Duke boy Yes you can run a prop on the Snohomish, if you launch @ Snohomish and head up stream it starts to get shallow on the left side as you go under the railroad tressel. Watch for the tides the river is affected several miles upstream from that point. I wouldn't go much past the Pilchuck river, unless you know the river really well. Going down stream from Snohomish there are also some areas that can get pretty skinny at low tide, look for stumps and such to guide you along, keep and eye on the depth finder if you have one.