San Bernardino National Forest
U.S. Forest Service
602 S. Tippecanoe Ave.
San Bernardino, CA 92408
APPLE FIRE SOIL BURN SEVERITY MAP RELEASED
SAN BERNARDINO, Calif.— Burned Area Emergency Response (BAER) specialists recently completed their data gathering and verification field work of the Apple Fire burn area. The Soil Burn Severity map has been finalized. Soil Burn Severity levels are Unburned, Low, Moderate, and High.
The map shows that in the Apple Fire area, approximately 25% of the 33,209 acres analyzed by the BAER team is either unburned (5%) or low (20%) soil burn severity, while 50% sustained a moderate soil burn severity, and 25% burned at high soil burn severity.
The BAER post-fire assessment team uses soil burn severity data to identify if there are areas of concern where increased soil erosion, accelerated surface water run-off, and debris flows have the potential to impact human life/safety, property, and critical natural and cultural resources from storm events. The BAER team consists of Forest Service scientists and specialists that are considering emergency stabilization options for those critical resources.
BAER Team Leader Todd Ellsworth said, “The BAER team expects erosion and run-off within the Apple Fire area to increase as a result of the fire because 75% of the burned area experienced moderate or high soil burn severity.” In specific areas that experienced moderate to high soil burn severity, there is concern for increased post-fire run-off from steep hillslopes and resultant increases in post-fire soil erosion and debris flows.
The Apple Fire soil burn severity BAER map can be downloaded at the interagency “Apple Post-Fire BAER” InciWeb site (https://inciweb.nwcg.gov/incident/6939) as a JPEG or PDF version under the “maps” tab.
A "Field Guide for Mapping Post-Fire Soil Burn Severity" can help with interpreting the map and can be found online at http://www.fs.fed.us/rm/pubs/rmrs_gtr243.pdf.
SPECIAL NOTE: Everyone near and downstream from the burned areas should remain alert and stay updated on weather conditions that may result in heavy rains over the burn scars. Flash flooding may occur quickly during heavy rain events-be prepared to take action. Current weather and emergency notifications can be found at the National Weather Service website: www.weather.gov/sgx/.