Drainage Maintenance

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To report a drainage, maintenance, or flooding issue, call 910.341.4646

In Wilmington, stormwater runoff is channeled through a complex system of storm drains, pipes, ditches, ponds, culverts, creeks and wetlands which flow straight into our waterways. Stormwater Services field crews perform maintenance of the storm drainage system within the public right-of-way or in accepted easements.

Stormwater Services maintains the stormwater drainage system including:

  • 18,508 catch basins and manholes
  • 312 miles of pipe/culverts 
  • 218 miles of open drainage (ditches, channels)
  • 46 acres of retention ponds (Randall Pond, Silver Stream Pond, etc)
  • 131 acres of stormwater Best Management Practices (Kerr Avenue Wetland, Park Avenue Bioretention, Wade Wetland, Dock Street Rain Gardens, etc)

For fiscal year 18/19:

  • 315 loads of street sweeping debris collected
  • 7,949 miles of streets swept
  • 362 bi-annual inspections of private retention ponds
  • 33 miles of ditches cleaned manually

Maintenance Field Crews

Street Sweeping Crew

Sweep curbed City streets and North Carolina DOT streets, public parking lots, and when required, non-curbed streets. Private streets are the responsibility of the Homeowner's Association or Developer. This crew also inspects and removes blockages from the stormwater drainage system.


BMP Maintenance Crew

Maintain 70+ stormwater BMPs (Best Management Practices) including constructed wetlands, bioretention areas, retention ponds, and stabilizing stream banks.  



Open Drainage Crew

Perform routine mowing, ditch cleaning and erosion control activities of drainage ditches, creeks, lakes and ponds, as well as sediment removal and control of nuisance aquatic weed growth. 


Closed Drainage Crew

Perform inspection, maintenance, repair and construction of underground pipes, manholes, catch basins, junction boxes and headwalls, as well as deep excavations requiring the use of trench boxes. Crews inspect stormwater pipes using cameras and perform internal pipe repairs using confined space entry protocols.



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