Lands End (cabin area) back West to the State Park Beach. You'll pass entrances for Campground #1. If you're on the Blue Trail you'll see Red Stairways that lead up to the Campground with Water & Restroom availability.
The First Set will take you near Site A32 / Shelter #4.
The Second Set will be near the Camp Host of that Campground.
The Third Set will take you near Site A1. A frost free hydrant is just North of that site.