Rainfall-Runoff (R-R) modelling is a challenging and operational task for hydrological scientists. For the past few years, the scientific community has been suggesting soft computing techniques to solve this problem. In this study, various types of soft computing such as Back Propagation Neural Network (BPN), Radial Basis Function (RBF), Support Vector Machine (SVM), Fuzzy Logic (FL) and Genetic Algorithm (GA) were analyzed systematically. BPN and RBF were found to be more suitable to address R-R modeling, but BPN proved to be more appropriate than RBF. During the test performance, it was observed that the average deviation of R-R from the actual was 23 (% of LPA) while RBF produced 43.6 (% of LPA). All these facts have been described in this paper.