A Cellular Automata Based Rainfall-Runoff Model for Urban Inundation Analysis Under Different Land Uses

Recently many runoff models based on cellular automaton (CA) have been developed to simulate floods; however, the existing models cannot be readily applied to complex urban environments. This study proposes a novel rainfall-runoff model based on CA (RRCA) to simulate inundation. Its main contributio...

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Bibliographic Details
Published inWater resources management Vol. 35; no. 6; pp. 1991 - 2006
Main Authors Yao, Shuang, Chen, Nengcheng, Du, Wenying, Wang, Chao, Chen, Cuizhen
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.04.2021
Springer Nature B.V
Subjects
Atmospheric Sciences
Cellular automata
Civil Engineering
Drainage
Earth and Environmental Science
Earth Sciences
Environment
Flood control
Flood management
Floods
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Hydrologic models
Hydrology/Water Resources
Interception
Land use
Rain
Rainfall
Rainfall-runoff relationships
Runoff
Simulation
Transition rules
Urban environments
Urban runoff
Water supply
Waterlogging
Accurate flood simulation
Inundation analysis
Cellular automata
Land use
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Summary:Recently many runoff models based on cellular automaton (CA) have been developed to simulate floods; however, the existing models cannot be readily applied to complex urban environments. This study proposes a novel rainfall-runoff model based on CA (RRCA) to simulate inundation. Its main contributions include a fine runoff generation process that considers 12 urban scenarios rather than a single land use type and the confluence process determined by the new transition rules considering water supply and demand (WS-WD transition rules). RRCA was compared with another CA based flood model (E2DCA). With the benchmark model, the results showed that there was good agreement, with an R-squared greater than 0.9, and that RRCA was more sensitive to waterlogging levels than E2DCA. Furthermore, the simulated vegetation interception, infiltration and drainage processes had varying degrees of impact on waterlogging. Corresponding measures can be taken in urban flood management according to the identification of areas experiencing drainage difficulties.
ISSN:0920-4741
1573-1650
DOI:10.1007/s11269-021-02826-2