Some aspects regarding the flood waves analysis at Satu Mare hydrometric station on the Some River. The analysis of the flood waves has been done using the data recorded for a period of 25 years, between 1979 and 2004. Thus, in each year, two of the largest floods have been evaluated, in order to obtain several characteristics such as the maximum discharge values, the increasing and decreasing time and also the frequency of occurrence during different seasons. A particular analysis has been made in respect with the defense levels at the hydrometric station and the maximum discharge values. The study also analyses the volumes of water translated through the river bed during those major flooding events.