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

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

What We Track

We track the maintenance of:

• About 94 devices owned and operated by the City of Raleigh
• 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.

SCM Maintenance

Private owners or homeowner associations that are responsible for SCMs should have sufficient funds to pay for maintenance, repair, or replacement. Learn more about saving funds for SCM maintenance and our maintenance refund program.