Stormwater Management at the Port of Portland
When rain falls on streets, parking lots, rooftops and other paved surfaces it flows as runoff, also known as stormwater. Runoff from these surfaces can carry pollutants like oil, debris, pesticides, metals, and bacteria into nearby waterways. Even small amounts of pollutants can add up to have a large impact on water quality.
The Port of Portland’s Stormwater Management Program is designed to prevent, reduce, and eliminate the discharge of polluted stormwater to the Columbia Slough and Willamette and Columbia rivers. Port tenants play a critical role in helping protect local water quality. The Port has developed the following technical resources to help tenants identify potential sources of pollutants and improve stormwater management at their facilities.
The Port operates under several different stormwater permits that allow discharges into local waterways provided the Port follows best management practices and meets benchmarks specified by regulatory agencies. The Port is a co-permittee with the City of Portland on a Municipal Separate Storm Sewer System (MS4) permit issued by the Oregon Department of Environmental Quality (DEQ). In accordance with the permit, the Port has a comprehensive stormwater management plan that emphasizes responsible management activities tailored to different operating areas.
Stormwater Management Plan
Below is list of Port-held stormwater permits and the associated Stormwater Pollution Control Plans and Spill Response Plans for each permitted facility.
Stormwater Management Facilities: Operation and Maintenance and Inspections
Stormwater Permits Overview
Biological Oxygen Demand
Fats, Oil and Grease (FOG)
Metals (Lead, Copper, Zinc, Iron, Aluminum)
Polycyclic Aromatic Hydrocarbons (PAHs)
Pesticides, Herbicides, Fungicides and Fertilizers
Total Suspended Solids
Portland International Airport
For additional questions related to stormwater management at Port of Portland facilities, contact Susan Aha at 503.415.6326 or Danelle Peterson at 503.415.6722.