Ted,
The only river in the area that is opened is that Skagit/Sauk rivers above Concrete. They are an easy drive from Everett, just take the Arlington exit off I-5 and go east to Darrington, which will get you to Darrington in about 40 minutes. Once in Darrington, take a right and the road will touch the Sauk at places and take you 25 miles to Rockport and the Skagit.