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Long-term changes in runoff from a small agricultural catchment

Author

Listed:
  • Kazimierz BANASIK

    (Department of River Engineering, Faculty of Civil and Environmental Engineering, Warsaw University of Life Sciences - SGGW, Warsaw, Poland)

  • Leszek HEJDUK

    (Department of River Engineering, Faculty of Civil and Environmental Engineering, Warsaw University of Life Sciences - SGGW, Warsaw, Poland)

Abstract

River runoff is an important indicator of environmental changes, which usually include climate and/or land use changes, and is also the basis of catchment water management. This study presents results of monitoring and analysis of 48-year precipitation and runoff from a small agricultural catchment located in central Poland. No land use changes in that period have been reported. Mean monthly distributions of precipitation and runoff for the long-term period showed that July was the wettest month in respect of precipitation and a drier one in respect of runoff, averaging 12.9% and 5.2% of their annual values, respectively. To evaluate the trend of three annual hydrometeorological parameters, i.e. precipitation, runoff and runoff coefficient, the Mann-Kendall test was applied. It indicated no trend in respect of precipitation, and decreasing trends of runoff and runoff coefficient at a 95% level of significance. Linear approximation of the annual runoff values indicated a decrease in runoff of ca. 1.2 mm per year for the analysed period. A few other functions were also used for better approximation of runoff data.

Suggested Citation

  • Kazimierz BANASIK & Leszek HEJDUK, 2012. "Long-term changes in runoff from a small agricultural catchment," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 7(2), pages 64-72.
    • Handle: RePEc:caa:jnlswr:v:7:y:2012:i:2:id:40-2011-swr
    DOI: 10.17221/40/2011-SWR
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    References listed on IDEAS

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    1. Zdeněk KLIMENT & Milada MATOUŠKOVÁ, 2008. "Long-term trends of rainfall and runoff regime in upper Otava River basin," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 3(3), pages 155-167.
    2. Pavel Kovář & Václav Kadlec, 2009. "Use of the KINFIL rainfall-runoff model on the Hukava catchment," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 4(1), pages 1-9.
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