Landslide Hazards

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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

Glenwood Canyon Flooding and Debris Flows

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

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Rainfall-Induced Landslides in Puerto Rico

Rainfall-Induced Landslides in Puerto Rico

View information about the more than 70,000 landslides that were triggered across Puerto in September 2017 by Hurricane María.

Puerto Rico

News

Date published: November 5, 2021

First Draft of the SZ4D Implementation Plan

Members of the Subduction Zones in 4-Dimensions (SZ4D) initiative are pleased to present to you the first draft of the SZ4D implementation plan.

Date published: September 29, 2021

Opportunity to Provide Feedback for SZ4D Program

To those interested in USGS SZS and the SZ4D Initiative (Subduction Zones in Four Dimensions)...

Publications

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Year Published: 2021

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...

Xu, Yuankun; Schulz, William; Lu, Zhong; Kim, Jinwook; Baxstrom, Kelli Wadsworth

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Year Published: 2021

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,...

Harp, Edwin L.; Reid, Mark E.; Michael, John A.

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Year Published: 2021

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...

Barnhart, Katherine R.; Jones, Ryan P.; George, David L.; Coe, Jeffrey A.; Staley, Dennis M.
Barnhart, K.R., Jones, R.P., George, D.L., Coe, J.A., and Staley, D.M., 2021, Preliminary assessment of the wave generating potential from landslides at Barry Arm, Prince William Sound, Alaska: U.S. Geological Survey Open-File Report 2021–1071, 28 p., https://doi.org/10.3133/ofr20211071.