I have only been to Raystown twice, the last time in April 2006. I do not remember much except the COE campground was very nice with some of the sites right on the water. It is very difficult to reserve sites, especially those on the water. Reservations have to be made through the national reservation system. The prime sites as well as most other sites will already be reserved for the entire summer of 2015. Not sure, but I think they start taking reservations on January 1 each year. The lake is the largest man-made lake in PA; it is located in a beautiful area of PA.
Ray