In this study we aim to highlight the risk of excess rainfall over the Republic of Moldova territory, analyzing the magnitude and frequency of maximum diurnal, seasonal and annual rainfall. The research is based on data from three meteorological stations (Briceni, Chisinau and Cahul) for the period 1950-2015. The maximum rainfall analysis from the three stations in the republic indicates a decrease of maximum annual averages from north toward south. Regarding the frequency of rainfall excess that reach and exceed the threshold of 50 mm - stands south of the country, being influenced by Mediterranean Cyclones. In annual aspect, for all analyzed stations, the highest frequency rank the classes reaching values of 500-600 mm, each station having its peculiarities.