Stayed a night in June, then a night in September. 

NV State Park that was not taking reservations at time we visited, and was 1st come/1st serve (might be different now). June: Picked out a nice spot on W side with shade, but neighbor had obnoxious generator going constantly so we moved to site 2, which was quite nice with shade, access to bathrooms, showers, a water tap on site. $20/night for dry camp for out-of-staters, many have a shade structure over the picnic tables and most appear fairly level. 

For an extra $10 there are a few sites with electric on a bluff above the campground, which is below the dam, on the south side but NO shade or trees, basically on gravel. 

Water in reservoir quite low, so no boats apparent but some rafters. Wild turkeys strutting around the campsite, including one Tom in full fluff. Cell service was one bar and supposed LTE in campground, but unable to pick anything up. Was able to get/send texts from parking lot at put in with Sprint/T-Mobile but limited access in actual campground. 

Plan to check out west side campground later. September: Stayed again on way to Lake Tahoe. No one at attendant booth, just drive in and pay at credit card kiosk or with traditional cash and envelopes. Stayed in site#14 which was quite shady and next to bathrooms, although neighbor showed up late and his truck was parked very close and we heard their talking much of the night. Spotted a great basin gopher snake right next to our trashcan which was startling but it was gone by next day. Campground was initially pretty sparce (arrrived around 2p) but filled up pretty by end of day.