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Tuesday May 3rd
Stormwater Division


Oregon City provides a safe and reliable stormwater system and implements watershed protection and restoration actions that consistently promote surface water quality and stream health.


The Stormwater Division manages the stormwater collection and treatment systems within the city limits of Oregon City (22 drainage basins, 53 detention ponds). This Division performs the following services to the community:

  • Customer Service and 24-hour Emergency Response – providing outstanding customer service to its customers on all stormwater related issues and 24-hour response to blocked catch basins, storm pipes, localized flooding, and spills into storm drains and streams.
  • Healthy Streams Plan - take the lead in coordinating the implementation of healthy streams including tree planting and stream restoration projects, identifying/recommending culvert replacements and outfall retrofits, all for improved water quality/quantity and fish passage.
  • Storm Line Cleaning – cleaning pipe every year and removing debris and sediment from storm pipes.
  • Video Inspection of Storm Lines – inspecting pipes each year for structural integrity, root intrusion, service line connections, etc.
  • Utility locates – public storm lines are marked with green paint prior to excavation
  • Storm system repairs – broken storm lines are dug up and repaired once they have been identified by video inspection.
  • Stormwater Quality Facility operation and maintenance – mowing, trash pickup, and grate cleaning are performed on detention ponds and swales throughout the City.
  • Small Storm System Improvements and Extensions - storm lines, catch basins, and manholes are installed to improve stormwater drainage.
  • Storm Water Low Impact Development (LID) Guidelines

Stormwater detetion pondSYSTEM DETAILS

  • 2009/10 Operations budget = $1.4 Million
  • DEQ NPDES MS4 Permit
  • 11 natural resource areas
  • Geography/geology - 20+ Basins
  • Historic OC and Hilltop OC
  • 126 miles of pipe
  • 4,400 catch basins
  • 30 miles of streams
  • 75 detention ponds
  • 37 underground detention tanks


  • Stormwater management systems
    • Beavercreek Road
    • Glen Oak Road
    • Washington Street
  • Newell Creek
  • Abernethy Creek
  • Clackamas River
  • Willamette River


  • MS4 Permit administration
  • Low Impact Development standards
  • System maintenance program
  • Flood control program
  • Emergency response
  • Stream inventories program
  • Stormwater quality and flow control





Storm Customers 10,031
Storm Water Pipes 122 miles
Storm Culverts 1 mile
Storm Water Manholes 2,284
Catch Basins 4,430
Storm Ditches 10 miles
Open Streams 26 miles
Detention Tanks 37 (2 miles)
Detention Ponds 74 (12 acres)