Willamette, McKenzie & Santiam Rivers Fishing Report for April 1st Posted on March 31, 2016 by Michael Teague Over the past two weeks, the speed of Willamette River water flow has halved while the volume has dropped from 90,000 cfs to less than 40,000 cfs. Of equal importance... 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.