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Landslide Hazards Program

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.

News

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Post-fire Hydrologic Response Along the Central California Coast

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The Monitor Newsletter - Vol. 12 | Issue July 2023 - Vol. 12 | Issue July 2023

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The Monitor Newsletter - Vol. 11 | Issue May 2023

Publications

Kinematic evolution of a large paraglacial landslide in the Barry Arm fjord of Alaska

Our warming climate is adversely affecting cryospheric landscapes via glacial retreat, permafrost degradation, and associated slope destabilization. In Prince William Sound, Alaska, the rapid retreat of Barry Glacier has destabilized the slopes flanking the glacier, resulting in numerous landslides. The largest of these landslides (∼500 Mm3 in volume) is more than 2 km wide and has the potential t
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Lauren N. Schaefer, Jeffrey A. Coe, Katreen Wikstrom Jones, Brian D. Collins, Dennis M. Staley, Michael E. West, Ezgi Karasozen, Charles Prentice-James Miles, Gabriel J. Wolken, Ronald P. Daanan, Kelli Wadsworth Baxstrom

Landslide initiation thresholds in data-sparse regions: Application to landslide early warning criteria in Sitka, Alaska, USA

Probabilistic models to inform landslide early warning systems often rely on rainfall totals observed during past events with landslides. However, these models are generally developed for broad regions using large catalogs, with dozens, hundreds, or even thousands of landslide occurrences. This study evaluates strategies for training landslide forecasting models with a scanty record of landslide-t
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Annette Patton, Lisa Luna, Josh J. Roering, Aaron Jacobs, Oliver Korup, Benjamin B. Mirus

How long do runoff-generated debris-flow hazards persist after wildfire?

Runoff-generated debris flows are a potentially destructive and deadly response to wildfire until sufficient vegetation and soil-hydraulic recovery have reduced susceptibility to the hazard. Elevated debris-flow susceptibility may persist for several years, but the controls on the timespan of the susceptible period are poorly understood. To evaluate the connection between vegetation recovery and d
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Andrew Paul Graber, Matthew A. Thomas, Jason W. Kean

Science

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Las Lomas Landslide Monitoring Station - Recent Conditions

Recent Monitoring Data
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Postfire Landslide Monitoring Station: “Las Lomas” (2016 Fish Fire) near Duarte, California

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.
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Postfire Landslide Monitoring Station: “Las Lomas” (2016 Fish Fire) near Duarte, California

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.
Learn More

Añasco, Puerto Rico Landslide Monitoring Station

The Añasco monitoring station is located in the eastern part of the coastal Añasco municipality. The station is located in a highly vegetated area underlain by the Lago Garzas Formation. A fence was built around the enclosure to deter grazing cows on the hillslope.
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Añasco, Puerto Rico Landslide Monitoring Station

The Añasco monitoring station is located in the eastern part of the coastal Añasco municipality. The station is located in a highly vegetated area underlain by the Lago Garzas Formation. A fence was built around the enclosure to deter grazing cows on the hillslope.
Learn More