Looking for campsite in southwest usa

RevCindy wrote:
We are planning our retirement and would like to camp from May to October in Maine (where we currently have a seasonal site) and then October to April somewhere in the southwest (excluding Texas). Ideally, we would pay for a year in the southwest so that we wouldn't have to take our camper off the site every year. Also, we want the campground to be on a body of freshwater and has docks on-site. In all my searching, I can't find anything like this. Wondering if it just doesn't exist in the southwest like it does on the east coast?

We've never travelled to the southwest so I'm hoping the collective wisdom here might have some ideas.