Since the early-1980s, there has been significant geothermal development in the Honey Lake Valley of northeastern California. Surveying in the late-1970s by the U.S. Bureau of Reclamation indicated the potential for geothermal development in the area, spurring the interest of public and private agencies. Since then, the city of Susanville has taken advantage of a 23-67 C geothermal reservoir for a sizable district heating system, the California Correctional Center (CCC) near Litchfield has installed a 72-74 C geothermal heating system and greenhouse, and two small binary flash steam power plants have been constructed in Wendel and Amadee using a 95-107 C resource