The present invention relates to a flood irrigation apparatus. The apparatus comprises a headgate in communication with a body of water. The body of water can be a pond or a reservoir, for example. The apparatus further comprises a conduit securely connected to the headgate and in fluid communication with the headgate, wherein the flow of water within the conduit is regulated by the operation of the headgate. The apparatus further comprises an exit chamber securely connected to the conduit and in fluid communication with the conduit. The exit chamber comprises a plurality of vertical bricks disposed on the floor of the exit chamber. The vertical bricks facilitate the trapping of the silt and debris on the floor of the exit chamber in order to provide substantially silt-free water for irrigation.