Abstract: A downspout structure adapted to be utilized with a conventional gutter on a building structure to discharge run-off water to a drainage location, including an elongate generally U-shaped open downspout member having an interior water deflector arrangement along substantially the length thereof forming wettable surfaces adapted for causing run-off water contacting the deflector arrangement to flow sheetingly therealong to retain the run-off water within the downspout member. Leaves and other debris are transported through the downspout member by the sheeting water run-off and the open nature of the downspout member permits expulsion of such debris to substantially prevent clogging of the downspout structure.

Abstract: A cover member adapted to be mounted in a conventional gutter on a building structure in covering relation to the open top to the gutter trough provides a forward upwardly-extending lip portion having a curved outward surface adapted to form a dam to water runoff from the building structure to slow the speed of water runoff flowing over the lip portion to cause the overflowing water to follow the curved outward surface of the lip portion into the gutter while causing leaves and like debris to fall gravitationally over the lip portion outwardly of the gutter. In one embodiment, the lip portion is formed as an integral upwardly and rearwardly curled forward edge to the cover member. In a second embodiment, a coil spring rests between the curled lip portion and the front wall of the gutter to act as a filter against debris entering the gutter.