Cowlitz River coho starting to show Posted on November 21, 2014January 5, 2015 by Bob Rees SW Washington – Cowlitz River coho fishing is starting to slow and fish are turning color. Coho returns to this facility are the highest on record, dating back to 1969. Nearly 80,000 coho have returned.... This post is only available to Members. If you are a Member, please be sure to log in and remember to select the Remember Me option. If you want to become a member or find out more, take a look here.