Lake Oswego Watershed Council

The Oswego Lake Watershed Council (OLWC) is a locally organized, non-profit, non-regulatory watershed stewardship organization established to improve the condition and health of the Oswego Lake watershed and its stream network.

Community Outreach Specialist

This position will coordinate community outreach efforts of the Council, with a focus on upland forest enhancement and climate action. Day to day work might include meeting with neighborhood association liaisons, crafting social media posts and emails to promote an upcoming event, and training teachers on the use of our tree monitoring program.

This new OLWC half-time position is funded for ten months per year, with the opportunity to grow the position to more hours in the future.

5th Annual LOSN Celebration!

You’re Invited!

HOST: Lake Oswego Sustainability Network

DATE: Wednesday, January 8, 2020 5:30- 8:00 PM

LOCATION: Lake Oswego United Methodist Church
1855 South Shore Boulevard Lake Oswego, OR 97034

  • This fifth annual Celebration Event will feature two new leaders in our community who will speak about their vision for sustainability.
  • Visit tables from various community groups to learn about their sustainability activities.
  • Enjoy a light buffet while you network with friends and neighbors.

You Can Help

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

Support the OLWC Hallinan Fund

The Coalition for Hallinan Woods Nature Park is a neighborhood organization working to preserve and expand a nature park adjacent to Hallinan Elementary School. We are partnering with Oswego Lake Watershed Council (OLWC) to raise funds in support of Hallinan Woods

Oswego Lake Tree Summit

Let’s Branch Out and
Talk Trees Together!

The Tree Summit is in partnership with the Oswego Lake Watershed Council, the Lake Oswego Sustainability Network, the Mountain Park Homeowners’ Association, and 14 neighborhood associations.


Weed of the Month: English Holly

While not a listed, noxious weed, English holly is still a very invasive plant! Learn the history of this popular holiday greenery and how you can control it on your property to help protect our native plants and wildlife!
#ClackSWCD #EnglishHolly #InvasivePlants #WeedWise


Resources for Residents

Be a part of the solution. There are many ways to help protect watershed health at home.

The links on this page provide useful information to help you improve water quality and wildlife habitat in your yard and your community.



Watershed Councils work with our community members, building a sense of place while together stewarding the land and water. This giving season, we’re collaborating to encourage each of you to connect with the Portland Metro area Watershed Councils where you live, work, and play!