Evaluation of flood management with Multi-Hydro: application at Heywood, UK.

Abstract : Due to ongoing growth of population and increasing exposure to climatic changes, urban storm water and wastewater management has become a major concern nowadays. To help engineers and managers in making everyday decisions there is a variety of modelling and planning tools that also remain very fragmented and still require a deeper understanding of the multi-scale dynamics and complex interactions of urban water cycle processes (watershed hydrology, urban ground water infrastructure and additional flood resilient elements (FRe)). With this prospective, Multi-Hydro, a fully distributed model, is currently developed at Ecole des Ponts ParisTech.. It interactively couples several components that simulate the various hydrologic and hydraulic processes involved in a peri-urban watershed. Each component relies on existing and widely validated models available in public domain software packages. The processes modelled are rainfall, runoff, infiltration in heterogeneous soils, and drainage into sewer systems. In the context of the SMARTeST project, Multi-Hydro was applied on an areas located in the Rochdale district of Heywood, in the great Manchester area (UK). The Egerton Street and Wilton grove neighbourhood knew important flood event during the last decade. With the use of the NIMROD radar data, four scenarios are tested to evaluate the impact of the implementation of flood resilience strategies in the aim to reduce the vulnerability of these places. The results obtained with Multi-Hydro provide a good idea of the impact of these protection strategies by assessing two of them as almost equivalent on the hydrological aspect and efficient to reduce the water level in the street during the flood event. It also showed the need for high resolution modelling that requires high resolution inputs especially rainfall.
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https://hal-enpc.archives-ouvertes.fr/hal-02059218
Contributeur : Auguste Gires <>
Soumis le : mercredi 6 mars 2019 - 14:24:36
Dernière modification le : vendredi 29 mars 2019 - 03:02:21

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  • HAL Id : hal-02059218, version 1

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Agathe Giangola-Murzyn, Julien Richard, Auguste Gires, Karl Hennermann, Ioulia Tchiguirinskaia, et al.. Evaluation of flood management with Multi-Hydro: application at Heywood, UK.. International Symposium – Weather Radar and Hydrology, April 2014, Apr 2014, Washington DC, United States. ⟨hal-02059218⟩

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