Glenn County

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 106,911 acres · State Responsibility Area 13%
  2. High 201,723 acres · 185,809 state, 15,914 local 24%
  3. Moderate 9,081 acres · 4,692 state, 4,389 local 1%
  4. Non-wildland 290,817 acres · Local Responsibility Area 34%
  5. Not mapped by CAL FIRE 240,741 acres · Mostly federal land 28%

  849,273 acres of land in all, 297,413 in the State Responsibility Area and 311,119 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 86 fires that burned here

  Map
  1. 2020 August Complex 1,032,700 acres in total · Cause: Lightning 188,848 acres here
  2. 2018 Ranch Fire 410,202 acres in total · Cause: Miscellaneous 38,706 acres here
  3. 1922 Grindstone Fire 39,806 acres in total · Cause: Miscellaneous 37,719 acres here
  4. 2001 Trough Fire 24,927 acres in total · Cause: Miscellaneous 11,094 acres here
  5. 1979 Squaw Ridge Fire 6,861 acres here
  6. 1961 Logan Fire 6,707 acres here
  7. 2003 Spanish Fire Cause: Campfire 6,050 acres here
  8. 1952 Sevier Fire 4,877 acres here
  9. 2006 Hunter Fire 16,234 acres in total · Cause: Lightning 3,121 acres here
  10. 1921 Greens Valley Fire Cause: Campfire 2,573 acres here

  And 76 smaller fires. The most recent was the 2024 203 Fire, which burned 5 acres here. In all, 264,673 acres of Glenn 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