Abstract
Model-supported real-time flood control requires the development of effective and efficient hydraulic models. As large numbers of iterations are to be executed in optimization procedures, the hydraulic model needs to be computationally efficient. At the same time, it is also required to generate high-accuracy results. Therefore, an identification and calibration procedure was developed for the purpose of having this conceptual model built up and calibrated based on a limited number of simulations with a more detailed full hydrodynamic model. The performance of the conceptual model was evaluated for historical events under different regulation conditions. Robustness test results show close agreement, with Nash-Sutcliffe Efficiency values higher than 0.90. In addition, it is found that the conceptual model is capable of accomplishing simulation of historical flood events within few seconds. That is much faster than the detailed full hydrodynamic model, which enables the conceptual model to be applied for real-time flood control.
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Acknowledgments
The full hydrodynamic InfoWorks-RS model of the Demer basin and the validated hydrometric data were provided by the Division Operational Water Management of the Flemish Environment Agency (VMM). We also acknowledge Innovyze for the InfoWorks-RS software and license.
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Chiang, PK., Willems, P. Model Conceptualization Procedure for River (Flood) Hydraulic Computations: Case Study of the Demer River, Belgium. Water Resour Manage 27, 4277–4289 (2013). https://doi.org/10.1007/s11269-013-0407-z
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DOI: https://doi.org/10.1007/s11269-013-0407-z