The only thing more desolate than this campground is the landscape, but perhaps that's your thing. I'm the only one here on a Sunday night in May. A couple pulled in before me, but after a once-around, they left. Each campsite is well sheltered from the sun and wind -- 8' tall plywood windbreak wall plus lattice ceiling with room under it for two picnic tables and your tent. Too much noise from the nearby highway. By the way, if Google maps leads you to the closed picnic area, don't worry, there's a separate campground entrance south of it on the connecting street.
Saturday night in May. All other public campgrounds nearby are booked solid, but there are only 3 other groups here beside me. 1 camper told me the CG is always empty. Why? Because it's at the end of a 7.5 mile dead-end road in an OHV area, yet no OHVers here. No piped water, but the creek is flowing in mid-May of a wet winter. So peaceful. Lots of shade.
I stopped here for lunch. You're in the desert, so hot during the day. There are some trees for shade, especially for the campsites along Yaqui Pass Road. All sites have lattice-work shelters for shade over the picnic tables. Water is listed as non-potable at all faucets. Besides campsites, there are one-room cabins for rent. $35/night for the campsites is a lot, but that is state park practice in CA. National Forest campgrounds are cheaper.
A pleasant campground. I was able to find a shaded campsite with no reservation on a Friday in May at 5 pm. A few bugs, but nothing outrageous. My dog's happy. I'm happy. She's enjoying a chew stick. I'm enjoying a beer.