[U.S. Bureau of Land Management in California - America's Great Outdoors The official website for the Bureau of Land Management (BLM) in California. BLM manages 15.2 million acres of public lands in California, nearly 15% of the state's land area. BLM also administers 47 million acres of subsurface mineral estate underlying federal surface land, 2.5 million acres underlying privately owned land, 592,000 acres of Native American tribal land where BLM has trust responsibility for mineral operations. BLM California also manages 1.6 million acres in northwestern Nevada for cattle grazing, wild horses, recreation and wildlife habitat.]