Stormwater Structure

Inlets, outlets, and junctions designed to control the flow of stormwater runoff. Structure types include combination, curb, drop or slab inlets, headwall and end sections, junction boxes, and manholes. Some structures, such as weir boxes and riser pipes are predominantly associated with stormwater control facilities. Pipe transitions represent locations where a pipe connects directly into another pipe or into a larger open structure, such as an underground storage SCM.