Post Fire Debris Flow Quick Links

Last Updated: November 3, 2021

Key Points about Post-Fire Debris Flows

Normally, vegetation absorbs rainfall, reducing runoff. However, wildfires leave the ground charred, barren, and unable to absorb water, creating conditions ripe for flash flooding and mudflow.

Flood risk remains significantly higher until vegetation is restored—up to 5 years after a wildfire.

While some floods develop over time, flash floods—particularly common after wildfires—can occur within minutes after the onset of a rainstorm. Even areas that are not traditionally flood-prone are at risk, due to changes to the landscape caused by fire.

Source: National Weather Service Post Wild Fire Flash Flood and Debris Flow Guide

Latest Additions

Added links for the Alisal Fire, French Fire, River Complex, Windy Fire, and McCash Fire.

Debris Flow Hazards Webinar Recording

On December 7, 2020 the California Resilience Alliance hosted a Winter Weather Outlook & Debris Flow Hazards Webinar. Don Lindsay from the California Geological Society presented on post-fire effects including erosion-induced debris flows, post-fire models currently being applied to predict hazard, and monitoring program to test models and improve ability to predict post-fire hazards. The video picks up at the Debris Flow Hazards portion of the combined webinar.

Debris Flow Hazard Assessment Maps & County Specific Resources

Wildfires that crossed county lines are included under each of the counties  where a burn scar was left. The impacts of a debris flow may cross into adjacent counties. If your locations of interest are near county lines, it is recommended that you also look at the neighboring county to see if there is potential risk from nearby burn scars.

USGS Hazard Assessments: depict the likelihood of debris-flow generation and estimates of flow magnitude in locations where debris flows initiate. The models do not predict downstream impacts, potential debris-flow runout paths, and the areal extent of debris-flow or flood inundation. Downloadable Goedatabase, Shapefile, and PDFs of the hazard assessment maps are available. Hazard assessments are not updated in subsequent years.

Layers Menu in the top right corner of the USGS Hazard Assessment Maps offers the following options (all are in response to the design rainstorm with a peak 15-minute rainfall intensity of 24mm/hr / 0.94 inches/hr):

  • Basin / Segment Probability (probability of a debris flow as a percent range)
  • Basin / Segment Volume (predicted volume in cubic meters)
  • Basin / Segment Hazard (combined relative debris flow hazard)

Alameda County


SCU Lightning Complex (2020): Basin hazard per USGS assessment is low to moderate. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the SCU Lightning Complex.

 

Alpine County


Caldor Fire (2021): Basin hazard per USGS assessment is mostly moderate with a few areas of high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps and full BAER report are available.

Tamarack Fire (2021): Basin hazard per USGS assessment is mostly moderate with a few areas of high.

Slink Fire (2020): Basin hazard per USGS assessment is low to moderate.

Donnell and McCormick Fire (2018): Basin hazard per USGS assessment is mostly mostly moderate with some areas of high.

McCormick Fire (2017): Basin hazard per USGS assessment is moderate to high.

 

Amador County


Caldor Fire (2021): Basin hazard per USGS assessment is mostly moderate with a few areas of high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps and full BAER report are available.

 

Butte County


Dixie Fire (2021): Basin hazard per USGS assessment is mostly moderate with areas of high. (preliminary assessment). US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available.

North Complex (2020): Basin hazard per USGS assessment is moderate to high.

Camp Fire (2018): Basin hazard per USGS assessment is low to moderate with some areas of high. Joint Agency Watershed Emergency Response Team Final Report.

Cherokee Fire (2017): Basin hazard per USGS assessment is mostly low with an area of moderate.

Wind Complex – Cascade Fire (2017): Basin hazard per USGS assessment is mostly low with a few areas of moderate.

 

Colusa County


LNU Lightning Complex – Hennessey Fire (2020): Basin hazard per USGS assessment is mostly low to moderate with a larger area of high south of Lake Berryessa. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the Hennessey Fire.

 

Del Norte County


Slater Fire (2020): Basin hazard per USGS assessment is high. US Forest Service Burned Area Emergency Response (BAER) full report and Soil Burn Severity Maps are also available.

Eclipse Complex – Oak Fire (2017): Basin hazard per USGS assessment is moderate to high.

Orleans Complex – Haypress Fire (2017): Basin hazard per USGS assessment is low to moderate with an area of high.

Orleans Complex – Ukonom Fire (2017): Basin hazard per USGS assessment is low to moderate.

 

El Dorado County


Caldor Fire (2021): Basin hazard per USGS assessment is mostly moderate with a few areas of high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps and full BAER report are available.

 

Fresno County


Creek Fire (2020): Basin hazard per USGS assessment is moderate to high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available.

 

Glenn County


August Complex (2020): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available. A full BAER report is also available for the South Zone.

 

Humboldt County


Knob Fire (2021): Basin hazard per USGS assessment is low to moderate. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available.

Red Salmon Complex (2020): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available, including a text description.

 

Kern County


French Fire (2021): Basin hazard per USGS assessment is mostly moderate with an area of high. US Forest Service Burned Area Emergency Response (BAER) full report and Soil Burn Severity Maps .

 

Lake County


August Complex (2020): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available. A full BAER report is also available for the South Zone.

LNU Lightning Complex – Hennessey Fire (2020): Basin hazard per USGS assessment is mostly low to moderate with a larger area of high south of Lake Berryessa. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the Hennessey Fire.

Mendocino Lake Complex – Sulfur Fire (2017): Basin hazard per USGS assessment is low to moderate.

 

Lassen County


Beckwourth Complex (2021): Basin hazard per USGS assessment is moderate with one area of high.

Dixie Fire (2021): US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are available.

Loyalton Fire (2020): Basin hazard per USGS assessment is low to moderate.

Sheep Fire (2020): Basin hazard per USGS assessment is moderate with some areas low.

 

Los Angeles County


Department of Public Works – Debris and Mudflow Potential Forecast

Bobcat Fire (2020): Basin hazard per USGS assessment is moderate to high, with the high being mostly in the southern portion. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available.

Lake Fire (2020): Basin hazard per USGS assessment is moderate to high. US Forest Service Burned Area Emergency Response (BAER) full report and Soil Burn Severity Maps are also available.

Ranch 2 Fire (2020): Basin hazard per USGS assessment is high. US Forest Service Burned Area Emergency Response (BAER) full report and  Soil Burn Severity Maps are also available.

Getty Fire (2019): Basin hazard per USGS assessment is low to moderate.

Saddle Ridge Fire (2019): Basin hazard per USGS assessment is low to moderate.

Tick Fire (2019): Basin hazard per USGS assessment is low.

Woolsey Fire (2018): Basin hazard per USGS assessment is mostly moderate with some larger areas of high.

Creek Fire (2017): Basin hazard per USGS assessment is moderate to high.

La Tuna Fire (2017): Basin hazard per USGS assessment is moderate to high.

Rye Fire (2017): Basin hazard per USGS assessment is low.

Skirball Fire (2017): Basin hazard per USGS assessment is low to moderate.

 

Madera County


Creek Fire (2020): Basin hazard per USGS assessment is moderate to high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available.

Railroad Fire (2017): Basin hazard per USGS assessment is low to moderate with two small areas of high.

South Fork Fire (2017): Basin hazard per USGS assessment is low to moderate.

 

Marin County


Woodward Fire (2020): Basin hazard per USGS assessment is mostly low to moderate with one area of high.

 

Mariposa County


Briceburg Fire (2019): Basin hazard per USGS assessment is moderate.

Detwiler Fire (2017): Basin hazard per USGS assessment is moderate with a few areas of high.

Railroad Fire (2017): Basin hazard per USGS assessment is low to moderate with two small areas of high.

South Fork Fire (2017): Basin hazard per USGS assessment is low to moderate.

 

Mendocino County


August Complex (2020): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available. A full BAER report is also available for the South Zone.

Mendocino Lake Complex – Redwood Valley Fire (2017): Basin hazard per USGS assessment is mostly moderate with one area of high.

 

Merced County


SCU Lightning Complex (2020): Basin hazard per USGS assessment is low to moderate. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the SCU Lightning Complex.

 

Modoc County


Cove Fire (2017): Basin hazard per USGS assessment is low to moderate.

Parker 2 Fire (2017): Basin hazard per USGS assessment is mostly moderate.

Steele Fire (2017): Basin hazard per USGS assessment is low.

 

Mono County


Slink Fire (2020): Basin hazard per USGS assessment is low to moderate.

Boot Fire (2018): Basin hazard per USGS assessment is moderate.

Slinkard Fire (2017): Basin hazard per USGS assessment is moderate.

 

Monterey County


Monterey County Post-Fire Watershed Values at Risk Map

Willow Fire (2021): Basin hazard per USGS assessment is high. The US Forest Service has also released its Willow Fire Burn Area Report.

Carmel Fire (2020): Basin hazard per USGS assessment is low to moderate. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the River and Carmel Fires.

Dolan Fire (2020): Basin hazard per USGS assessment is moderate to high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available. The US Forest Service has also released its Dolan Fire Burn Area Report.

River Fire (2020): Basin hazard per USGS assessment is mostly low to moderate with two area of high hazard. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the River and Carmel Fires.

 

Napa County


Napa County’s GIS WERT Report Post-Fire Map

Glass Fire (2020): Basin hazard per USGS assessment is mostly low to moderate with some areas of high. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the Glass Fire. Napa County has also created a WERT Map for the Glass Fire.

LNU Lightning Complex – Hennessey Fire (2020): Basin hazard per USGS assessment is mostly low to moderate with a larger area of high south of Lake Berryessa. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the Hennessey Fire. Napa County has also created a WERT Map for the LNU Lightning Complex – Hennessey Fire.

Kincade Fire (2019): Basin hazard per USGS assessment is mostly moderate with a larger portion of high in the northern section.

Atlas Fire (2017): Basin hazard per USGS assessment is low to moderate with one small area of high.

Nuns Fire (2017): Basin hazard per USGS assessment is low to moderate with a few areas of high in the northern portion.

Tubbs Fire (2017): Basin hazard per USGS assessment is low to moderate.

 

Nevada County


River Fire (2021): Basin hazard per USGS assessment is low to moderate.

Farad Fire (2017): Basin hazard per USGS assessment is low to moderate.

Wind Complex – Lobo Fire (2017): Basin hazard per USGS assessment is low with a few areas of moderate.

Wind Complex – McCourtney Fire (2017): Basin hazard per USGS assessment is low.

 

Orange County


Orange County Public Work’s Homeowners’ Guide for Flood, Debris, and Erosion Control after Fires

Blue Ridge Fire (2020): Basin hazard per USGS assessment is low to moderate.

Bond Fire (2020): Basin hazard per USGS assessment is low to moderate.

Silverado Fire (2020): Basin hazard per USGS assessment is low to moderate.

Holy Fire (2018): Basin hazard per USGS assessment is mostly high.

Canyon Fire (2017): Basin hazard per USGS assessment is low to moderate.

Canyon 2 Fire (2017): Basin hazard per USGS assessment is low to moderate.

 

Placer County


River Fire (2021): Basin hazard per USGS assessment is low to moderate.

 

Plumas County


Beckwourth Complex (2021): Basin hazard per USGS assessment is moderate with one area of high.

Dixie Fire (2021): Basin hazard per USGS assessment is mostly moderate with areas of high. (preliminary assessment). US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available.

Loyalton Fire (2020): Basin hazard per USGS assessment is low to moderate.

North Complex (2020): Basin hazard per USGS assessment is moderate to high.

North Complex – Claremont Fire (2020): Basin hazard per USGS assessment is mostly moderate to high with some perimeter areas being low.

Sheep Fire (2020): Basin hazard per USGS assessment is moderate with some areas low.

Walker Fire (2019): Basin hazard per USGS assessment is mostly low to moderate with some areas of high.

Minerva 5 Fire (2017): Basin hazard per USGS assessment is moderate.

 

Riverside County


Blue Ridge Fire (2020): Basin hazard per USGS assessment is low to moderate.

Snow Fire (2020): Basin hazard per USGS assessment is low to moderate. US Forest Service Burned Area Emergency Response (BAER) Burned Area Reflectance Classification Maps are also available. The Forest Service has also released its Snow Fire Burn Area Report.

Apple and El Dorado Fires (2020): Basin hazard per USGS assessment is moderate to high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity and Slope Maps are also available for the Apple Fire and Soil Burn Severity Maps for the El Dorado Fire. The Forest Service has also released its El Dorado Fire Burn Area Report and Apple Fire Burn Area Report. On September 30 Riverside County hosted a Flood After Fires Community Meeting for the Apple Fire.

Tenaja Fire (2019): Basin hazard per USGS assessment is low to moderate.

Holy Fire (2018): Basin hazard per USGS assessment is mostly high. The County has released the California Geological Survey’s Holy Fire Debris Flow Inundation Hazard Assessment within Riverside County Report

Canyon Fire (2017): Basin hazard per USGS assessment is low to moderate.

Canyon 2 Fire (2017): Basin hazard per USGS assessment is low to moderate.

Wildomar Fire (2017): Basin hazard per USGS assessment is low.

 

San Bernardino County


Apple and El Dorado Fires (2020): Basin hazard per USGS assessment is moderate to high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity and Slope Maps are also available for the Apple Fire and Soil Burn Severity Maps for the El Dorado Fire. The Forest Service has also released its El Dorado Fire Burn Area Report and Apple Fire Burn Area Report.

Blue Ridge Fire (2020): Basin hazard per USGS assessment is low to moderate.

Hillside Fire (2019): Basin hazard per USGS assessment is low.

 

San Diego County


Valley Fire (2020):  Basin hazard per USGS assessment is low to moderate. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity, Debris Flow, and Erosion Maps are also available. The Forest Service has also released several additional reports related to post fire hazards from the Valley Fire: Burn Area Report, BAER Assessment Specialist Report – Geological Hazards, Soils Report, and a Post-Fire Watershed Response: Hydrology Report.

Gate Fire (2017): Basin hazard per USGS assessment is low to moderate.

Lilac Fire (2017): Basin hazard per USGS assessment is low.

Jennings 2 Fire (2017): Basin hazard per USGS assessment is low to moderate.

 

San Joaquin County


SCU Lightning Complex (2020): Basin hazard per USGS assessment is low to moderate. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the SCU Lightning Complex.

 

San Mateo County


CZU Lightning Complex (2020): Basin hazard per USGS assessment is moderate to high with some areas of low. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the CZU Lightning Complex. Map showing evacuation zones and debris flow risk throughout the CZU Lightning Complex fire zone.

 

Santa Barbara County


Alisal Fire (2021): Basin hazard per USGS assessment is moderate with one area of high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps.

Scorpion Fire (2020): Basin Hazard per USGS assessment is low. This fire is in Channel Island National Park on one of the islands off the coast of California.

Cave Fire (2019): Basin hazard per USGS assessment is moderate with some of the southern portions low.

Thomas Fire (2017): Basin hazard per USGS assessment is moderate too high.

Whittier Fire (2017): Basin hazard per USGS assessment is moderate to high.

 

Santa Clara County


SCU Lightning Complex (2020): Basin hazard per USGS assessment is low to moderate. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the SCU Lightning Complex.

 

Santa Cruz County


County Resource Conservation District – Post Fire Recovery

CZU Lightning Complex (2020): Basin hazard per USGS assessment is moderate to high with some areas of low. A Memorandum “Landslide and Debris Flow Hazard Conditions Now Threatening the San Lorenzo Valley, Caused by the CZU Wildfire” to the District Board of Directors and public also provides addition information about the post-fire risks in the area. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the CZU Lightning Complex. The California Department of Conservation also conducted a Boulder Creek Post-WERT Study for this fire. Map showing evacuation zones and debris flow risk throughout the CZU Lightning Complex fire zone. Santa Cruz County Potential Debris Flow Hazard Area Map. Recordings of County Debris Flow Town Hall Meetings – District Five (11/12/20) and District Three (11/13/20). Recording of the County Board of Supervisors presentation Post-CZU lightning Complex Fire Debris Flow Hazards (9/29/20). Santa Cruz County has also released a 2020 CZU Lightning Complex Fire Post-Fire Watershed Recovery Guide – Learn how to stay safe, protect your property, and preserve our natural resources.

 

Shasta County


Dixie Fire (2021): US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are available.

McFarland Fire (2021): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) Assessment Report and  Soil Burn Severity Maps.

Salt Fire (2021): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) full report and Soil Burn Severity Maps are also available.

Carr Fire (2018): Basin hazard per USGS assessment is moderate to high. US Forest Service Burned Area Emergency Response Plan.

Hirz and Delta Fires (2018): Basin hazard per USGS assessment is moderate to high.

 

Sierra County


Loyalton Fire (2020): Basin hazard per USGS assessment is low to moderate.

Farad Fire (2017): Basin hazard per USGS assessment is low to moderate.

 

Siskiyou County


Antelope Fire (2021): Basin hazard per USGS assessment is low to moderate with an area of high.

Lava Fire (2021): Basin hazard per USGS assessment is moderate. US Forest Service Burned Area Emergency Response (BAER) full report and Soil Burn Severity Maps are also available.

McCash Fire (2021): Basin hazard per USGS assessment is moderate to high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps

River Complex (2021): Basin hazard per USGS assessment is moderate to high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps

Tennant Fire (2021): Basin hazard per USGS assessment is low to moderate. US Forest Service Burned Area Emergency Response (BAER) full report and Soil Burn Severity Maps are also available.

Devil Fire (2020): Basin hazard per USGS assessment is moderate. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available.

Red Salmon Complex (2020): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available, including a text description.

Slater Fire (2020): Basin hazard per USGS assessment is high. US Forest Service Burned Area Emergency Response (BAER) full report and Soil Burn Severity Maps are also available.

Lime Fire (2019): Basin hazard per USGS assessment is moderate.

Eclipse Complex – Abney Fire (2017): Basin hazard per USGS assessment is moderate to high.

Eclipse Complex – Cedar Fire (2017): Basin hazard per USGS assessment is mostly moderate.

Eclipse Complex – Oak Fire (2017): Basin hazard per USGS assessment is moderate to high.

Salmon Complex Fire (2017): Basin hazard per USGS assessment is moderate to high.

 

Solano County


LNU Lightning Complex – Hennessey Fire (2020): Basin hazard per USGS assessment is mostly low to moderate with a larger area of high south of Lake Berryessa. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the Hennessey Fire.

Atlas Fire (2017): Basin hazard per USGS assessment is low to moderate with one small area of high.

 

Sonoma County


County of Sonoma Post-Fire Hazard Assessment Map

Sonoma County – Preparing for Rain After Wildfires

How to Prepare Burned Properties for Rain after the Glass Fire

City of Santa Rosa – Preparing for Rain After Wildfires

Glass Fire (2020): Basin hazard per USGS assessment is mostly low to moderate with some areas of high. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the Glass Fire.

LNU Lightning Complex – Meyers Fire (2020): Basin hazard per USGS assessment is mostly low to moderate with one area high.

LNU Lightning Complex – Walbridge Fire (2020): Basin hazard per USGS assessment is mostly low to moderate with two larger areas of high.

Kincade Fire (2019): Basin hazard per USGS assessment is mostly moderate with a larger portion of high in the northern section. Sonoma County also has a post-fire hazard assessment map that includes debris flow.

Nuns Fire (2017): Basin hazard per USGS assessment is low to moderate with a few areas of high in the northern portion.

Pocket Fire (2017): Basin hazard per USGS assessment is low to moderate with one area of high.

Tubbs Fire (2017): Basin hazard per USGS assessment is low to moderate.

Sonoma County also has a Post Fire Debris Flow Likelihood for Nuns, Tubbs and Atlas Fires GIS Maps

 

Stanislaus County


SCU Lightning Complex (2020): Basin hazard per USGS assessment is low to moderate. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the SCU Lightning Complex.

 

Tehama County


Dixie Fire (2021): US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are available.

McFarland Fire (2021): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) Assessment Report and  Soil Burn Severity Maps.

August Complex (2020): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available. A full BAER report is also available for the South Zone.

 

Trinity County


McFarland Fire (2021): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) Assessment Report and  Soil Burn Severity Maps.

Monument Fire (2021): Basin hazard per USGS assessment is mostly moderate with some areas of high.US Forest Service Burned Area Emergency Response (BAER) Assessment Report and Soil Burn Severity Maps .

River Complex (2021): Basin hazard per USGS assessment is moderate to high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps

August Complex (2020): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available. A full BAER report is also available for the South Zone.

Red Salmon Complex (2020): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps are also available, including a text description.

Helena and Fork Fire (2017): Basin hazard per USGS assessment is moderate with two areas of high.

 

Tulare County


Windy Fire (2021): Basin hazard per USGS assessment is moderate to high. US Forest Service Burned Area Emergency Response (BAER) Soil Burn Severity Maps .

SQF Complex – Castle Fire (2020): Basin hazard per USGS assessment is mostly moderate with some areas of high. US Forest Service Burned Area Emergency Response (BAER) full report and Soil Burn Severity and Debris Flow Maps are also available along with a text description of the soil burn severity map.

SQF Complex – Rattlesnake Fire (2020): Basin hazard per USGS assessment is los to moderate.

Pier Fire (2017): Basin hazard per USGS assessment is moderate to high.

 

Tuolumne County


Donnell and McCormick Fire (2018): Basin hazard per USGS assessment is mostly moderate with some areas of high.

McCormick Fire (2017): Basin hazard per USGS assessment is moderate to high.

 

Ventura County


Maria Fire (2019): Basin hazard per USGS assessment is mostly moderate with one area of high.

Hill Fire (2018): Basin hazard per USGS assessment is low.

Woolsey Fire (2018): Basin hazard per USGS assessment is mostly moderate with some larger areas of high.

Thomas Fire (2017): Basin hazard per USGS assessment is moderate too high.

 

Yolo County


LNU Lightning Complex – Hennessey Fire (2020): Basin hazard per USGS assessment is mostly low to moderate with a larger area of high south of Lake Berryessa. Cal OES and the California Department of Conservation have released a Watershed Emergency Response Team Evaluation for the Hennessey Fire.

 

Yuba County


Wind Complex – Cascade Fire (2017): Basin hazard per USGS assessment is mostly low with a few areas of moderate.