WARNING: Everyone within and downstream of burned areas should remain alert and stay updated on weather conditions that may result in heavy rains over the burn scars. Flash flooding and debris flows may occur quickly during heavy rain events—be ready to evacuate on short notice. Learn how to prepare at: "Post-Wildfire Debris Flows."
2022 WERT Response
Updated August 9, 2023
In 2022, CAL FIRE and the California Geological Survey deployed WERTs to the following major burns located in state responsibility areas:
Colorado Fire
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County Affected: Monterey.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Fairview Fire
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County Affected: Riverside.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
McKinney Fire
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County Affected: Siskiyou.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Mosquito Fire
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Counties Affected: El Dorado and Placer.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Mountain Fire
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County Affected: Siskiyou.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Oak Fire
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County Affected: Mariposa.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
2021 WERT Response
Updated August 9, 2023
Enhanced landslide hazards continue to exist in the 2021 wildfire areas. A typical watershed recovery period after fire is two to five years; but in some areas it can take up to ten years as trees die and roots decay. Please keep this in mind and plan accordingly.
Alisal Fire
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County Affected: Santa Barbara.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Caldor Fire
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Counties Affected: El Dorado, Amador, and Alpine.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Dixie Fire
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Counties Affected: Butte, Plumas, Shasta, Lassen, and Tehama.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
French Fire
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County Affected: Kern.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
2020 WERT Response
Updated August 9, 2023
Enhanced landslide hazards continue to exist in the 2020 wildfire areas. A typical watershed recovery period after fire is two to five years; but in some areas it can take up to ten years as trees die and roots decay. Please keep this in mind and plan accordingly.
Apple and El Dorado Fires
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Counties Affected: Riverside and San Bernardino.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Blue Ridge Fire
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Counties Affected: Orange and Riverside.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Bond and Silverado Fires
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County Affected: Orange.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Carmel Fire
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County Affected: Monterey.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Creek Fire
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Counties Affected: Fresno and Madera.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
CZU Lightning Complex
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Counties Affected: Santa Cruz and San Mateo.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Glass Fire
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Counties Affected: Sonoma and Napa.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
LNU Lightning Complex - Hennessy Fire
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Counties Affected: Napa, Solano, Yolo, Lake, and Colusa.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
LNU Lightning Complex - Walbridge and Meyers Fires
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County Affected: Sonoma.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
North Complex
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Counties Affected: Plumas and Butte.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
- CAL FIRE Incident Archive: Not available.
- InciWeb information: No longer available.
River Fire
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County Affected: Monterey.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
SCU Lightning Complex
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Counties Affected: Santa Clara, Alameda, San Joaquin, Stanislaus, and Merced.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Snow Fire
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County Affected: Riverside.
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Map and Assessment of Post-Fire Debris Flow Hazards:
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Additional Information:
Images from the Field
Select any photo to open it full size in a new window.
WERT members prepare to perform aerial reconnaisance of post-fire hazards. Photo credit: Ellie Spangler, CGS. August 29, 2020.
RIVER FIRE: Burned mountainous terrain above homes in the Pine Canyon area near Salinas, California (Monterey County). These conditions are a concern because of potential for debris flows. Photo credit: Brian Swanson, CGS. August 31, 2020.
CARMEL FIRE: Burned steep slope above Cachagua Road showing extensive dry ravel and associated rockfall hazard in Monterey County, California. Photo credit: Brian Swanson, CGS. August 31, 2020.
RIVER FIRE: Documenting a potential debris flow hazard above a county road. Monterey County, California. Photo credit: Ellie Spangler, CGS. August 30, 2020.
SCU LIGHTNING COMPLEX: Burned hillslopes above Pulse Canyon near San Antonio Valley. Santa Clara County, California. Photo credit: Ellie Spangler, CGS. September 6, 2020.
RIVER FIRE: A CGS and CAL FIRE team performing ground reconnaisance of post-fire hazards. Photo credit: Ellie Spangler, CGS. August 29, 2020.
SCU LIGHTNING COMPLEX: Potential debris flow hazard on Oak Ridge, near Mount Hamilton. Santa Clara County, California. Photo credit: Ellie Spangler, CGS. September 5, 2020.
RIVER FIRE: Don Lindsay (CGS) and Brian Mattos (CAL FIRE) assessing the water repellency of burned soil on a hillside. Monterey County, California. Photo credit: Ellie Spangler, CGS. August 29, 2020.
David Longstreth, senior engineering geologist, was one of many in the field assessing post-fire geohazards in the Santa Cruz area after the 2020 CZU Lightning Complex:
Web page by:
California Geological Survey - Burned Watershed Geohazards Program