Basalt Hill Lookout is a groundhouse and fire lookout overlooking the San Luis Reservoir State Recreation Area in California, United States. It was constructed in 1947 or 1945. The structure was designated as a National Historic Lookout on June 19, 2010, following nomination by Brad Eels. The lookout consists of a CalFire octagonal cab on a tower. The cab has dimensions of and the tower has dimensions of . The lookout is situated at an elevation of . The site is administered by the Department of Forestry and Fire Protection. It has three floors, with the top floor being the observation room. At least one instance of the lease being renewed is known, that being on November 3, 1992, by Raymond Tatian. This site also prominently features his full phone number, place of employment, and P.O. box address.