Last time I fished the lake at the mouth the river was braided and tons of floating tree parts all over from the bridge to the open water. Not at all fun in a float tube. Like chic Worthing said you've got to really pay attention to the wind. In the spring it can be dangerous. The river is one of the clearest rivers I've ever seen though. Great hiking and xcountry skiing. I used to get the ferry to drop me off on the east side and hike the ridge line to Stehekin and ride the ferry out. Beautiful views.