A drain cover assembly includes a face plate having at least one hole to allow water to flow from a drainage pipe located in a retaining wall. The face plate includes a first pair of flanges and a second pair of flanges, both of which extend substantially perpendicular to the face plate. The first pair of flanges has a receiving means for receiving a fastener adapted to secure the drain cover assembly to the retaining wall. The second pair of flanges has a plurality of deformable tabs adapted to create an interference fit with the retaining wall. The drain cover assembly may also include a decorative face plate.