A comparison of the Canadian and American forest fire danger rating systems
Document Type: Book
Author(s): C. E. Van Wagner
Publication Year: 1975

Cataloging Information

  • Canada
  • droughts
  • duff
  • energy
  • fine fuels
  • fire danger rating
  • fire intensity
  • fire management
  • flame length
  • fuel management
  • fuel models
  • fuel moisture
  • fuel types
  • grasses
  • herbaceous vegetation
  • humidity
  • litter
  • moisture
  • overstory
  • pine forests
  • Pinus
  • precipitation
  • rate of spread
  • temperature
  • wind
  • woody plants
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 39127
Tall Timbers Record Number: 13760
TTRS Location Status: In-file
TTRS Call Number: CAN DOCS Information Report PS-X-59 DDW
TTRS Abstract Status: Okay, Fair use, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.


This Report is a technical comparison of the American and Canadian systems of forest fire danger rating. It deals with the three fuel moisture indicators in each system, as well as the indexes of spread and energy release or buildup. The final comparison is between the American family of Burning Indexes and the Canadian Fire Weather Index. The American system has, relative to the Canadian, faster fuel drying, less variation of spread rate and intensity with fuel moisture, and less response to rain; it contains no slow—drying moisture indicator such as the Canadian Duff Moisture Code or Drought Code. The American system is judged best suited to grassy, open forests, and the Canadian system to forests with fairly full canopy and substantial duff layer.

Van Wagner, C. E. 1975. A comparison of the Canadian and American forest fire danger rating systems. Information Report PS-X-59. Chalk River, Ontario, Petawawa Forest Experiment Station.