Aerial view of the Lake Oswego Watershed

State of the Watershed Event – Sept 14

The Oswego Lake Watershed Council is excited to announce our inaugural State of the Watershed event! The purpose of this free, family-friendly event is...
Oswego Lake, with Mt. Hood in the distance.

Oswego Lake Watershed Tours

Join OLWC Chair Stephanie Wagner for one of the Oswego Lake watershed tours! Our watershed tours are for area residents to introduce them to Oswego Lake...
August 2015 Work Party Volunteers


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

What is the Oswego Lake 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.

'Watershed sounds'

Voice of the Pacific Chorus Frog played with the kind permission of Martyn Stewart,