I have the opposite situation as I just moved to Denver from Seattle. I'm suffering withdrawals from being able to boat 365 days a year. Looking forward to the thaw though!
You will love WA boating, as there is so much of it. Most used site is this one...
James, the site master is a dedicated paddler and works hard to keep it real. Lots of WA boaters, mostly out of Seattle area, use the site. Like most sites, there are cool people posting, along with a few knuckleheads. You'll figure it out if you browse through some posts.
Not all the WA boaters are into Professor so PM me and I'll see if I can give you some good beta.