Changes of flood risk on the northern foothills of the Tatra Mountains

Kundzewicz, Zbigniew W.; Stoffel, Markus; Wyżga‬‬, Bartłomiej; Ruíz-Villanueva, Virginia; Niedźwiedź, Tadeusz; Kaczka, Ryszard J.; Ballesteros‐Cánovas, Juan Antonio; Pińskwar, Iwona; Łupikasza, Ewa; Zawiejska, Joanna; Mikuś, Paweł; Choryński, Adam; Hajdukiewicz, Hanna; Spyt, Barbara; Janecka, Karolina

doi:10.1007/s11600-017-0075-0

Cited by 16 publications

(11 citation statements)

References 38 publications

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“…Meresa et al ( 2017 ) indicated a positive trend of different indices derived from hydroclimatic projections for most of Polish and Norwegian catchments. In the light of climate changes having been taking place for some time, the analysis of characteristic flow trends for rivers has become an essential factor in the effective water management planning in a given region (Kundzewicz et al 2017 ; Walega et al 2016 ).…”

Section: Resultsmentioning

confidence: 99%

Combined use of the hydraulic and hydrological methods to calculate the environmental flow: Wisloka river, Poland: case study

Książek

Woś

Florek

et al. 2019

Environ Monit Assess

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The scarcity of water can result in a direct conflict between the protection of aquatic resources and water use. For many agencies, environmental flow (EF) methods are essential in environmental impact assessments and in the protection of important fisheries resources. The objective of this paper is to compare selected hydrological and hydraulic methods and determine the scientifically acceptable and cost-effective way to environmental flow within a section of a mountain river with high naturalness, on the example of the Wisłoka. In this paper, environmental flow was calculated using conventional hydrological methods: Tennant’s, Tessman’s, flow duration curve and hydraulic methods, wetted perimeter method (WPM) and method based directly on ichthyofauna habitat requirements (spawn and migration). The novelty is the combined use of the hydraulic and hydrological methods which relates to flow hydraulics based directly on ichthyofauna habitat conditions. The hydraulic methods provide lower values of environmental flow in comparison with the hydrological methods. The key issue in the use of the hydraulic methods is the choice of criteria. The development of the required set of parameters while taking into account their seasonal nature shifts the method toward habitat modeling methods. However, the scope of habitat requirements of ecosystems must be defined, including the set of aquatic organisms and watercourse type before a hydraulic method may be widely used. Being generally low-cost and simple, the methods presented in this paper can be applied in the water management legislative process.

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Section: Resultsmentioning

confidence: 99%

Combined use of the hydraulic and hydrological methods to calculate the environmental flow: Wisloka river, Poland: case study

Książek

Woś

Florek

et al. 2019

Environ Monit Assess

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“…Generally, the uncertainty in flood inundation modeling can be categorized into seven major types: (1) topographic data, (2) hydrologic data, (3) data for preliminary estimation of roughness, (4) method applied for final roughness calibration, (5) method applied for estimation of maximum flows, (6) structure of the applied model and (7) transition of the model results to the maps (e.g., Refsgaard and Storm 1990;Cook and Merwade 2009;Calenda et al 2009;Liu and Merwade 2018). Some of the above-listed elements become less uncertain due to the development of the technology, e.g., increasing accuracy and resolution of LIDAR data for DEM elaboration (e.g., Gilles et al 2012;Sampson et al 2012;Walczak et al 2013;Laks et al 2017), involvement of satellite and remote sensing data (e.g., Jung et al 2014;Arseni et al 2017), elaboration of more detailed databases on flood events (e.g., Kundzewicz et al 2017) and broader availability of more accurate hydraulic models (e.g., Szydłowski et al 2013;Gąsiorowski 2013;Brunner 2016a;Kolerski 2018). A specific problem is the uncertainty related to the channel and floodplain roughness (e.g., Dimitriadis et al 2016;Pappenberger et al 2008;Engeland et al 2016;Liu and Merwade 2018).…”

Section: Introductionmentioning

confidence: 99%

Analysis of extreme flow uncertainty impact on size of flood hazard zones for the Wronki gauge station in the Warta river

et al. 2019

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In this paper, the impact of maximum flow uncertainty on flood hazard zone is analyzed. Two factors are taken into account: (1) the method for determination of maximum flows and (2) the limited length of the data series available for calculations. The importance of this problem is a consequence of the implementation of the EU Flood Directive in all EU member states. The factors mentioned seem to be among the most important elements responsible for potential uncertainty and inaccuracy of the developed flood hazard maps. Two methods are analyzed, namely the quantiles method and the maximum likelihood method. The maximum flows are estimated for the Wronki gauge station located in the reach of the Warta river. This simple river system is located in the central part of Poland. The length of the available data is 44 years. Hence, the series of the lengths 40, 30 and 20 years are tested and compared with reference calculations for 44 years. The hydrodynamic model HEC-RAS is used to calculate water surface profiles in steady state flow. The Python scripting language is applied for automation of HEC-RAS calculations and processing of final results in the form of inundation maps. The number of trials for each factor is not huge to keep the presented methodology useful in practice. The chosen measure of uncertainty is the range of variability for maximum flow values as well as inundation areas. The estimated values stressed the great importance of the factors analyzed for the uncertainty of the maximum flows as well as inundation areas. The impact of the data series length on the maximum flows is straightforward; a shorter data series gives a wider range of variability. However, the dependencies between other factors are more complex. Hence, the application of methodology based on the simulation and GIS data processing for assessment of this problem seems to be quite a good approach.

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“…The papers published under this Topical Issue can be classified into those describing observed changes in flow patterns in catchments (Kundzewicz et al 2017b;Somorowska 2017), papers presenting changes in the trends of future flow projections Piniewski et al 2017). The paper by Doroszkiewicz and Romanowicz (2017) presents issues related to adaptation to floods under future climatic conditions.…”

mentioning

confidence: 99%

“…There are two papers in this issue that directly deal with the observed flow patterns (those by Somorowska 2017; Kundzewicz et al 2017b). Somorowska (2017) describes the trends in flow regime in a low-land catchment, Lasica.…”

mentioning

confidence: 99%