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Evaluating the impact and risk of pluvial flash flood on intra-urban road net- work: A case study in the city center of Shanghai, China

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journal contribution
posted on 19.04.2016, 10:30 by Jie Yin, Dapeng YuDapeng Yu, Zhane Yin, Min Liu, Qin He
Urban pluvial flood are attracting growing public concern due to rising intense precipitation and increasing consequences. Accurate risk assessment is critical to an efficient urban pluvial flood management, particularly in transportation sector. This paper describes an integrated methodology, which initially makes use of high resolution 2D inundation modeling and flood depth-dependent measure to evaluate the potential impact and risk of pluvial flash flood on road network in the city center of Shanghai, China. Intensity–Duration–Frequency relationships of Shanghai rainstorm and Chicago Design Storm are combined to generate ensemble rainfall scenarios. A hydrodynamic model (FloodMap-HydroInundation2D) is used to simulate overland flow and flood inundation for each scenario. Furthermore, road impact and risk assessment are respectively conducted by a new proposed algorithm and proxy. Results suggest that the flood response is a function of spatio-temporal distribution of precipitation and local characteristics (i.e. drainage and topography), and pluvial flash flood is found to lead to proportionate but nonlinear impact on intra-urban road inundation risk. The approach tested here would provide more detailed flood information for smart management of urban street network and may be applied to other big cities where road flood risk is evolving in the context of climate change and urbanization.

Funding

This work was supported by the Open Research Fund of State Key Laboratory of Estuarine and Coastal Research (Grant No: SKLEC-KF201407), the National Natural Science Foundation in China (Grant No: 41201550, 41371493, 71373084), Project of Joint Center for Shanghai Meteorological Science and Technology (Grant No: 2015-03), Innovation Program of Shanghai Municipal Education Commission (Grant No: 13YZ061, 13ZZ035).

History

School

  • Social Sciences

Department

  • Geography and Environment

Published in

Journal of Hydrology

Volume

537

Pages

138–145

Citation

YIN, J. ...et al., 2016. Evaluating the impact and risk of pluvial flash flood on intra-urban road net- work: A case study in the city center of Shanghai, China. Journal of Hydrology, 537, pp. 138–145.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

19/03/2016

Publication date

2016-03-26

Copyright date

2016

Notes

This paper was accepted for publication in the journal Journal of Hydrology and the definitive published version is available at http://dx.doi.org/10.1016/j.jhydrol.2016.03.037.

ISSN

0022-1694

Language

en