Willamette River Fishing Report and Forecast Posted on September 17, 2020September 20, 2020 by Bob Rees Coho begin to show, may not pass Willamette Falls this year Willamette River Fishing Report – For the few versed in successfully fishing for coho in the mainstem Willamette, now... To access this post, you must purchase Oregon Memberships – Steelhead or Oregon Memberships – Chinook.