Stormwater Devices

How They Work

Stormwater Control Measures (SCMs) are devices used to control and clean stormwater runoff that flows onto a property when it rains. These devices remove pollution from rainwater and help reduce flooding and erosion to downstream properties.

Types of Devices

• Level Spreader
• Rain Garden/Bioretention
• Underground Detention/Pipe
• Swale
• Constructed Wetland/Water Garden
• Wet Pond
• Permeable Pavement
• Dry Pond
• Sand Filter
• Protected, Undisturbed Land (Open Space) 

What We Track

We track the maintenance of:

• About 94 devices owned and operated by the City of Raleigh; and,
• More than 2,200 devices on private property to make sure they are working correctly. 

We keep up-to-date maps and inventory of stormwater devices, pipes, and drains. Staff also determines when the City or resident needs to update the stormwater system. 

Learn more about annual inspections for your device.