Flood Inundation Modeling: A Brief Review

Numerous mathematical models were developed for flood hazard mapping, flood inundation modeling and flood risk assessment. This study aims to have a comprehensive literature review of various mathematical models available in literature for flood modeling. For this study a total of 42 research articles are reviewed from year 1995 to 2020. The assessment is carried out on the basis of the model’s dimensionality i.e.; one dimensional (1-D), two-dimensional (2-D), coupled 1-D/2-D or three-dimensional (3-D), and numerical solutions available in literature i.e.; Finite element, Finite difference, Finite volume or some others methods for the models. The study reviewed the literature for flood modeling and prepared a table of various models used for flood modeling. It was concluded that coupled models are more preferable than other models because they had the strength of both 1-D and 2-D models and computationally efficient with less computational time. For open channel modeling models based on finite difference method are preferred over numerical solution techniques.