Red River Delta (RRD) is the second biggest delta in Viet Nam with the total area of around 15,500 sq.km and a population of nearly 20 million people. The delta is protected by approximately 3000 km of levees which are classified into four grades from III, II, I to special indicating the different safety levels. In this paper, the author first establish the hydraulic boundary conditions and classify the geotechnical conditions of Red River levee in the area of Ha Noi, then carries out the classification of dike base on ground condition and observation data. Finally, reliability indexes for each dike class indicated by three categories of levee such as A, B, and C, depending on its actual probability of failure. The finding is expected to be a good reference for flood defence management in the RRD.