The ones I know about haven't been mentioned, Walnut RV in Northridge, it's between the 101 and the 118, close to the 405. In Simi Valley is a Ventura County Park, Tapo Canyon, about 3 miles north of the 118, full hookup, long flat sites. There's one close to the Van Nuys airport, Birmingham, or something like that, it's old and tight sites. I agree with others, LA is just not rv friendly, not much there. I assume you are staying at Dockweiler state beach, there's also a private park named Dockweiler rv park, Playa Del Rey???, I think. It's on www.rvparkreviews.com