Hi all.
I was just reading a thread about a guy who damaged his truck trying to back into a campsite with a low hanging tree on one side and a drainage ditch on the other.
I found a "free" website called campsitephotos.com, where someone was nice enough to photograph a lot of campsites at a lot of different camp grounds through out the US.
I live in California, and there are 14 pages with 16 different campgrounds on each page in just the California public campground listings. Click on the campground of your choice and it will show most of the individual sites as if you were looking straight into the site.
There are a number of ways to search for a campsite near you, Check it out.
By the way I am in no way affiliate with this site, I just found it by accident while my wife was reserving a campsite.