Willamette, McKenzie & Santiam Rivers Fishing Report for August 28th Posted on August 27, 2015 by Michael Teague Water temperatures have been 76 degrees at Willamette Falls. Not much else matters with the lower river closed to all but warm water fishing, except for those who fish for... 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.