How much land does the Federal Government really own

This shocking map illustrates how much land the Federal Government really owns
 

 
Federal landowners are bad neighbors
 
The Heritage Foundation noted that uses of federal lands include national parks, national forests, recreation areas, wildlife refuges, vast tracts of range and wasteland managed by the Bureau of Land Management, reservations held in trust for Native American tribes, military bases, and ordinary federal buildings and installations.
 
Though nobody will dispute the fact that the government needs a certain amount of land for national purposes, do they really need that much? If the federal government would do a good job there wouldn’t be much of an issue. Unfortunately, the majority of federal land managers have an extremely bad reputation.
 
According to Sue Lani Madsen, frustrated local federal land managers are hindered by layers of internal regulations and restricted funding that make a timely response to weed outbreaks difficult. Since federal land is exempt from state noxious weed control laws, having a federally owned plot of land next door is bad news.
 
http://www.naturalnews.com/2017-07-08-th...-owns.html

The following article outlines federal land data for all 50 states. 
 
The federal government owns around 640 million acres of land (about 28 percent) of the 2.27 billion acres of land in the United States. Around 92 percent of federally owned acres are in 12 Western states.[1][2]
 
Four federal agencies—the U.S. National Park Service (NPS), U.S. Fish and Wildlife Service (FWS), and U.S. Bureau of Land Management (BLM) within the U.S. Department of the Interior, and the U.S. Forest Service (USFS) in the U.S. Department of Agriculture—oversee roughly 95 percent, or 608 to 610 million acres, of federal land.
 
https://ballotpedia.org/Federal_land_ownership_by_state