Tuolumne County

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 240,984 acres · 239,714 state, 1,270 local 17%
  2. High 115,152 acres · 114,408 state, 744 local 8%
  3. Moderate 4,184 acres · State Responsibility Area <1%
  4. Not mapped by CAL FIRE 1,095,333 acres · Mostly federal land 75%

  1,455,654 acres of land in all, 358,306 in the State Responsibility Area and 2,015 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 596 fires that burned here

  Map
  1. 2013 Rim Fire 256,176 acres in total · Cause: Campfire 249,445 acres here
  2. 1996 Ackerson Fire Cause: Lightning 59,105 acres here
  3. 1987 Paper Fire Cause: Lightning 45,020 acres here
  4. 1949 Unnamed fire 26,378 acres here
  5. 2018 Donnell Fire 36,461 acres in total · Cause: Campfire 23,436 acres here
  6. 1996 Rogge Fire Cause: Lightning 20,944 acres here
  7. 1973 Granite Fire Cause: Equipment use 16,290 acres here
  8. 1987 Hamm Fire 33,144 acres in total · Cause: Lightning 16,212 acres here
  9. 1927 Unnamed fire 15,822 acres here
  10. 1920 Unnamed fire 13,344 acres here

  And 586 smaller fires. The most recent was the 2025 Gianelli Fire, which burned 373 acres here. In all, 520,364 acres of Tuolumne 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