Consideration regarding the mean runoff of the main rivers from the South Dobrogea. This paper investigates the specific features of the runoff of the main rivers from the South Dobrogea. The evidence of these is based on the processing of monthly and yearly discharges, for the next stream gauging stations: Cuza Vodă, Albeşti, Biruinţa. The used methodology includes statistical analysis (employed to determine frequencies and exceeding probabilities), correlations, investigation and observation made in the area. In the South Dobrogea the mean multiannual discharge ranged between 0,08 m³/s and 0,27 m³/s, the mean multiannual specific liquid discharge ranged between 0,50 l/s.km² and 2,56 l/s.km², the mean multiannual volume of water ranged between 697.525 m³ and 8.491.284 m³, the mean multiannual water layer ranged between 15.67 mm and 80,87 mm. In the studied area the largest discharges were in the months: June, July and September. The lowest discharges were in February, December, July and November. The richest discharges were in the summer and the lowest discharges in the winter.