I suggest you add www.rvparkreviews.com to Suzi's links
http://www.forestcamping.com/dow/suzi/links.htm

I find RVParkReviews extremely helpful in finding places to stay while en-route to our National Forests. You do have to make sure both the highly negative and positive comments pertain to what your interests are though. I find some very negative comments just don't pertain to my interests or concerns.