You can help protect watershed health! Volunteer to plant trees, sign up for our newsletter, host a presentation, or attend a free workshop.

Join us for spring invasive species removal and installation of native plants! We will be implementing COVID-19 safety guidelines and working with small groups of volunteers. Please email Jack at to be added to our volunteer mailing list! You will be notified of new volunteer opportunities when they are scheduled.


Oswego Lake Watershed Council’s number one priority is the health of our community and volunteers. We appreciate all of you and want you to know that our staff is closely monitoring the spread of COVID-19 and taking appropriate measures to ensure that we are doing our part to promote wellness in the community. OLWC is following the recommendations of local government, the WHO, CDC and OHA. OLWC has resumed in person volunteer events, with mask requirements, limited group sizes, and additional safety precautions.

We will also continue to engage with the OLWC community online by using email and our social media platforms. As always, if you have any questions or concerns, please do not hesitate to reach out to us. We appreciate your patience and hope that all of you continue to stay healthy during this challenging time.

Take care,

OLWC Staff and Board

September 9, 2022
September 17, 2022
  • OLWC Work Party: Westlake HOA September 17, 2022  10:00 am - 12:00 pm 14903 Westlake Dr, Lake Oswego, OR 97035

    This beautiful oak woodland habitat is home to 150-year-old white oaks and a diversity of wildlife! Invasive species, especially ivy, have taken over the forest and we need your help! We will be pulling invasive ivy and planting native shrubs. Pulling ivy and planting requires volunteers to be able to bend over or kneel, but we can arrange alternate projects for those with different abilities or mobility issues. Face masks are recommended but not required - please let us know if you have concerns with this.

    We will be working outdoors so please dress for the weather (long pants and layers are recommended). Sturdy, closed-toed shoes are required. Bring your own water bottle and gloves. Extra tools, gloves, and training will be provided. Please bring any medication you may need (Asthma Inhaler, Epi-Pen, etc.) Children are welcome if accompanied by an attentive adult. Unfortunately, there is no bathroom on site. Please stop by, learn about oak woodland ecology, and lend a hand as we enhance this unique oak woodland!  

    Registration is required! Please RSVP by emailing Jack Halsey at 

    See more details

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Educational Opportunities

  • Oswego Lake Watershed Tour   During Summer and Spring OLWC offers monthly watershed tours for area residents to introduce them to Oswego Lake Watershed and provide an overview of watershed science and issues affecting watershed health.  Transportation is in individual vehicles and carpooling for the tours is arranged at the beginning of the tour. Custom tours can also be arranged for groups of up to 15 individuals. Tours are free, but pre-registration is required.

    When: The third Saturday of each month from May through October,  9:00am – 11:00am

    Where: Uplands Elementary School, 2055 Wembley Park Rd, Lake Oswego, OR 97034, United States (map)

    Description: This field trip begins at one of the headwaters of Springbrook Creek and follows the creek route to Oswego Lake with visits at several key areas along the creek. The tour concludes at Oswego Creek as water leaves the lake and makes its way to the Willamette River. This event is free and family-friendly. RSVP is required. Please e-mail Stephanie at to reserve your space.

    RSVP Required — email to reserve your space.

  • Watershed Education Volunteers Needed
    Volunteers are needed to support school programs and watershed tours and programs.  We are particularly looking for individuals who are interested in supporting the 5th grade watershed programs at Tryon Creek or leading watershed tours. Training is provided for all volunteer opportunities. Please contact Stephanie Wagner at for details.


Volunteer Opportunities with Our Partner Organizations

Friends of Springbrook Park

  • Education Events. Events throughout the school year (Dates to be determined.). Project Details: A member of Friends of Springbrook Park will partner with Lake Oswego School District and district faculty to develop and implement curriculum that encourages students to learn about and explore the plants, animals, and ecosystems of Springbrook Park.
    Contact: Anne Lider (503-701-2291).

Friends of Iron Mountain

Iron Mountain Park area in need of maintenance


Friends, spring has been verdant and abundant! Both native and invasive species are flourishing. Our public parks are our own landscapes. They need our maintenance to look well and to provide better ecosystem services which include habitat values.

Please consider helping weed these spaces that welcome visitors to Iron Mountain Park. For more detailed information click on the links below:

Just bring gloves and hand cultivators on the dates given above.


Garden naturally:

Lake Oswego Backyard Habitat Certification Program

Watershed-friendly household maintenance:

  • Soak up driveway spills with kitty litter and throw in the garbage
  • Sweep your driveway instead of washing it
  • Dispose of household hazardous waste at a disposal facility – drains in the street lead to local streams
  • Install a rain garden to slow down and soak up stormwater runoff on your property

Maintain your vehicles to reduce pollution:

  • Fix vehicle fluid leaks to keep them from washing into streams
  • Wash your car at a car wash or over grass

Even your pets can help:

  • Please pick up after your pets – bacteria from dog waste pollutes our waterways