Abstract: The flood protection wall's shape stabilized segment affords an increased level of protection and is made up of a water fillable bag whose shape, when full, is defined by the plane of the base and the dome-shaped casing with a convex surface that is attached to the base by two plane faces. It is characterized by the fact that the complex convex casing surface (1) consists of three basic convex areas—front foot area (2), central blocking area (3) and rear foot area (4). In the casing's design, the front foot area (2) and rear foot area (4) are connected by straight lines to the central blocking area (3).