Aerial view of the Lake Oswego Watershed

State of the Watershed Event – Feb 5

Save the Date! February 5th, 2018 from 6:00-8:00 PM marks the Oswego Lake Watershed Council’s annual State of the Watershed event! The purpose of...

Tryon Creek Watershed Event – Feb 10

You don’t want to miss this fun community event – it is the biggest volunteer day in the Tryon Creek watershed! Volunteers will work...
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.

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