I have for many years used this BLM online Map page for finding BLM boundary/areas and campsites/recreation areas. There will be a popup column on right side of page with check boxes for you to select the information you want to see such as recreation areas, etc. You can zoom in onto the state or area down to smallest town or other location. The map is color coded for BLM, Indian, NF, areas and is very detailed for me depending on zoom level. Takes a bit of navigation and getting used to and I saved it to my favorites.
https://blm-egis.maps.arcgis.com/apps/webappviewer/index.html?id=6f0da4c7931440a8a80bfe20eddd7550
https://www.blm.gov/maps
