Got lucky, rolled in about 5pm and got the last of about 10 shady, free campsites. It's a lovely tree-lined stream, what a relief from the day of Nevada desert. Don't believe the Dyrt directions (Sept 2021) as they lead you to a suburban cul-de-sac. Just Google Water Canyon and go there.

A lovely sheltered beach, just off the freeway, clean restrooms. Nothing like sleeping with the sound of waves. Freeway noise is unfortunately continuous also. Campsites are level, and very closely spaced. There is no RV sanitary dump, the Dyrt amenities list is incorrect on this.