Landslide Hazards
Landslide Hazards
The primary objective of the National Landslide Hazards Program is to reduce long-term losses from landslide hazards by improving our understanding of the causes of ground failure and suggesting mitigation strategies. Explore and search below.
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Glenwood Canyon, Colorado, Flooding and Debris Flows: 2021
Summer storms on the Grizzly Creek burn area have resulted in repeated flooding and debris flows that are having enormous impacts in Glenwood Canyon. This Story Map collection summarizes the June and July events.
Bond Fire Debris Flows, California: January 25 and 28, 2021
On Wednesday, December 2, 2020 at approximately 10:15 PM PST, the Bond wildfire ignited in Orange County, California, burning partially within the Cleveland Forest, near Silverado Canyon just north of the area burned by the October 2020 Silverado fire. The fire burned 27 square kilometers (sq km) prior to containment on December 10, 2020 (CalFire). Fuels were primarily chaparral, brush, and tall...
Tadpole Fire Debris Flows, New Mexico: July and September 2020
On Saturday, June 6, 2020 at approximately 1:45 PM MDT, the Tadpole wildfire ignited in the Gila National Forest, approximately 19 kilometers (km) north of Silver City, Grant County, New Mexico. The fire burned 45 square kilometers prior to containment in early July, 2020 (Inciweb). Fuels were primarily timber with grass understory, brush, and chaparral. The Brush, Bringham, and Bighorn fires in...
Woodbury Fire, Arizona Debris Flows - September 2019
On Saturday, June 8, 2019 at approximately 1:30 PM MST, the Woodbury wildfire ignited approximately 8 kilometers (km) northwest of Superior, Arizona. The 7th largest wildfire in Arizona’s recorded history, the fire burned 501 km2 prior to containment on July 15, 2019. The fire occurred within the Superstition Wilderness of the Tonto National Forest. The wilderness area extends from the...
Calwood Fire "Heil Ranch" Landslide Monitoring Site near Boulder, CO
Wildfire can radically change a mountainous landscape such that even a modest rainstorm is capable of producing deadly and destructive flash flooding and debris flows.
Calwood Fire "Heil Ranch" near Boulder, CO - Recent Conditions
Recent Monitoring Data
Postfire Landslide Monitoring Station: "Chambers" (2021 Dixie Fire) near Belden, CA
Wildfire can increase landslide susceptibility in mountainous terrain. The USGS maintains postfire landslide monitoring stations to track hillslope hydrologic conditions in the years following fire.
Postfire Landslide Monitoring Station: "Chips" (2021 Dixie Fire) near Belden, CA
Wildfire can increase landslide susceptibility in mountainous terrain. The USGS maintains postfire landslide monitoring stations to track hillslope hydrologic conditions in the years following fire.
"Chambers" - Recent Conditions
Recent Monitoring Data
Barry Arm, Alaska, Tsunami Hazard Maybe Not So Severe
...however, wave height could still be hazardous to Whittier and other nearshore communities in Prince William Sound.
Rainfall-Induced Landslides in Puerto Rico
In September 2017 Hurricane María triggered more than 70,000 landslides across Puerto Rico that caused loss of life and widespread damage to transportation, communication, and power-supply infrastructure, and to other public and private property.
Barry Arm, Alaska Landslide and Tsunami Monitoring
A large steep slope in the Barry Arm fjord 30 miles (50 kilometers) northeast of Whittier, Alaska has the potential to fall into the water and generate a tsunami that could have devastating local effects on those who live, work, and recreate in and around Whittier and in northern Prince William Sound.