Floods as the most destructive natural disaster are highly complex to model. The research on the advancement of flood risk assessment models contributed to risk reduction, policy suggestion, reduction of the property damage and minimization of the loss of human life. During the past two decades, machine learning methods contributed highly in the advancement of modeling systems, providing better performance and cost-effective solutions. Researchers through introducing novel ML methods and hybridizing of them aim at discovering more accurate and efficient models. The main contribution of this literature review is to demonstrate the state of ML models from two perspectives; 1-flood risk assessment, 2- producing flood reliable map to give insight into the most suitable models. In this literature is shown the important ML models that can have impressive effect on flood models are Super Vector Mane, Decision Tree, Logistic Regression and Random Forest respectively. Hybridization different kind of ML methods, data fusion that is a prevalent way to deal with imperfect raw data for capturing reliable, ensemble algorithm and model optimization are reported as the most effective strategies for the improvement of ML methods. Random Forest models do well with high dimensional data and their flexibility makes them suitable for solving more problems. ANN models are especially good at modeling multifarious nonlinear networks that are difficult to describe with functions directly. This study provides a concise and comprehensive reference for researchers پرونده مقاله