Project Introduction

The Fire and Resource Assessment Program (FRAP) compiles fire perimeters and has established an on-going fire perimeter data capture process. CAL FIRE, the United States Forest Service Region 5, the Bureau of Land Management, and the National Park Service jointly develop the fire perimeter GIS layer for public and private lands throughout California at the end of the calendar year. Upon release, the data is current as of the last calendar year.

The fire perimeter database represents the most complete digital record of fire perimeters in California. However it is still incomplete in many respects. Fire perimeter database users must exercise caution to avoid inaccurate or erroneous conclusions. For more information on potential errors and their source please review the methodology section of these pages.

The fire perimeters database is an ESRI ArcGIS file geodatabase with three data layers (feature classes):

  • A layer depicting wildfire perimeters from contributing agencies current as of the previous fire year;
  • A layer depicting prescribed fires supplied from contributing agencies current as of the previous fire year;
  • A layer representing non-prescribed fire fuel reduction projects that were initially included in the database. Fuels reduction projects that are non prescribed fire are no longer included.

Croy fire example map

There are many uses for fire perimeter data. For example, it is used on incidents to locate recently burned areas that may affect fire behavior (see map left).

Other uses include:

  • Improving fire prevention, suppression, and initial attack success.
  • Reduce and track hazards and risks in urban interface areas.
  • Provide information for fire ecology studies for example studying fire effects on vegetation over time.


Database Description

Example Map

This page last updated on 4/18/2017



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