The rainfall-runoff models are one of the most frequently searched topics in hydrology. The many methods to simulate the flow leaving the basin by using precipitation to fall in catchment were developed by different researchers. The average rainfall amount and catchment characteristics are taken into account when developing the model. In this study, the rainfall data of Telcirdag and Corlu Gauging stations were used to estimate the runoff of the Kinikli Basin. Firstly, the probability distribution functions of the rainfall data for Tekirdag and corlu Gauging Stations in Kinikli Basin have been examined. The rainfall data for two stations were found to fit to the gamma probability distribution. The total annual rainfall levels for the different recurrence intervals were calculated by using Pearson Type III table. The rainfall values which was calculated for the different recurrence intervals were converted to runoff using Watershed Modeling System (WMS) software by using hydrological data of Kinikli Basin. The WMS is a program that performs modeling based on the Curve Number (CN) method. Thus, in the presence of the missing data, it has been seen that the new data could be produced and the new hydrological studies can be made.