Willamette River Fishing Report and Forecast May 31st, 2018 Posted on May 31, 2018 by Bob Rees Willamette River Fishing Report – The lower reaches of the Willamette remain the most productive for anglers, likely due to the high water that anglers are taking advantage of near... This post is only available to Members. If you are a Member, please be sure to log in. You can do this on the top right of almost any page on our site. If you want to become a member or find out more, take a look here.