Upper Willamette System Fishing Report and Forecast Posted on August 10, 2023August 10, 2023 by Glenn Zinkus Green Peter Closed To Boating – Scooping Water For Wiley Fire Control. Willamette River Slough Bass Again This Week. Detroit Reservoir Kokes. Upper McKenzie – The Best Bet For Trout. Alton Baker Canal: Alton Baker... 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. If you are looking for our free content head here. And, if you need a hand, please reach out here.