Hmmmm ... Disneyphile posted a fairly decent map of Sheep Creek campground in
this earlier post.
The lower map has a red zone marked out, but I believe the desired sites are just outside the red-zone, right along the river. But that gives everyone, I hope, a decent idea of where we're first headed when we get there. (Not shown, but the main road from which you enter is just beyond the top of the maps).