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Barry Arm of Harriman Fjord, Alaska

The U.S. Geological Survey is supporting the monitoring efforts in the Barry Arm fjord in Alaska.

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Big Sur, California Landslide

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National Landslide Preparedness Act

enacted January 3, 2021

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Landslide Guide for Puerto Rico

in Spanish and English

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Landslide Science and Preparedness

Learn about landslides and debris flows

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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.

Barry Arm, Alaska Landslide and Tsunami Monitoring

Glenwood Canyon Flooding and Debris Flows

mud covering highway

A new geonarrative (Esri Story Map) summarizes debris flows along and on I-70 in Glenwood Canyon, Colorado, in 2021.

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How Often Do Rainstorms Cause Debris Flows in Burned Areas...

mud, large boulders, and overturned FTE next to house

In the SW U.S., wildfires and intense rainfall are both common occurrences. In burned areas, heavy rain over steep terrain can produce debris flows more so than in unburned areas due to changes in ground surface. How often do these events occur?

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The Monitor newsletter - Vol. 5 | Issue Winter 2022

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First Draft of the SZ4D Implementation Plan

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The Monitor newsletter - Vol. 4 | Issue Fall 2021

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Publications

Geologic controls of slow-moving landslides near the U.S. West Coast

Slow-moving landslides, often with nearly imperceptible creeping motion, are an important landscape shaper and a dangerous natural hazard across the globe, yet their spatial distribution and geologic controls are still poorly known owing to a paucity of detailed, large-area observations. Here, we use interferometry of L-band satellite radar images to reveal 617 spatially large (4 × 104–13 × 106 m2
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Natural Hazards, Landslide Hazards, Geologic Hazards Science Center

Hazard analysis of landslides triggered by Typhoon Chata’an on July 2, 2002, in Chuuk State, Federated States of Micronesia

More than 250 landslides were triggered across the eastern volcanic islands of Chuuk State in the Federated States of Micronesia by torrential rainfall from tropical storm Chata’an on July 2, 2002. Landslides triggered during nearly 20 inches of rainfall in less than 24 hours caused 43 fatalities and the destruction or damage of 231 structures, including homes, schools, community centers, and medi
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Natural Hazards, Landslide Hazards, Geologic Hazards Science Center

Preliminary assessment of the wave generating potential from landslides at Barry Arm, Prince William Sound, Alaska

We simulated the concurrent rapid motion of landslides on an unstable slope at Barry Arm, Alaska. Movement of landslides into the adjacent fjord displaced fjord water and generated a tsunami, which propagated out of Barry Arm. Rather than assuming an initial sea surface height, velocity, and location for the tsunami, we generated the tsunami directly using a model capable of simulating the dynamic
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Natural Hazards, Landslide Hazards, Volcano Hazards, Volcano Science Center, Geologic Hazards Science Center
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Science

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person standing on outcrop, water in background and steep slope beyond that

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.
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Natural Hazards, Landslide Hazards
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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.
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house on slope that is slipping down and falling apart

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.
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Natural Hazards, Landslide Hazards
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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.
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Photo of flowing glacier

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.
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Natural Hazards, Landslide Hazards
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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.
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