The seven most recent Runoff Prediction Models(RPM) are selected based on their accuracy, reliability, ease of use, and recentness : Non Homogeneous Markov Chain Runoff Prediction Model(NHMC-RPM) Optimized SWAT-ANN Particle Swarm Optimization(PSO)- Long Short-Term Memory (LSTM) Model Support Vector Machine(SVM) Identification of unit Hydrograph and Component flows from Rainfall, Evapotranspiration, and Streamflow(IHACRES)-Group Method of Data Handling(GMDH) Hybrid Combined Forecasting Model(CFM) : Extreme Learning Machine(ELM) with PSO Auto-Regressive Moving Average(ARMA) Click the link below to view the schematics of each model. https://hydroideas.blogspot.com/2022/04/recenthydrologymodel.html