation of hydrological extremes. The archival data and data from our experimental measurements will be used.

CONTROL - Connectivity and flood runoff dynamics in headwater catchments of Slovakia

Konektivita a dynamika tvorby povodňového odtoku vo vrcholových povodiach Slovenska

Duration: 1. 7. 2020 - 30. 6. 2024
Evidence number:APVV-19-0340
Program: APVV
Project leader: RNDr. Holko Ladislav PhD.
Annotation:Hydrological connectivity of subsurface and surface storages or different catchment elements within a landscape is a crucial factor in the complex process of flood flow generation on hillslopes. The project aims to develop modelling systems, which respects observed connectivity patterns based on experimental monitoring of runoff generation in pilot headwater catchments in four typical forested and agricultural hydrological environments. Instead of building complex representations of structural connectivity elements in 3D as in conventional distributed models, innovative hybrid distributed conceptual modelling representations of the governing processes and controls will be sought. Typical patterns of the observed dynamics of processes will be conceptually represented in a two-level distributed modelling framework. At the first level of spatial variability, based on the monitored processes, observed source areas and connectivity patterns, the hydrological response unit (HRU) concept will be used with spatially homogeneous parameterization, which will be allowed to change in time. To respect the spatial variability of state of the catchment, within these units, grid-based conceptual models will be driven by spatially distributed inputs.

Quantification and analysis of water balance components from lysimeter measurements and numerical simulations

Kvantifikácia a analýza zložiek vodnej bilancie z lyzimetrických meraní a numerických simulácií

Duration: 1. 1. 2024 - 31. 12. 2027
Evidence number:2/0025/24
Program: VEGA
Project leader: RNDr. Tall Andrej PhD.

Modeling the influence of landscape revitalization measures on the water regime

Modelovanie účinkov revitalizačných opatrení v krajine na vodný režim územia

Duration: 1. 1. 2024 - 31. 12. 2024
Program: Iné projekty
Project leader: Mgr. Koczka Bara Márta PhD.
Annotation:Surface water (SW) and groundwater (GW) are the main water resources in natural environment. These two components of the hydrological cycle are interconnected and are affecting each other, therefore changes of quantity or quality in either of them will impact the other. Landscape management and revitalization measurements influence the regime of GW-SW system. The aim of this project is modelling the impacts of revitalization measures on the water regime in the adjacent areas. In my previous work (before the maternity leave) I was already dealing with GW-SW modelling. In this project, but also in my further work I would like to focus on modelling various aspects of GW-SW interaction, and to enhance my knowledge and gain new skills in this topic. The funds of this project will be partially used for obtaining the necessary computer equipment and for updating modelling software licenses.

Optimization of adaptation measures for extreme torrential rainfall in urbanized catchments

Optimalizácia adaptačných opatrení na extrémne prívalové zrážky v urbanizovaných povodiach

Duration: 1. 1. 2024 - 31. 12. 2027
Evidence number:2/0140/24
Program: VEGA
Project leader: doc. Ing. Sokáč Marek PhD.
Annotation:The project is aimed at developing a methodology for an optimal and systemic approach in the implementation of adaptation measures for extreme - torrential rainfall in urban areas, which is currently absent in Slovakia. The content of the project is the modeling of the consequences of extreme torrential rainfall in the context of ongoing climate change for various scenarios of the implementation of adaptation measures (green/grey infrastructure). The results of modeling and the synthesis of the results of individual scenarios will be the basis for the development of a methodology for the effective implementation of adaptation measures in urban catchments with the aim of achieving the efficiency and effectiveness of the proposed measures, as well as with the aim of limiting the transport of pollution to recipients in accordance with the requirements of the upcoming amendment to EU Directive no. 91/271/EC.

DETECTIVES - Regional detection, attribution and projection of impacts of climate variability and climate change on runoff regimes in Slovakia

Regionálna detekcia, atribúcia a projekcia dopadov variability klímy a klimatickej zmeny na režim odtoku na Slovensku

Duration: 1. 7. 2021 - 30. 6. 2025
Evidence number:APVV-20-0374
Program: APVV
Project leader: RNDr. Pekárová Pavla DrSc.
Annotation:Rich physiographic conditions in Slovakia result in regionally different runoff regimes driven by climate variability and impacted by climatic and socioeconomic changes in the recent past. The first scientific goal of project is therefore to develop and apply a set of approaches for the detection and attribution changes in the past hydrological regime with annual, monthly and daily temporal resolution. Detection will be based on new methods going beyond standard statistics (trend and breakpoint analysis, correlation analysis, etc.) using approaches such as nonlinear time series models and copula function based dependence structures. Attribution with the use of rainfall runoff modelling will attempt to distinguish anthropogenic factors (as land-use change) and signals of a changing climate. Recent climate change projections in Slovakia do not allow for a comprehensive assessment of impacts on the water regime. The second goal is to develop new projections of future climate and hydrology including uncertainty assessment with the aim to gain new insights into the uncertainties of future regime changes in hydrometeorological processes in Slovakia. Comparison of regime changes from the instrumental period and the projections will serve adaptation measures in water management.
Project web page:pavla.pekarova.sk

DRIWADIR - Technological Methods for Removal of Endocrine Disruptors and Elimination of Cyanobacteria Occurrence and Their Undesirable Effects in Water Sources to Ensure Drinking Water Quality according to the Increasing Demands of New EU Drinking Water Directive

Technologické postupy na odstránenie endokrinných disruptorov a elimináciu výskytu siníc a ich nežiaducich účinkov vo vodárenských zdrojoch pre zabezpečenie kvality pitnej vody podľa zvyšujúcich sa nárokov novej smernice EÚ pre pitnú vodu

Duration: 1. 7. 2023 - 30. 6. 2027
Evidence number:APVV-22-0610
Program: APVV
Project leader: Ing. Velísková Yvetta PhD.
Annotation:The goal of the project is to monitor the occurrence of endocrine disruptors, cyanobacteria and microplastics in water sources and to verify the possibilities of their removal. The selection of microcontaminants is based on the new parameters in the approved EU Directive no. 2020/2184 for drinking water, which entered into force in January 2021. Within the project, various methods of removing selected endocrine disruptors, cyanobacteria and microplastics from water will be tested. In the case of endocrine disruptors of ozone, UV radiation followed by adsorption on granulated activated carbon, adsorption on activated carbon, membrane technologies and conventional water treatment with coagulation. In the case of cyanobacteria, also ultrasound at different frequencies, microsieves in conjunction with UV radiation, compressed air flotation, multi-material filtration, adsorption, and membrane ultrafiltration. The mentioned methods will be implemented on model devices in laboratory conditions, compared with technological processes operated in water treatment plants in Slovakia. Based on the model tests, the achieved results will be evaluated and an optimal technological method will be proposed for the removal of endocrine disruptors, cyanobacteria, cyanotoxins and microplastics to ensure the quality of drinking water, and an evaluation of the impact of their occurrence in raw water on the efficiency of water treatment Based on selected indicators, monitor changes in the quality of surface water in different seasons and in different hydrological conditions, as well as the impact of climate change on water quality. In the case of water reservoirs, such monitoring is rare. Based on available data on water quality in selected sampling profiles and mapping of hydraulic parameters in the reservoir, simulate the occurrence and duration of adverse hydrological conditions affecting the quality of raw water with an emphasis on the period of real occurrence of crisis situations.

Effect of microplastics from mulch films on soil hydrological processes and crop growth

Vplyv mikroplastov z mulčovacích fólií na hydrologické procesy v pôde a rast plodín

Duration: 1. 1. 2024 - 31. 12. 2027
Evidence number:VEGA 2/0037/24
Program: VEGA
Project leader: Ing. Lichner Ľubomír DrSc.
Annotation:Microplastics affect hydrological processes, soil properties and crop growth in soil, and the magnitude of their impact depends on the types of plastic and levels of microplastic load. In this project, we will investigate the impact of microplastics (low-density polyethylene, LDPE, and polylactide, PLA) and their biodegradation on hydrological processes (infiltration, retention and evaporation) and their characteristics (hydraulic conductivity, sorptivity, retention capacity, cumulative and relative evaporation) in three soils (Haplic Luvisol, Chernozem and Arenosol), other properties (bulk density, persistence and severity of water repellency) of these soils, and growth characteristics (weight of above-ground and underground parts of crops and basic parameters of fluorescence) of crops (radish and spring wheat) grown in these soils in pots in a greenhouse.


Vplyv ohrevu na hydrofyzikálne a chemické vlastnosti lesnej pôdy

Duration: 1. 1. 2023 - 31. 12. 2026
Program: VEGA
Project leader: Mgr. Zvala Anton PhD.

Impact of ongoing forest change on the hydrological cycle in mountain basins

Vplyv prebiehajúcej zmeny lesa na hydrologický cyklus v horských povodiach

Duration: 1. 1. 2023 - 31. 12. 2026
Program: VEGA
Project leader: Ing. et Ing. Sleziak Patrik PhD.
Annotation:A widespread dieback of forest ecosystems occurred in the highest mountains of Slovakia in the last decade due to rising air temperatures, windfalls and bark beetles outbreaks. Forest dieback and subsequent regeneration affect the hydrological regime in mountain basins, but they can also affect the runoff regime in the downstream areas. The project aims to evaluate the impact of forest change on the hydrological cycle in the mountain basin of the Jalovecký Creek in the Western Tatra Mountains. Experimental research should provide the parameters of a naturally dying and regenerating forest usable in hydrological models, which would allow a more accurate assessment of the impact of forest change on the hydrological cycle. The project will also examine the influence of changing forest on the soil moisture. The approach will be involve measurements of soil moisture, runoff and vegetation characteristics in representative areas, analysis of satellite data and modelling of the hydrological cycle in the mountains.

VEGA - Seasonal variations of hydrodynamic and morphological parameters in lowland vegetated rivers

Zmeny hydrodynamických a morfologických ukazovateľov riečneho koryta v dôsledku zarastania vodnou vegetáciou v nížinných oblastiach

Duration: 1. 1. 2023 - 31. 12. 2026
Evidence number:2/0028/23
Program: VEGA
Project leader: Mgr. Schügerl Radoslav PhD.
Annotation:Nowadays, climate change is a big threat to human life due to high temperatures. The more the temperature rises, the more aquatic vegetation grows and spread in the rivers, even in out seasons. The presence of aquatic vegetation affects the morphology of the river bed and the hydrodynamic indicators of flow. To investigate the effects of the presence of vegetation on the river bed morphology and hydraulic resistance, flow velocity measuring plays an important role in better quantifying discharge in vegetated lowland rivers. On another side, velocity reduction increases sedimentation within the vegetated beds and increases erosion and sediment sorting in areas of higher flow during summer. In a nutshell, the project is focused on quantifying the impact of aquatic vegetation on hydrodynamic and morphological variations of the lowland rivers impacted by aquatic vegetation during all season. Also, we plan to investigate the influence of nutrient content and temperature on the growth rate of vegetation.

Projects total: 17