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Water Resources Management

, Volume 33, Issue 2, pp 523–537 | Cite as

Dynamic Regression Model for Hourly River Level Forecasting Under Risk Situations: an Application to the Ebro River

  • A. C. CebriánEmail author
  • J. Abaurrea
  • J. Asín
  • E. Segarra
Article
  • 42 Downloads

Abstract

This work proposes a new statistical modelling approach to forecast the hourly river level at a gauging station, under potential flood risk situations and over a medium-term prediction horizon (around three days). For that aim we introduce a new model, the switching regression model with ARMA errors, which takes into account the serial correlation structure of the hourly level series, and the changing time delay between them. A whole modelling approach is developed, including a two-step estimation, which improves the medium-term prediction performance of the model, and uncertainty measures of the predictions. The proposed model not only provides predictions for longer periods than other statistical models, but also helps to understand the physics of the river, by characterizing the relationship between the river level in a gauging station and its influential factors. This approach is applied to forecast the Ebro River level at Zaragoza (Spain), using as input the series at Tudela. The approach has shown to be useful and the resulting model provides satisfactory hourly predictions, which can be fast and easily updated, together with their confidence intervals. The fitted model outperforms the predictions from other statistical and numerical models, specially in long prediction horizons.

Keywords

River level forecast Dynamic regression models Correlated errors Switching regimes Ebro River 

Notes

Acknowledgements

The authors are members of the research group Modelos Estocásticos, supported by the DGA, the European Social Fund and the project MTM2017-83812-P. The authors acknowledge CHE and especially G. Pérez and J.A. Álvarez for supplying the data and their advice. The authors thank the anonymous referees for their valuable comments.

Compliance with Ethical Standards

Conflict of Interest

None

Supplementary material

11269_2018_2114_MOESM1_ESM.pdf (664 kb)
(PDF 664 KB)

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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.University of ZaragozaZaragozaSpain

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