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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Volume 17, issue 1
Hydrol. Earth Syst. Sci., 17, 201–209, 2013
https://doi.org/10.5194/hess-17-201-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
Hydrol. Earth Syst. Sci., 17, 201–209, 2013
https://doi.org/10.5194/hess-17-201-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 22 Jan 2013

Research article | 22 Jan 2013

A model based on dimensional analysis for prediction of nitrogen and phosphorus concentrations at the river station Ižkovce, Slovakia

M. Zeleňáková1, M. Čarnogurská2, M. Šlezingr3, D. Słyś4, and P. Purcz5 M. Zeleňáková et al.
  • 1Technical University of Košice, Department of Environmental Engineering, Košice, Slovakia
  • 2Technical University of Košice, Department of Power Engineering, Košice, Slovakia
  • 3Mendel University of Brno, Department of Landscape Formation and Protection, Brno, Czech
  • 4Rzeszów University of Technology, Department of Infrastructure and Sustainable Development, Rzeszów, Poland
  • 5Technical University of Košice, Department of Applied Mathematics, Košice, Slovakia

Abstract. The aim of this paper is to develop a model for pollutant concentration prediction in a stream. The developed model that determines nitrogen and phosphorus concentrations in a river is based on a dimensional analysis. Application of dimensional analysis to water quality modelling is presented, pointing out possibilities of applying this methodology in water quality research. We investigate how dimensional analysis can be applied to water quality modelling and which benefits it can bring to researchers in this area. For modelling water quality in a water stream it is essential to know the parameters that influence water quality. The relevant parameters are flow of water in the river (discharge), its catchment area, velocity of water in the stream, temperature of water, temperature of air and measured concentrations of the pollutant – nitrogen and phosphorus. A sensitivity analysis shows that the concentration of pollutant in water stream is sensitive to changes in both water and air temperatures. The model performs well when average values are used; the prediction error increases when the single concentration values are considered. The model was developed, calibrated and evaluated using measured data from the river station Ižkovce, River Laborec in eastern Slovakia.

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