Abstract: A water collecting boundary block includes a body having an opened upper portion and a space portion formed therein, a grating which is seated on the body, and through which a plurality of rainwater inlets are formed, and a drain part formed at one side of a lower end of the body so as to be connected to the space portion, to provide water stored in the space portion to a ground.

Abstract: A device installed at a ditch on a road for preventing a backflow of sewage and a malodor is provided. The device includes a frame portion comprising a plurality of frames arranged in parallel with each other, a valve portion being opened or closed in a manner of a lever according to the weight of a flow of the sewage, and a cover portion for covering the frame portion and the valve portion. The cover portion includes flat drain holes formed in plural lines which are arranged in parallel with each other; flow velocity resistance embossings protruding upwardly with a predetermined height in a bar shape; inclined drain holes formed at both ends of the lengthwise direction and inclined upwardly; and a plurality of sliding prevention embossings protruding upwardly from an upper surface of the cover portion, for preventing walkers from sliding thereon.