Journal
ENVIRONMENTAL MODELLING & SOFTWARE
Volume 77, Issue -, Pages 19-31Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envsoft.2015.11.010
Keywords
Tidal rivers; Conceptual models; Reservoir routing; Computationally efficient modelling
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Funding
- Flanders Hydraulics Research [WL2014R00_131_1]
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Conceptual reservoir-type models of river systems, that mimic the results of detailed hydrodynamic models, provide a powerful tool for numerous river management applications. Thanks to their computationally efficient model structure they are very well suited for applications that require long term simulations or a large number of model iterations. However, one well-known problem is that conceptual models have difficulties to account for backwater effects. For this reason, their application to tidally influenced river reaches so far was almost non-existent. This paper introduces an extension of an existing grey-box reservoir modelling technique to incorporate tidally influenced river reaches. The methodology is demonstrated for the downstream part of the rivers Zenne and Rupel in Belgium. Results show a minor loss of accuracy when the detailed model is replaced by the surrogate conceptual model. Also, the tidal effects are well represented. (C) 2015 Elsevier Ltd. All rights reserved.
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