Bill Monroe: Dredging Is Where It’s At Posted on June 3, 2021June 3, 2021 by Bill Monroe The benthic zone of a river is a critical element for both the river’s food chain and, for migrating salmon and steelhead, a path of lower resistance as they return... 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.