That site is actually a private dot . com site - not federal or state. It's run by a couple who travel and camp in the NF sites and post information about each one they visit or have visited. It's been around for years.
As you can see, it contains advertising as well - so, not government although it gives out a lot of government information. I do believe its link was banned off RV.net at one time because of its commercial nature. Not exactly sure how that RV.net policy works, as we see some links to commerical sites and others deleted in some posts.