The public land laws of the United States have created a wide diversity of estates in land, each having its own idiosyncrasies. In addition, the lands in public ownership are subject to daily changes in the applicability of the various public land laws, including the mining laws, by virtue of congressional and administrative withdrawals. It is therefore impossible to publish an accurate statewide land status map that would not be obsolete almost immediately. By following the procedures outlined below, however, a reasonably accurate determination of status can be obtained.