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Description: On May 22, 2022, BAER team specialists completed data gathering and analysis for Phase 1 of the Hermits Peak - Calf Canyon burned area. The soil burn severity (SBS) map analyzes 115,542 acres for the Headwaters Gallinas River and Tecolote Creek watersheds. The map and the data display soil burn severity (SBS) categories of unburned/very low, low, moderate, and high. Approximately 51% of the Phase 1 acres are either unburned/very low or low SBS, while 28% sustained a moderate SBS and 21% identified as high SBS. Areas within the watersheds that were assessed continue to burn and the potential for reburn exists where unburned, very low and low SBS is present. Low SBS generally occurs where surface organic layers are not completely consumed and are still recognizable. Structural aggregate stability is not changed from its unburned condition, and roots are generally unchanged because the heat pulse below the soil surface was not great enough to consume or char any underlying organics. The ground surface, including any exposed mineral soil, may appear brown or black (lightly charred), and the canopy and understory vegetation will likely appear “green.” Lower risk for accelerated runoff, erosion, flooding, and debris flows is expected within and below these areas compared to moderate and high SBS. Moderate SBS is documented where up to 80 percent of the pre-fire ground cover (litter and ground fuels) is consumed but generally not all of it. Fine roots may be scorched but are rarely completely consumed over much of the area. The color of the ash on the surface is generally blackened with possible gray patches. There may be potential for recruitment of effective ground cover from scorched needles or leaves remaining in the canopy that will soon fall to the ground. The prevailing color of the site is often “brown” due to canopy needle and other vegetation scorch. Soil structure is generally unchanged. Where greater amounts of reduced soil cover and increased water repellency occur, increased overland flow of water from precipitation is expected, most notably in locations where the overstory canopy no longer exists. High SBS occurs where all or nearly all the pre-fire ground cover and surface organic matter (litter, duff, and fine roots) is generally consumed, and charring may be visible on larger roots. The prevailing color of the site is often “black” due to extensive charring. Bare soil or ash is exposed and susceptible to erosion, and aggregate structure may be less stable. White or gray ash (up to several centimeters in depth) indicates that considerable ground cover or fuels were consumed. Sometimes very large tree roots are entirely burned extending from a charred stump hole. Soil is often gray, orange, or reddish at the ground surface where large fuels were concentrated and consumed. The Phase 1 Hermits Peak - Calf Canyon Fire soil burn severity map can be downloaded at the “Hermits Peak - Calf Canyon Post-Fire BAER” InciWeb site https://inciweb.nwcg.gov/incident/8104/) asa JPEG or PDF version under the “Maps” tab.

Copyright Text: Hermits Peak - Calf Canyon Post-Fire BAER Assessment information is available at: https://inciweb.nwcg.gov/incident/8104/

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