My opinion on making it up to the dam, is to take it extremely slow. When the water Colomn is down, you’re at the mercy of the river. No one ever has a distinct trail on the river. The main channel does have a big rock pile halfway up on the mid to left side. I personally launch and hang next to the the center island, once you reach the end of it, it gets shallow. Take it slow, and make sure if you don’t have power trim, that your motor releases so it can bump up. Of course, this is based off of last falls trips, a lot can change in as little as a day. Stay cautious, and go slow. Shouldn’t have any problems.
Also, I find it best to use the buddy system. I’ve had to break out the paddles and put a guy up front to check depths. Especially when the water gets muddy.