A debris barrier with a function of controlling a storage amount of dredge sediment, comprising: - a base; - a screen formed of a plurality of horizontal members arranged on the base at positions spaced apart from each other in a vertical direction at regular intervals; - a plurality of vertical members coupled perpendicular to the horizontal members to support the screen; - a plurality of support units supporting the screen to be inclined at a predetermined angle, in which the vertical members are coupled to the base by a first rotating unit that rotates the vertical member depending on a load of the dredge sediment piled on the screen, and in which each of the vertical member is coupled to the corresponding support unit by a second rotating unit, characterized in that, each of the support units comprises a piston coupled to the corresponding vertical member, and a cylinder along which the piston moves; and a plurality of strain gauges provided on the each piston, the strain gauges measuring a load of the dredge sediment piled on the screen and generating a load data signal, wherein each of the vertical member is coupled to the corresponding piston by the second rotating unit that enables the piston to move along the corresponding cylinder depending on rotation of the vertical member, wherein, if the total load of dredge sediment piled on the screen is over a first limit, the screen rotates until an angle of the screen becomes a first angle (β); and wherein, if a variation in the total load of dredge sediment piled on the screen for a predetermined time is over a second limit, the screen rotates until the angle of the screen becomes a second angle (α). - a base; - a screen formed of a plurality of horizontal members arranged on the base at positions spaced apart from each other in a vertical direction at regular intervals; - a plurality of vertical members coupled perpendicular to the horizontal members to support the screen; - a plurality of support units supporting the screen to be inclined at a predetermined angle, in which the vertical members are coupled to the base by a first rotating unit that rotates the vertical member depending on a load of the dredge sediment piled on the screen, and in which each of the vertical member is coupled to the corresponding support unit by a second rotating unit, characterized in that, each of the support units comprises a piston coupled to the corresponding vertical member, and a cylinder along which the piston moves; and a plurality of strain gauges provided on the each piston, the strain gauges measuring a load of the dredge sediment piled on the screen and generating a load data signal, wherein each of the vertical member is coupled to the corresponding piston by the second rotating unit that enables the piston to move along the corresponding cylinder depending on rotation of the vertical member, wherein, if the total load of dredge sediment piled on the screen is over a first limit, the screen rotates until an angle of the screen becomes a first angle (β); and wherein, if a variation in the total load of dredge sediment piled on the screen for a predetermined time is over a second limit, the screen rotates until the angle of the screen becomes a second angle (α).