Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 265-274 | DOI: 10.11118/actaun201260050265

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

Martina Zeleňáková1, Pavol Purcz2, Tatiana Soµáková1, Beáta Demeterová3
1 Ústav environmentálneho inľinierstva, Stavebná fakulta, Technická univerzita v Koąiciach, Vysokoąkolská 4, 042 00 Koąice, Slovenská republika
2 Ústav technológie a manaľmentu v stavebníctve, Stavebná fakulta, Technická univerzita v Koąiciach, Vysokoąkolská 4, 042 00 Koąice, Slovenská republika
3 Slovenský hydrometeorologický ústav, Regionálne stredisko Koąice, Ďumbierska 26, 041 17 Koąice, 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.

Keywords: low flow, river station, trend analysis, Mann-Kendall test
Grants and funding:

The Centre was supported by the Slovak Research and Development Agency under the contract No. SUSPP-0007-09.

Received: April 19, 2012; Prepublished online: July 24, 2013; Published: July 30, 2013  Show citation

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Zeleňáková, M., Purcz, P., Soµáková, T., & Demeterová, B. (2012). Analysis of trends of low flow in river stations in eastern Slovakia. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 60(5), 265-274. doi: 10.11118/actaun201260050265
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