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This guidance document outlines best management practices for fuel treatment within British Columbia's Interior-Wet Fire Weather Zone, a region characterized by its productive forests and diverse tree species like western cedar and hemlock. While typically experiencing higher precipitation and less frequent stand-replacing wildfires, drier subzones are prone to mixed-severity fire regimes. The guide emphasizes managing surface fuels, ladder fuels that allow fire to climb, and crown fuels to reduce the intensity and spread of wildfires, especially given the increased risk from climate change-induced drought and successful fire suppression efforts near communities. The document aims to provide professional guidance for mitigating wildfire threats through strategic fuel management and maintaining forest health.

This document synthesizes existing research on forest fuel treatments and their effectiveness in modifying wildfire behavior. Recognizing that the local, currently wetter forests are projected to become similar to drier, fire-prone forests of the Western US due to climate change, the report explores how fuel treatments can reduce wildfire intensity and spread. It defines fuel treatments and outlines their objectives, such as ecosystem restoration and protecting communities, emphasizing that these actions aim to change fire behavior, not prevent fire ignition. Furthermore, the report delves into empirical evidence from past wildfires encountering treated areas, highlighting key principles for effective treatments in mature stands, including surface fuel reduction, increasing height to live crown, decreasing crown density, and retaining large fire-resistant trees. The ultimate purpose is to provide guidance for implementing appropriate and effective fuel management strategies in the Southern West Kootenays.