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Water 2016, 8(9), 394; doi:10.3390/w8090394

Analysis of the Course and Frequency of High Water Stages in Selected Catchments of the Upper Vistula Basin in the South of Poland

1
Department of Sanitary Engineering and Water Management, University of Agriculture in Krakow, Mickiewicza 24-28 Street, Krakow 30-059, Poland
2
Department of Land Reclamation and Environmental Development, University of Agriculture in Krakow, Mickiewicza 24-28 Street, Krakow 30-059, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Athanasios Loukas
Received: 12 July 2016 / Revised: 31 August 2016 / Accepted: 1 September 2016 / Published: 10 September 2016
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Abstract

The paper presents an analysis of the course and frequency of high water stages in selected catchments of the upper Vistula basin in the south of Poland. The following rivers were investigated: the Dunajec–Nowy Targ-Kowaniec cross-section, the Rudawa–Balice cross-section, the Kamienica–Nowy Sącz cross-section, the Wisłok–Tryńcza cross-section and the San–Przemyśl cross-section. Daily flows from the years 1983–2014 were used to determine maximum annual flows and maximum flows per summer and winter half-year. Selected floods were analyzed with reference to the following metrics: POTX (mean size of the flow determined based on high water stages exceeding the assumed threshold value), POT3F (number of high water stages exceeding the threshold value for each hydrological year), WPOT3F (number of high water stages exceeding the threshold value for the winter half-year and), LOPT3F (number of high water stages exceeding the threshold value for the summer half-year). The determined metrics were analyzed for trend (Mann-Kendall test), homogeneity (Kruskal-Wallis test), and heteroscedasticity (Levene test). Additionally, periodograms were used to determine periodicity of time series for maximum annual flows. The resulting computations indicated upward trends in the analyzed flood metrics but they were not significant in any case. Therefore, in the years 1983–2014 no factors were observed that would significantly affect the size and frequency of high water runoff from the investigated catchments. View Full-Text
Keywords: peak over threshold; flood; Mann-Kendall’s test; homogeneity peak over threshold; flood; Mann-Kendall’s test; homogeneity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Walega, A.; Młyński, D.; Bogdał, A.; Kowalik, T. Analysis of the Course and Frequency of High Water Stages in Selected Catchments of the Upper Vistula Basin in the South of Poland. Water 2016, 8, 394.

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