The City’s stormwater system is not connected to the City’s sewer system. As such, the City conducts a variety of activities focused on the prevention of stormwater pollutants entering the system.
The City is responsible for the design, construction, maintenance, and repair of the public stormwater system. These activities include maintaining stormwater pipes, catch basins (storm drains), water-quality facilities, street sweeping, emergency response, as well as public education and outreach.
To provide comment on any stormwater reports, policies, or permits, please complete this comment form.
It is against the law to allow anything other than rain water to enter the stormwater drainage system.
To help reduce localized flooding and help keep storm drains flowing at peak performance, the City encourages residents to clear leaves and other debris from storm drains near their property. A quick sweep with a broom or rake will easily clear off a catch basin and keep our drainage systems flowing properly. Remember, never remove a storm drain cover or attempt to clean a drain located in a busy street.
Put leaves and other yard debris in your yard waste bins for easy removal and recycling. Do not put leaves onto the street.
The City is implementing a new program which includes inspecting commercial and industrial properties/businesses to help prevent pollutant discharges into our local rivers and streams. A 30-day public comment period closed on October 31. A City Council meeting on the code changes and program was held on November 21, 2023.
The City has developed a new stormwater strategy to prioritize green infrastructure for managing stormwater from all development and redevelopment projects in the city. The strategy was available for public comment from October 15, 2023 through November 15, 2023.
Helpful stormwater information relevant to industrial and commercial properties
Lake Oswego is committed to protecting the environment of the city and the surrounding area through its Stormwater Management Utility. In an effort to further protect our water sources, Erosion Control Permits are required for construction projects. Read on to learn more.
Public Works Maintenance is responsible for the day to day operation of the stormwater utility. These services include catch basin maintenance, street sweeping, stormwater facility maintenance and emergency utility services.
Lake Oswego's Interactive Maps allow the user to navigate the map by zooming in and out, search the map by address, tax lot number, or intersection, turn layers on and off, including aerial photography, click on a property or other features to obtain information, use tools to markup and print a map, use measurement tools, change maps to a selection of pre-set layers, and use quick links to