For awhile I have been following campground posts on this forum and other newsletters. If I read of a nice campground, public or private I put it on a google map so I could remember it. Lately I added Interstate and US route Rest Areas I have either used or could find info for. Finally I added information north and west of my home near Cincinnati for travelers from further north that might also be traveling north/south along this corridor.
Blue markers for any, mostly private campgrounds, while Green is mostly used for State or FED campgrounds, and Orange is for highway Rest Areas. The first two letters in the description column is the STATE, and the second part is the area such as east, west, keys, etc. Not every campground is included, just ones that I have read positive reviews on or were highly rated or recommended.
Best part is you can modify the map for your own usage. I am not a Google map expert, but I would use the Copy map OPTION
within Google Maps first then make any changes YOU want to YOUR copy. I don't believe you can EDIT this original map but you can on YOUR copy. Comments, suggestions and improvements encouraged. I know there are many APPS that show campgrounds, but I like the overall visual representation of a large area of this country shown on this map, that shows only highly rated campgrounds AND Rest Areas. I did not realize there were so many Rest Areas on I-10 in FL.
Use and enjoy the map it at your own risk! Have FUN with it.
The picture below is only a representation of the actual google map
Here is the link to the map...