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A Coupled Hydrodynamic and Rainfall-tracking Model for Source-to-impact Analysis in Urban Inundation

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Abstract

Urban inundation is becoming increasingly severe as a result of climate change and rapid urbanization. Various urban water management practices are designed to alleviate urban inundation hazards. It is essential to better understand and model the dynamic process of surface runoff to inform the arrangement of effective strategies for urban stormwater management. A coupled hydrodynamic and rainfall-tracking model is proposed to determine spatial prioritization by identifying distributions of source areas and quantifying the contribution rate for source areas to inundating areas. Specially, the rainfall mark variable (R) is developed to trace out the pathway of runoff generated by rainfall in the proposed modeling. The coupled model is successfully validated against two idealized test cases including dissymmetric V-shaped and V-shaped catchments. Indeed, the Jinhua underpass catchment area reveals its capability in representing detailed hydrodynamic information and obtaining contribution rates of source areas to inundated areas. The approach can help recognize opportunities to determine the spatial prioritization and adaptability for city planners to complete the optimal solution schemes between the available resources and alleviating inundation.

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Data Availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

Abbreviations

BMPs:

Best management practices

LID:

Low impact development

MCDA:

Multiple criteria decision analysis

MOEA:

Multi-objective evolution algorithm

NSE:

Nash–Sutcliffe efficiency coefficient

R:

Rainfall mark variable

RANSE:

Reynolds Averaged Navier–Stokes equation

SWEs:

Shallow water equations

USWM:

Urban stormwater management

WSUD:

Water sensitive urban design

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Funding

This work is partly supported by the National Natural Science Foundation of China (52079106), National Key Research and Development Program of China (2016YFC0402704).

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Contributions

Conceptualization and Methodology: J. Hou, X. Wang; Writing-original draft preparation: X. Wang; Material preparation, collection and analysis: X. Wang, D. Li,; Supervision: B. Li, X. Gao, Y. Liu; Funding acquisition: J. Hou.

Corresponding author

Correspondence to Jingming Hou.

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Competing Interests

We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, there is no professional or other personal interest of any nature or kind in any product, service and company that could be construed as influencing the position presented in, or the review of, the manuscript entitled “A coupled hydrodynamic and rainfall-tracking model for source-to-impact analysis in urban inundation”.

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Wang, X., Hou, J., Li, D. et al. A Coupled Hydrodynamic and Rainfall-tracking Model for Source-to-impact Analysis in Urban Inundation. Water Resour Manage 36, 5581–5598 (2022). https://doi.org/10.1007/s11269-022-03319-6

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  • DOI: https://doi.org/10.1007/s11269-022-03319-6

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