Water pollution which is the daily problem of the whole world has increased in parallel with industrialization, urbanization and population, and it is increasing rapidly. At the same time, intensive and uncontrolled water consumption causes the decline of underground and over ground water resources day by day in Thrace Region. Having information about the quality of the water used in the irrigation is a significant indicator in order to prevent the problems in the soil. In this study, 4 dams in Edirne province were handled and convenience of the dams in terms of irrigation water was determined. According to the results, Süloğlu dam was in T₁A₁ and T₂A₁ irrigation water class. Altınyazı dam, Sultanköy dam and Hamzadere dam were in T₃A₁ irrigation water class. When the quality criteria of the dams were examined according to the intra-continental ground water sources classes, it was determined that Süloğlu dam, Sultanköy dam and Hamzadere dam were in II and III classes and Altınyazı dam was in the II class. According to FAO-29 classification, Süloğlu, Sultanköy and Altınyazı dams were generally in I the class and Hamzadere dam was in the II class in terms of many parameters.