White House camp is an easily accessible place to have a basecamp to explore Paria Canyon -- from here you're about 8 miles north of Slide Rock Arch, Buckskin Gulch and the Confluence.  The camp is great except for the fact that there is no shade to speak of, so summer camping can get pretty warm.  Your last water is going to be at Paria Contact Station at the turnoff from the highway, two miles north. Load up.

I think there are 7 drive-in camping spots and a couple of those are pull-throughs; I believe there are also 5 walk-in tent sites.  The night I was there in early June about half of the campsites were occupied.  If you're overnighting in Paria Canyon, there's a nice big parking area for backpackers' cars (10 good-sized spots).