Drainage Structures

The Municipality of Anchorage has over 15,000 storm water drainage structures such as manholes, catch basins, and oil and grease separators (OGS).  Street Maintenance crews clean and maintain these structures to meet the requirements of and stay in compliance with the National Pollutant Discharge Elimination System (NPDES).

Crew installing a new storm drainage system as a replacement for a failed pipe.

Vactor crew cleaning out an Oil and Grease Separator (OGS), within the storm drainage system, at Northwood and W.48th Avenue.