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Article

Urban Pluvial Flood Modeling by Coupling Raster-Based Two-Dimensional Hydrodynamic Model and SWMM

by 1,2, 1,2 and 1,2,*
1
Key Laboratory of VGE of Ministry of Education, Nanjing 210023, China
2
School of Geography, Nanjing Normal University, Nanjing 210023, China
*
Author to whom correspondence should be addressed.
Academic Editor: Wei Sun
Water 2022, 14(11), 1760; https://doi.org/10.3390/w14111760
Received: 21 April 2022 / Revised: 26 May 2022 / Accepted: 28 May 2022 / Published: 30 May 2022
(This article belongs to the Special Issue A Safer Future—Prediction of Water-Related Disasters)
Urban flood modeling usually involves simulating drainage network runoff and overland flow. We describe a method for urban pluvial flood modeling by coupling the stormwater management model (SWMM) with a raster-based 2D hydrodynamic model, which is based on a simplified form of the shallow water equations. Then, the method is applied to a highly urbanized area in Nanjing City, China. The elevation of the raster-based 2D hydrodynamic model shows that the raster-based model has comparable capabilities to LISFLOOD-FP for surface flood modeling. The calibration and validation results of the coupled model show that the method is reliable. Moreover, simulation results under the six rainfall return periods, which include 1-, 5-, 10-, 20-, 50-, and 100-year return periods show that node overflow, water depth, and flooding area increase proportionately as the intensity of rainfall increases. Therefore, the coupling model provides a simplified and intuitive method for urban pluvial flood modeling, which can be used to detect flood-sensitive areas and elevate the capacity of urban drainage networks for urban pluvial flooding. View Full-Text
Keywords: urban pluvial flood; 2D hydrodynamic model; coupled model; storm water management model urban pluvial flood; 2D hydrodynamic model; coupled model; storm water management model
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MDPI and ACS Style

Yang, Q.; Ma, Z.; Zhang, S. Urban Pluvial Flood Modeling by Coupling Raster-Based Two-Dimensional Hydrodynamic Model and SWMM. Water 2022, 14, 1760. https://doi.org/10.3390/w14111760

AMA Style

Yang Q, Ma Z, Zhang S. Urban Pluvial Flood Modeling by Coupling Raster-Based Two-Dimensional Hydrodynamic Model and SWMM. Water. 2022; 14(11):1760. https://doi.org/10.3390/w14111760

Chicago/Turabian Style

Yang, Quntao, Zheng Ma, and Shuliang Zhang. 2022. "Urban Pluvial Flood Modeling by Coupling Raster-Based Two-Dimensional Hydrodynamic Model and SWMM" Water 14, no. 11: 1760. https://doi.org/10.3390/w14111760

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