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Changes in a river's regime of a watercourse after a small water reservoir construction

Author

Listed:
  • Rostislav Fiala

    (Czech Hydrometeorological Institute, Brno, Czech Republic)

  • Jana Podhrázská

    (Research Institute for Soil and Water Conservation, Brno, Czech Republic)

  • Jana Konečná

    (Research Institute for Soil and Water Conservation, Brno, Czech Republic)

  • Josef Kučera

    (Research Institute for Soil and Water Conservation, Brno, Czech Republic)

  • Petr Karásek

    (Research Institute for Soil and Water Conservation, Brno, Czech Republic)

  • Pavel Zahradníček

    (Czech Hydrometeorological Institute, Brno, Czech Republic)

  • Petr Štěpánek

    (Czech Hydrometeorological Institute, Brno, Czech Republic)

Abstract

The paper deals with the analysis of a river's regime of a small watercourse and the evaluation of its changes after the construction of a small water reservoir. The aim of the work was to analyse 12 years of flow rate measurements at two profiles of a small watercourse, between which a small water reservoir was built, in the middle of the period of the measurements. The analysis uses traditional characteristics (average flow rate, discharge volume), as well as modern indices from applied hydrology (Richards-Baker flashiness index, hydrogram pulse analysis), which study the variability of the flow rate in hourly and daily intervals. The evaluation showed that at the average flow rate, the effect of the water reservoir was the smoothening of the peak flow rates and prolonging the duration of the discharge waves. At higher flow rates, the water reservoir causes a delay in the culmination and in terms of discharge balance causes a decreased discharge volume, in particular during the vegetation period.

Suggested Citation

  • Rostislav Fiala & Jana Podhrázská & Jana Konečná & Josef Kučera & Petr Karásek & Pavel Zahradníček & Petr Štěpánek, 2020. "Changes in a river's regime of a watercourse after a small water reservoir construction," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 15(1), pages 55-65.
    • Handle: RePEc:caa:jnlswr:v:15:y:2020:i:1:id:23-2019-swr
    DOI: 10.17221/23/2019-SWR
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    References listed on IDEAS

    as
    1. Pavel Kovář & Michaela Hrabalíková & Martin Neruda & Roman Neruda & Jan Šrejber & Andrea Jelínková & Hana Bačinová, 2015. "Choosing an appropriate hydrological model for rainfall-runoff extremes in small catchments," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 10(3), pages 137-146.
    2. Jaroslava JANKŮ & Dagmar KUČEROVÁ & Jakub HOUŠKA & Josef KOZÁK & Adéla RUBEŠOVÁ, 2014. "The evaluation of degraded land by application of the contingent method," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 9(4), pages 214-223.
    3. Miroslav DUMBROVSKÝ & Veronika SOBOTKOVÁ & Bořivoj ŠARAPATKA & Radka VÁCHALOVÁ & Renata PAVELKOVÁ CHMELOVÁ & Jan VÁCHAL, 2015. "Long-term improvement in surface water quality after land consolidation in a drinking water reservoir catchment," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 10(1), pages 49-55.
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