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.

Save the Date!

OLWC’s Annual State of the Watershed Event

Tuesday, March 31st

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.

Welcome Aboard Kat Maloney!

Please welcome our new Community Outreach Specialist, Kat Maloney! She will be leading our outreach and education efforts and is looking forward to meeting all the wonderful community members who work with OLWC.


Clackamas SWCD Awards 2020 Watershed Council Support Grants

“… Clackamas Soil and Water Conservation District Board of Directors unanimously approved Watershed Council Support Grants totaling $118,000. Ten watershed councils are located wholly or partially within Clackamas County boundary. The grant funds represent the second of three years of ongoing support for our partners.”

And guess who is one of the ten watershed councils? YES! Thank you!

2020 Local Native Plant Sales

Click on the image above to find local sources of native plants, including local plant sales, as well as retail, wholesale and native plant seed suppliers. 

This list, provided by the East Multnomah WSCD is not comprehensive and is not an endorsement of any organization or business. It is intended to provide a starting place for your own research. For more resources including what plants to use for different conditions (sunny & dry, shady & wet, etc.), click here.


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: Scotch Broom

Originally introduced as an ornamental shrub and as a dune stabilizer, Scotch broom is one of the most damaging weeds to Oregon. A recent analysis of economic impact from noxious weeds in Oregon found that Scotch broom alone results in a loss of $39.5 million in personal income to Oregonians.


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!


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