Abstract: An improved leaf disc filter segment having a central drainage plate and a hub defining a central cavity. The drainage plate has radial beams and diametrical rings. The diametrical rings extend generally one-half of the height of the radial beams and are configured to alternately extend from either an upper surface or a lower surface of the radial beams such that the diametrical rings are alternately positioned in either an upper portion or lower portion of the drainage plate. The radial beams and diametrical rings define radial flow paths through the drainage plate to the central cavity through openings in the hub. The radial beams and diametrical rings are configured to provide trapezoidal openings of generally constant area to the flow channels of the drainage plate.