Industrial Fire Precaution Level (IFPL) Definitions

IFPL Definitions | Terms and Waivers |


Industrial Fire Protection Level System (IFPL)

The Forest Service uses a four-level industrial regulation system to help prevent wildfires by regulating work activities in the forest. This includes personal use firewood cutting. The Mt. Hood NF is divided into 4 IFPL units to which IFPL levels are assigned.

Map showing fire regions


Listed below are the Industrial Fire Precaution Levels, along with brief definitions of each.

IFPL - Level 1 Logo Level I - Closed Season

Fire precaution requirements are in effect. A Fire Watch/Security is required at this and all higher levels unless otherwise waived.

IFPL - Level 2 Logo Level II - Partial Hootowl

The following may operate only between the hours of 8 p.m. and 1 p.m. local time:

  • Power saws except at loading sites;
  • Cable yarding;
  • Blasting;
  • Welding or cutting of metal.
IFPL - Level 3 Logo Level III - Partial Shutdown

The following are prohibited except as indicated:

  • Cable yarding - except that gravity operated logging systems employing nonmotorized carriages may operate between 8 p.m. and 1 p.m. when all blocks and moving lines are suspended 10 feet above the ground except the line between the carriage and the chokers.
  • Power saws - except power saws may be used at loading sites and on tractor/skidder operations between the hours of 8 p.m. and 1 p.m. local time.

In addition, the following are permitted to operate between the hours of 8 p.m. and 1 p.m. local time:

  • Tractor, skidder, feller-buncher, forwarder, or shovel logging operations where tractors, skidders, or other equipment with a blade capable of constructing fireline are immediately available to quickly reach and effectively attack a fire start;
  • Mechanized loading or hauling of any product or material; blasting;
  • Welding or cutting of metal;
  • Any other spark emitting operation not specifically mentioned.
IFPL - Level 4 Logo Level IV - General Shutdown

All operations are prohibited.


Terms that apply to Industrial Fire Precaution Levels

  • Loading sites: A place where any product or material (including, but not limited to logs, firewood, slash, soil, rock, poles, etc.) is placed in or upon a truck or other vehicle.
  • Cable yarding systems: A yarding system employing cables, and winches in a fixed position.
  • Low hazard area: Any area where the responsible agency representative (BIA, BLM, FWS, NPS, ODF, USFS, WDNR) determines the combination of elements reduces the probability of fire starting and/or spreading.
  • Closed season (Fire precautionary period): That season of the year when a fire hazard exists as declared by the responsible agency official.


Written in advance, waivers may be used for any and all activities. Activities for which waivers may be issued include, but are not limited to:

  • mechanized loading and hauling.
  • road maintenance such as sprinkling, graveling, grading and paving.
  • cable yarding using gravity systems or suspended lines and blocks, or other yarding systems where extra prevention measures will significantly reduce the risk of fire.
  • power saws at loading sites or in felling and bucking where extra prevention measures will significantly reduce the risk of fire.
  • maintenance of equipment (other than metal cutting and welding) or improvements such as structures, fences, and powerlines.

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