Lake County was formed in 1861 from parts of Napa and Mendocino counties.[6][9]
In September and October 2015, a wildfire called the Valley Fire burned more than 76,000 acres of land in Lake County, Napa County, and Sonoma County.[10] The fire destroyed almost 2,000 buildings[11] and threatened almost 7,500 buildings.[12] The fire killed 4 people and left 3,000 people homeless. The damage is estimated at "hundred of millions of dollars".[13]
↑"Find a County". National Association of Counties. Retrieved 2011-06-07.
↑"Feature Detail Report for: Clear Lake". Geographic Names Information System (GNIS). U.S. Department of the Interior. U.S. Geological Survey. 1981-01-19. Archived from the original on 2020-06-06. Retrieved 2015-10-09.
↑ 6.06.1"Lake County". California State Association of Counties. 2014. Retrieved 2015-10-12.
↑"Clear Lake Is Unique". Official Website of the County of Lake. County of Lake. 2013-09-13. Archived from the original on 2015-10-06. Retrieved 2015-10-09.
↑"California County Map". CSAC.org. California State Association of Counties. 2014. Retrieved 2015-09-22.