Skip to main content
U.S. flag

An official website of the United States government

Multimedia

Images

postfire debris flows
Postfire debris flows
Postfire debris flows
Postfire debris flows

Fast-moving, highly destructive debris flows triggered by intense rainfall are one of the most dangerous post-fire hazards. The risk of floods and debris flows after fires increases due to vegetation loss and soil exposure. Cases of sudden and deadly debris flow are well documented along the western United States, particularly in Southern California.

Fast-moving, highly destructive debris flows triggered by intense rainfall are one of the most dangerous post-fire hazards. The risk of floods and debris flows after fires increases due to vegetation loss and soil exposure. Cases of sudden and deadly debris flow are well documented along the western United States, particularly in Southern California.

wildfire stats
Wildfire Stats
Wildfire Stats
Wildfire Stats

USGS fire science informs land, water, and emergency management decisions. Each year tens of thousands of wildfires cause billions of dollars of damage. 

USGS fire science informs land, water, and emergency management decisions. Each year tens of thousands of wildfires cause billions of dollars of damage. 

multi-scale fire triangle
Multi-scale fire triangle: Fire growth and complexity
Multi-scale fire triangle: Fire growth and complexity
Multi-scale fire triangle: Fire growth and complexity

There are three fire-related triangles used to explain fire growth and expansion. The smallest scale "Fire Triangle" factors in oxygen, heat, and fuel. The "Fire Behavior Triangle" factors in topography, fuel, and weather. While the large-scale "Fire Regime Triangle" factors in ignition source, vegetation, and climate.

There are three fire-related triangles used to explain fire growth and expansion. The smallest scale "Fire Triangle" factors in oxygen, heat, and fuel. The "Fire Behavior Triangle" factors in topography, fuel, and weather. While the large-scale "Fire Regime Triangle" factors in ignition source, vegetation, and climate.

wildfire temperatures
How Hot Are Wildfires?
How Hot Are Wildfires?
How Hot Are Wildfires?

How hot do wildfires get? 

  • 570 F degrees - TEMPERATURE AT WHICH WOOD WILL BURST INTO FLAMES
  • 2,200 F degrees - TEMPERATURE WILDFIRES COULD REACH IN EXTREME CONDITIONS

How hot do wildfires get? 

  • 570 F degrees - TEMPERATURE AT WHICH WOOD WILL BURST INTO FLAMES
  • 2,200 F degrees - TEMPERATURE WILDFIRES COULD REACH IN EXTREME CONDITIONS
meet a scientist: rachel loehman
Meet a Fire Scientist: Rachel A. Loehman
Meet a Fire Scientist: Rachel A. Loehman
Meet a Fire Scientist: Rachel A. Loehman

MEET A FIRE SCIENTIST: Rachel A Loehman, Ph.D.

"I study the complexities between people and nature, particularly the impacts of wildfires on landscapes, habitats, and natural resources"

MEET A FIRE SCIENTIST: Rachel A Loehman, Ph.D.

"I study the complexities between people and nature, particularly the impacts of wildfires on landscapes, habitats, and natural resources"

Visual abstract: Orange title, 2 images below on left with circular arrows. Arrow in middle going to 2 images circular arrows
Visual Abstract for Fire Modeling Integration
Visual Abstract for Fire Modeling Integration
Visual Abstract for Fire Modeling Integration

Workflow for integrating fire behavior modeling into post-fire hazard risk models. QUIC-Fire is a fast, 3-D simulation tool for prescribed fire planning. It can help managers understand the complex and dynamic behavior of wildland fires.

Workflow for integrating fire behavior modeling into post-fire hazard risk models. QUIC-Fire is a fast, 3-D simulation tool for prescribed fire planning. It can help managers understand the complex and dynamic behavior of wildland fires.

Videos

La encrucijada del fuego silvestre
La encrucijada del fuego silvestre
La encrucijada del fuego silvestre

La relación entre la gente y los incendios forestales siempre ha sido paradójica: el fuego es esencial como proceso ecológico y herramienta de gestión, pero también puede ser perjudicial para la vida y la propiedad.

La relación entre la gente y los incendios forestales siempre ha sido paradójica: el fuego es esencial como proceso ecológico y herramienta de gestión, pero también puede ser perjudicial para la vida y la propiedad.

Wildfire at the Crossroads
Wildfire at the Crossroads
Wildfire at the Crossroads

The relationship between people and wildfire has always been paradoxical: fire is an essential ecological process and management tool but can also be detrimental to life and property. Consequently, fire regimes have been modified throughout history through both intentional burning to promote benefits and active suppression to reduce risks.

The relationship between people and wildfire has always been paradoxical: fire is an essential ecological process and management tool but can also be detrimental to life and property. Consequently, fire regimes have been modified throughout history through both intentional burning to promote benefits and active suppression to reduce risks.

I Am A...Fire Ecologist
I Am A...Fire Ecologist
I Am A...Fire Ecologist

Welcome to the "The I Am A..." series. This is the third video in a series of USGS whiteboard animations that highlight USGS careers.

Welcome to the "The I Am A..." series. This is the third video in a series of USGS whiteboard animations that highlight USGS careers.

Post-wildfire Flood and Debris Flow: 2014 Silverado Fire
Post-wildfire Flood and Debris Flow: 2014 Silverado Fire
Post-wildfire Flood and Debris Flow: 2014 Silverado Fire

In 2014, the Silverado Fire burned approximately 4 km^2 in Orange County, California. After the fire, the USGS installed an automated rain-triggered camera to monitor post-wildfire flooding and debris flow at the outlet of a small 0.6 km^2 basin within the burn area.

In 2014, the Silverado Fire burned approximately 4 km^2 in Orange County, California. After the fire, the USGS installed an automated rain-triggered camera to monitor post-wildfire flooding and debris flow at the outlet of a small 0.6 km^2 basin within the burn area.

Living with Fire: Wildlife & Wildfires
Living with Fire: Wildlife & Wildfires
Living with Fire: Wildlife & Wildfires

Southern California's fire ecology is unlike that of anywhere else in the United States. Fire control strategies developed for mountain forests don't have the same results here. So can science help uncover new answers to help Southern California communities manage and live with wildfires?

Southern California's fire ecology is unlike that of anywhere else in the United States. Fire control strategies developed for mountain forests don't have the same results here. So can science help uncover new answers to help Southern California communities manage and live with wildfires?

Living with Fire: Fire Decision Model
Living with Fire: Fire Decision Model
Living with Fire: Fire Decision Model

Southern California's fire ecology is unlike that of anywhere else in the United States. Fire control strategies developed for mountain forests don't have the same results here. So can science help uncover new answers to help Southern California communities manage and live with wildfires?

Southern California's fire ecology is unlike that of anywhere else in the United States. Fire control strategies developed for mountain forests don't have the same results here. So can science help uncover new answers to help Southern California communities manage and live with wildfires?