gnaritas, I responded to your PM with lots of information about what you're looking for.
By way of an FYI for everyone, the Army Corps of Engineers has complete control of all waters on the Columbia above Bonneville Dam (a few miles upstream from Portland, OR) and the Snake River. They prohibit liveaboards because they view that as converting private property (the water your boat sits in) to personal use.
Them folks at USACE have absolutely zero sense of humor.
Mike and Tina
Beachcomber 1995 Sea Ray 550 Sedan Bridge