Del Norte County

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 45,565 acres · State Responsibility Area 7%
  2. High 53,504 acres · 53,435 state, 69 local 8%
  3. Moderate 93,164 acres · 90,727 state, 2,436 local 14%
  4. Non-wildland 7,301 acres · Local Responsibility Area 1%
  5. Not mapped by CAL FIRE 450,102 acres · Mostly federal land 69%

  649,635 acres of land in all, 189,727 in the State Responsibility Area and 9,806 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 250 fires that burned here

  Map
  1. 2023 Kelly Fire 89,326 acres in total 76,799 acres here
  2. 2020 Slater Fire 157,430 acres in total 30,834 acres here
  3. 2002 Biscuit Fire 501,082 acres in total · Cause: Lightning 28,883 acres here
  4. 2008 Mill Fire 65,882 acres in total · Cause: Lightning 25,383 acres here
  5. 2017 Oak Fire 91,125 acres in total · Cause: Lightning 21,551 acres here
  6. 2023 Mosquito Fire 34,188 acres in total · Cause: Lightning 20,422 acres here
  7. 2008 Blue 2 Fire Cause: Lightning 17,549 acres here
  8. 2015 Peak Fire 11,525 acres in total · Cause: Lightning 11,376 acres here
  9. 2015 Bear Fire 11,617 acres in total · Cause: Lightning 11,165 acres here
  10. 2015 Nickowitz Fire 7,576 acres in total · Cause: Lightning 6,291 acres here

  And 240 smaller fires. The most recent was the 2025 Red Fire, which burned 115 acres here. In all, 263,565 acres of Del Norte 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