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Forest watershed runoff changes determined using the unit hydrograph method

Author

Listed:
  • V. Černohous

    (Forestry and Game Management Research Institute, Strnady, Opočno Research Station, Opočno, Czech Republic)

  • P. Kovář

    (Faculty of Environmental Sciences, Czech University of Life Sciences in Prague, Prague, Czech Republic)

Abstract

Unit hydrograph is a basic method to show changes in runoff in the watershed. The investigation of runoff changes was carried out in the U Dvou louček watershed situated at the summit part of the Orlické hory Mts., East Bohemia. The waveform ordinates of recession limbs of unit hydrographs obtained using a common approach had to be approximated by the least-squares method. Final hydrographs reflected both drainage treatment and forest stand growth influencing the runoff from the watershed. Both factors increase culmination in synergy and reduce runoff on the recession limb of the hydrograph. We confirmed increased maximum runoff taking up 25-30% of the total runoff time when waterlogged sites were drained. The culmination increased by 0.2-0.8 mm/hour indicates the runoff increased by 2-8 m3/ha/hr.

Suggested Citation

  • V. Černohous & P. Kovář, 2009. "Forest watershed runoff changes determined using the unit hydrograph method," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 55(2), pages 89-95.
    • Handle: RePEc:caa:jnljfs:v:55:y:2009:i:2:id:94-2008-jfs
    DOI: 10.17221/94/2008-JFS
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    Citations

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    Cited by:

    1. V. Černohous & F. Šach & D. Kacálek, 2010. "Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 56(7), pages 307-313.
    2. Darya FEDOROVA & Pavel KOVÁŘ & Jan GREGAR & Andrea JELÍNKOVÁ & Jana NOVOTNÁ, 2018. "The use of Snyder synthetic hydrograph for simulation of overland flow in small ungauged and gauged catchments," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 13(4), pages 185-192.
    3. Vladimír Černohous & Vladimír Švihla & František Šach & Dušan Kacálek, 2014. "Influence of drainage system maintenance on storm runoff from a reforested, waterlogged mountain catchment," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 9(2), pages 90-96.

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