Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60, 265-274

https://doi.org/10.11118/actaun201260050265
Published online 2013-07-24

Analysis of trends of low flow in river stations in eastern Slovakia

Martina Zeleňáková1, Pavol Purcz2, Tatiana Soľáková1, Beáta Demeterová3

1Ústav environmentálneho inžinierstva, Stavebná fakulta, Technická univerzita v Košiciach, Vysokoškolská 4, 042 00 Košice, Slovenská republika
2Ústav technológie a manažmentu v stavebníctve, Stavebná fakulta, Technická univerzita v Košiciach, Vysokoškolská 4, 042 00 Košice, Slovenská republika
3Slovenský hydrometeorologický ústav, Regionálne stredisko Košice, Ďumbierska 26, 041 17 Košice, Slovenská republika

The availability of using hypothesis test techniques to identify the long-term trends of hydrological time series is investigated in this study. The aim is to analyse trends of low flows at streams in eastern Slovakia, namely Poprad, Hornád, Bodva, Bodrog river basins. The article presents a methodology for prediction of hydrological drought based on statistical testing of low stream flows by non-parametric statistical test. The main objective is to identify low flow trends in the selected 63 river stations in eastern Slovakia. The stations with human impacts are also evaluated. The Mann-Kendall non-parametric test has been used to detect trends in hydrological time series. Statistically significant trends have been determined from the trend lines for the whole territory of eastern Slovakia. The results indicate that the observed changes in Slovakian river basins do not have a clearly defined trend.

References

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