Int Jo Recent Technol Eng: IJRTE 7(6C2):317–322Īksoy H, Sadan V, Kirca O, Burgan I, Kellecioglu D (2016) Hydrological and hydraulic models for determination of flood-prone and flood inundation areas. Īhamed SMF, Agarwal S (2019) Urban flood modeling and management using SWMM for New R. Īdeogun AG, Pathirana A, Daramola MO (2012) 1D–2D hydrodynamic model coupling for inundation analysis of sewer overflow. Ībdulkareem JH, Pradhan B, Sulaiman WNA, Jamil NR (2018) Review of studies on hydrological modelling in Malaysia. This paper would help urban flood managers, and potential users undertake effective flood modeling tasks, balancing between their needs, model complexity and requirements of both input data and time.Ībderrezzak KEK, Paquier A, Mignot E (2009) Modelling flash flood propagation in urban areas using a two-dimensional numerical model.
Each of these techniques is described, by taking aspects influencing the selection of a proper flood modeling method for a particular application into account. The existing methods are categorized into: rapid flood spreading, one-dimensional sewer, overland flow (1D and 2D), sewer-surface coupling approaches (1D–1D and 1D–2D). This paper gives an overview of prevailing flood modeling approaches in view of their potentials and limitations for modeling pluvial flood in urban settings.
With respect to effective flood modeling, particularly in urbanized floodplains, the choice of an appropriate method, considering contextual requirements, is challenging. Likewise, several hydrodynamic models have been developed and their application has been spread. Regarding flood risk management, flood modeling enables to understand, assess and forecast flood conditions and their impact. Grid resolution, the way in which hydraulic structures are mimicked, the model code, and the default value of the parameters are considered the main sources of prediction uncertainty.Pluvial flood has been increasingly understood as a major threat that has presented a significant risk for many cities worldwide. The analysis revealed that, for a given case, Iber 2D has the best performance in simulating the water level and inundation for flood events with 20- and 50-year return periods, respectively, followed by Flood Modeller 2D, HEC-RAS 2D, and PCSWMM 2D in terms of their performance. The model's performance was evaluated based on the water surface elevation and flood extent, in terms of the mean absolute difference and measure of fit. The study area covers a 5-km reach of the Santa Bárbara River located in the Ecuadorian Andes, at 2330 masl, in Gualaceo. This paper presents a comparative analysis of the performance of four two-dimensional hydraulic models (HEC-RAS 2D, Iber 2D, Flood Modeller 2D, and PCSWMM 2D) with respect to the generation of flood inundation maps. Hydraulic models for the generation of flood inundation maps are not commonly applied in mountain river basins because of the difficulty in modeling the hydraulic behavior and the complex topography.