Lake County

County in California

Search for an address

Report created October 27, 2026 at www.firezones.info/county/033/lake

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    45% Very High

    Most of the Very High land is in the State Responsibility Area, where the State Fire Marshal's zones apply.

    Open map

  • Fire history

    Share of the land inside a recorded wildfire perimeter

    74% has burned

    Most recently the 2025 Arden Fire, which burned 26 acres here, one of 301 fires on record.

    Open map

  • Power line fire risk

    Share of the land in the High Fire-Threat District

    20% Extreme

    Utilities may shut off power in the CPUC High Fire-Threat District in fire weather, and homes outside it can lose power when their lines run through it.

    Open map

Land by hazard class

  1. Very High 381,554 acres · 366,017 state, 15,537 local 45%
  2. High 29,860 acres · 22,344 state, 7,516 local 4%
  3. Moderate 13,811 acres · 6,247 state, 7,563 local 2%
  4. Non-wildland 45,715 acres · Local Responsibility Area 5%
  5. Not mapped by CAL FIRE 379,011 acres · Mostly federal land 45%

849,951 acres of land in all, 394,608 in the State Responsibility Area and 76,332 in the Local. State zones are the ones the State Fire Marshal designated, in effect since 1 April 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

Largest fires

  1. 2018 Ranch Fire Of 410,202 acres in all · Cause: Miscellaneous 282,738 acres
  2. 1996 Fork Fire Cause: Arson 82,617 acres
  3. 2015 Valley Fire Of 76,085 acres in all 71,080 acres
  4. 2015 Rocky Fire Of 69,438 acres in all · Cause: Miscellaneous 53,332 acres
  5. 2020 August Complex Of 1,032,700 acres in all · Cause: Lightning 44,476 acres
  6. 2018 River Fire Of 48,920 acres in all 38,517 acres
  7. 1973 Barkerville Fire Cause: Miscellaneous 26,428 acres
  8. 1981 Cow Mtn. Fire Of 25,664 acres in all · Cause: Arson 24,170 acres
  9. 2020 Hennessey Fire Of 305,352 acres in all · Cause: Lightning 21,064 acres
  10. 1966 Round Fire Cause: Campfire 20,863 acres

And 291 smaller fires. In all, 627,745 acres of Lake 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

Sources

Fire hazard severity zones
CAL FIRE Office of the State Fire Marshal
State map published 27 June 2025, local map 2 February 2026
Fire history
CAL FIRE Fire and Resource Assessment Program
Published 28 July 2026
Power line fire risk
California Public Utilities Commission
Published 23 February 2026

This site is independent and not affiliated with CAL FIRE or the CPUC, so for an official determination, check with the agency or your city or county. How we read the data

Nearby areas

Cities and towns in Lake County

Unincorporated communities in Lake County

ZIP codes in Lake County

Neighboring counties

  1. Lake County 45% Very High · this area
  2. Colusa County 23% Very High
  3. Glenn County 13% Very High
  4. Mendocino County 36% Very High
  5. Napa County 53% Very High
  6. Sonoma County 33% Very High
  7. Yolo County 18% Very High