Peak Fire

Wildfire in Mariposa County, September 2017

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Printed October 28, 2026 from www.firezones.info/fire/7730/peak-fire-2017

Key facts

Started September 3, 2017
Contained September 9, 2017, after 6 days
Burned 678 acres
89th largest fire of 2017
Cause Vehicle
Buildings 4 destroyed, 0 damaged
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Where it burned

County

  1. Mariposa County 677 acres

Acres are the land the fire burned in each county and community, and places where it burned less than an acre are not listed. Communities are cities, towns and the unincorporated places the Census Bureau names, so land outside any of them is counted only in its county.

Buildings damaged

  1. Destroyed Over 50% damaged 4

Buildings CAL FIRE inspected after the fire, by how badly each was damaged. Inspectors record homes, businesses and outbuildings within 100 meters of the fire, and cannot always reach every one, so the counts can differ slightly from other reports.

The same land, other fires

Burned before

  1. 1961 Harlow Fire 43,331 acres in total · Cause: Miscellaneous 52 acres shared
  2. 1962 Bowers Fire 7,738 acres in total 659 acres shared
  3. 1996 Stumpfield Fire 3,710 acres in total 41 acres shared

Acres are the land each fire shares with the Peak Fire, and fires that shared 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 history
CAL FIRE Fire and Resource Assessment Program
Published 28 July 2026
Building damage
CAL FIRE Damage Inspection
Updated 19 October 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