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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Volume 10, issue 6 | Copyright
Hydrol. Earth Syst. Sci., 10, 783-788, 2006
https://doi.org/10.5194/hess-10-783-2006
© Author(s) 2006. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  20 Oct 2006

20 Oct 2006

Technical Note: Updating procedure for flood forecasting with conceptual HBV-type models

Th. Wöhling1, F. Lennartz2, and M. Zappa3 Th. Wöhling et al.
  • 1Lincoln Environmental., Ruakura Research Centre, Private Bag 3062, Hamilton, New Zealand
  • 2Dresden University of Technology, Würzburger Str. 46, D-01187 Dresden, Germany
  • 3Swiss Federal Institute for Forest, Snow and Landscape Research, Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland

Abstract. Flood forecasting is of increasing importance as it comes to an increasing variability in global and local climates. But rainfall-runoff models are far from being perfect. In order to achieve a better prediction for emerging flood events, the model outputs have to be continuously updated. This contribution introduces a rather simple, yet effective updating procedure for the conceptual semi-distributed rainfall-runoff model PREVAH, whose runoff generation module relies on similar algorithms as the HBV-Model. The current conditions of the system, i.e. the contents of the upper soil reservoirs, are updated by the proposed method. The testing of the updating procedure on data from two mountainous catchments in Switzerland reveals a significant increase in prediction accuracy with regards to peak flow.

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