Willamette River Fishing Report August 18th, 2017 Posted on August 17, 2017 by Bob Rees Willamette River Fishing Report – No report this week, as the warm water fishery continues to produce results for bass and pan fish anglers. Coho are soon to arrive! To access this post, you must purchase Oregon Memberships – Steelhead or Oregon Memberships – Chinook.