ABSTRACT. – Structural Measures Against Flooding in Cluj and Dej Hills. The effects of hydrological phenomena of risk are generally adverse to the environment, generating a lot of damage. Thus the management activity of these phenomena and a planned activity to prevent and combat their negative effects is absolutely necessary. To mitigate the negative effects of hydrological phenomena of risk or reduce the risk, people have completed technical hydrological works to combat the destructive effects of water (flood protection works, to correct torrential formations and reforestation, works for soil erosion control and works to remove excess humidity). The main flood protection technical works existing in Cluj and Dej Hills are the embankments. Regarding these technical works we can mention that not all of them operate at designed parameters.