I have been surfing the Web, looking at RV parks and campgrounds, and scrolling through Google Earth. So many places to go... ... Looking at the map, it looks like there are few RV parks there, other than a few in Anaheim.
I missed this when you originally posted so I apologize. I find it had to believe there is a shortage of RV parks anywhere... not just in California.
I have been building a database of RV Parks and converting the data to a file for my Garmin Nuvi. It is taking a lot of time and, to be honest, it is only up-to-date on the States that I have traveled in during the past couple years (about a dozen or so). In any event my database has 1,329 RV Parks located in California. Additionally, a look in the
Yellow Book shows listings for "Campground RV Park" in California of around 700 parks. I should mention that I, so far, am concentrating on "Commercial" and Public (State/Federal) Parks. There is in addition a list that I subscribe to called
The Day's End Directory -- it has 31 pages of California "Free" parks (Free meaning less than $5 a night before any discounts.)
Here is a screen shot of a California Page of the Day's End Directory:
I have found many sources for RV Park Listings -- not the least of which is
The POI Factory. (I have about 11,000 listings so far.)
As an example: I use
PageRaptor to extract the listings from the Yellow Book. I, then, Convert that Data (it is in Excel XLS form) to MS Word and then into a Excel csv file in which I submit the "Address, City, State" data to
BatchGeo which finds the GPS Coordinates for me. I then take that information add it to the CVS file and then use
Extra POI Editor to convert it to a GPX file for my Garmin.
I would be up for explaining this in more depth if anyone is interested... as far as that goes, I wouldn't be opposed to sharing the whole database.