Catch Basin A catch basin collects runoff and directs it into underground storm drainage pipes. It typically has a grate on top to trap debris and prevent it from entering the pipes.
Curb Inlet A curb inlet is an opening built into a street curb that collects runoff and directs it into underground storm drainage pipes.
Concrete Pipe (Reinforced) A reinforced concrete storm drainage pipe is a strong pipe made with concrete and steel.
Corrugated Metal Pipe (CMP) A corrugated metal pipe is typically made from galvanized steel or aluminum. The pipe surface has repeating ridges and grooves.
Double Catch Basin A double catch basin collects runoff and directs it into underground storm drainage pipes. It has two connected basins with separate grates on top and is used in areas with greater drainage needs.
Drop Inlet A drop inlet is a type of catch basin that collects runoff and directs it into underground storm drainage pipes. It is used to drain rainwater that collects in flat or low spots.
Elongated Throat An elongated throat catch basin is a long opening built into a street curb. It collects runoff and directs it into underground storm drainage pipes, and is used along wider road sections with greater drainage needs.
Headwall with Wing Walls A headwall with wing walls is a structure built at the end of a storm drainage pipe or culvert to help direct water flow and stabilize the surrounding soil.
Headwall A headwall is a structure built at the end of a storm drainage pipe or culvert to help anchor it in place and stabilize the surrounding soil.
Manhole A manhole, also known as a maintenance hole, is an access point to underground storm drainage pipes. Workers use it to inspect, clean and maintain the storm drainage system.
Riprap Riprap is a layer of rock placed along stream banks or storm drainage outfall to protect soil from being washed away.
Slab-top Inlet A slab-top inlet is a flat-topped storm drain with side openings that collects runoff in low areas and directs it into underground storm drainage pipes.