Wow! It is amazing how people will post bad beta and just try to guess. The East Fork is about 15 miles north of Pagosa Springs. It is a class III but not for an open boat. Where the West and the East Fork come together there is a class IV.
Below Pagosa Springs there is Mesa Canyon. I don't care what CRC says this is a long class II (~13.7 miles). This strech is covered with private land and pissed off ranchers. There is one break spot and it has alot of restrictions.
The lower Delores will not be having releases out of the McPhee again this year. I am not familiar with the lower Delores because they have not released in the past 3 or four years. The Upper Delores is fun and is at fun level right now (1100cfs). It is all private land but you might be able to camp at the take out. Not very good camping though.
PS-Double-a-ron, you talked me into it, I think I will try the Lake Fork.