Flow routing with unknown rating curves using a state-space reservoir-cascade-type formulation

J. Szilagyi, Gabor Balint, Balazs Gauzer, Peter Bartha

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A discrete version of the Kalinin-Milyukov-Nash-cascade is formulated for operational forecasting of stream stages when no information of rating curves is available. Model performance is slightly reduced in comparison to flow routing results using accurate, single-valued stage-discharge relationships. However, when only inaccurate rating curves are available, the present approach may yield superior forecasts. Since in practice the accuracy of the employed rating curves, used to convert stage measurements into discharge values for flow routing, may be somewhat uncertain, application of the present technique is recommended for rating-curve falsification. The method allows for stage predictions using physically based flow routing in rivers where flow rates are unknown or the available rating curves are inaccurate. The technique can also be used without modification for streams with tributaries.

Original languageEnglish
Pages (from-to)219-229
Number of pages11
JournalJournal of Hydrology
Volume311
Issue number1-4
DOIs
Publication statusPublished - Sep 15 2005

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rating curve
routing
stage-discharge relationship
river flow
methodology
tributary
rivers
prediction

Keywords

  • Cascade model
  • Flow routing
  • Forecasting
  • Hydrologic model
  • Rating curve
  • State-space
  • Stream-flow

ASJC Scopus subject areas

  • Soil Science
  • Earth-Surface Processes

Cite this

Flow routing with unknown rating curves using a state-space reservoir-cascade-type formulation. / Szilagyi, J.; Balint, Gabor; Gauzer, Balazs; Bartha, Peter.

In: Journal of Hydrology, Vol. 311, No. 1-4, 15.09.2005, p. 219-229.

Research output: Contribution to journalArticle

Szilagyi, J. ; Balint, Gabor ; Gauzer, Balazs ; Bartha, Peter. / Flow routing with unknown rating curves using a state-space reservoir-cascade-type formulation. In: Journal of Hydrology. 2005 ; Vol. 311, No. 1-4. pp. 219-229.
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