Trinity County

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 471,699 acres · State Responsibility Area 23%
  2. High 13,683 acres · State Responsibility Area 1%
  3. Moderate 3,186 acres · State Responsibility Area <1%
  4. Not mapped by CAL FIRE 1,564,357 acres · Mostly federal land 76%

  2,052,925 acres of land in all, 488,568 of it in the State Responsibility Area. 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 630 fires that burned here

  Map
  1. 2020 August Complex 1,032,700 acres in total · Cause: Lightning 387,007 acres here
  2. 2021 Monument Fire Cause: Lightning 223,108 acres here
  3. 2021 River Complex 199,354 acres in total · Cause: Lightning 99,897 acres here
  4. 2015 Happy Fire Cause: Lightning 67,550 acres here
  5. 1999 Megram Fire 125,073 acres in total · Cause: Lightning 65,820 acres here
  6. 2006 Bake-Oven Fire 65,050 acres in total · Cause: Lightning 63,281 acres here
  7. 2020 Red Salmon Complex 143,836 acres in total · Cause: Lightning 52,517 acres here
  8. 2006 Pigeon Fire Cause: Miscellaneous 35,091 acres here
  9. 2008 Eagle Fire Cause: Lightning 32,023 acres here
  10. 2008 Yellow Fire Cause: Lightning 31,681 acres here

  And 620 smaller fires. The most recent was the 2025 Cedar Fire, which burned 91 acres here. In all, 1,224,078 acres of Trinity 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