Clackamas and Sandy River Fishing Reports and Forecast August 31st, 2018 Posted on August 30, 2018 by Bob Rees Clackamas River Fishing Report – It’s still early for Clackamas River coho but water temperatures in both the Willamette and Clackamas have cooled considerably, allowing for migration to get underway. Clackamas and Sandy River coho... 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.