Siskiyou County

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 1,079,550 acres · 1,063,105 state, 16,446 local 27%
  2. High 323,537 acres · 282,004 state, 41,533 local 8%
  3. Moderate 48,796 acres · 38,843 state, 9,953 local 1%
  4. Non-wildland 71,468 acres · Local Responsibility Area 2%
  5. Not mapped by CAL FIRE 2,539,032 acres · Mostly federal land 63%

  4,062,383 acres of land in all, 1,383,951 in the State Responsibility Area and 139,400 in the Local. State zones are the ones the State Fire Marshal designated, in effect since April 1, 2024. Local zones are CAL FIRE's 2025 recommendation, which each city or county adopts by ordinance and can make stricter. How to read fire zones

• Fire history

  The 10 largest of 1,144 fires that burned here

  Map
  1. 2021 Antelope Fire Cause: Lightning 145,593 acres here
  2. 2014 Frying Pan Fire Cause: Lightning 133,154 acres here
  3. 2021 River Complex 199,354 acres in total · Cause: Lightning 99,364 acres here
  4. 1910 Glass Mountain Fire 146,968 acres in total · Cause: Lightning 95,005 acres here
  5. 2021 Mccash Fire Cause: Lightning 94,948 acres here
  6. 2020 Slater Fire 157,430 acres in total 80,736 acres here
  7. 2017 Oak Fire 91,125 acres in total · Cause: Lightning 69,546 acres here
  8. 1987 King Titus Fire Cause: Lightning 68,071 acres here
  9. 2017 Wallow Fire Cause: Lightning 63,771 acres here
  10. 2022 Mckinney Fire 60,092 acres here

  And 1,134 smaller fires. The most recent was the 2025 Willow Fire, which burned 8 acres here. In all, 1,831,747 acres of Siskiyou County have burned. Acres are the land each fire burned here, and fires that crossed less than an acre are not counted. Some older or smaller fires may be missing, and a fire perimeter can include unburned patches. How to read fire history