2022 Chaos Canyon Landslide in Colorado:
Insights revealed by seismic analysis, field investigations, and remote sensing
Insights revealed by seismic analysis, field investigations, and remote sensing
How long do runoff-generated debris-flow hazards persist after wildfire?
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.
2024 Landslide Grant Proposals
2024 Landslide Grant Proposals
The Application Period for FY2024 Cooperative Landslide Hazard Mapping and Assessment Program External Grants Proposals is now open. Proposals will be accepted through June 17, 2024.
Prince William Sound Landslide Hazards
Prince William Sound Landslide Hazards
This video provides a brief overview of the Prince William Sound landslide hazards project.
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News
From Ashes to Alerts: Science Helps Protect Colorado Travelers
From Ashes to Alerts: Science Helps Protect Colorado Travelers
USGS Seeks Landslide Risk Reduction Proposals
USGS Seeks Landslide Risk Reduction Proposals
Assessing landslide risks in Prince William Sound
Assessing landslide risks in Prince William Sound
Publications
Debris-flow entrainment modelling under climate change: Considering antecedent moisture conditions along the flow path
Debris-flow volumes can increase along their flow path by entraining sediment stored in the channel bed and banks, thus also increasing hazard potential. Theoretical considerations, laboratory experiments and field investigations all indicate that the saturation conditions of the sediment along the flow path can greatly influence the amount of sediment entrained. However, this process is usually n
Assessing locations susceptible to shallow landslide initiation during prolonged intense rainfall in the Lares, Utuado, and Naranjito municipalities of Puerto Rico
Hurricane Maria induced about 70 000 landslides throughout Puerto Rico, USA, including thousands each in three municipalities situated in Puerto Rico's rugged Cordillera Central range. By combining a nonlinear soil-depth model, presumed wettest-case pore pressures, and quasi-three-dimensional (3D) slope-stability analysis, we developed a landslide susceptibility map that has very good performance
Evaluation of debris-flow building damage forecasts
Reliable forecasts of building damage due to debris flows may provide situational awareness and guide land and emergency management decisions. Application of debris-flow runout models to generate such forecasts requires combining hazard intensity predictions with fragility functions that link hazard intensity with building damage. In this study, we evaluated the performance of building damage fore
Science
Improving Postfire Debris-Flow Hazard Assessments In The Pacific Northwest Through Application Of Debris-Flow Models
As part of the Post-fire Hazards and Impacts to Resources and Ecosystems (PHIRE): Support for Response, Recovery, and Mitigation Project, the PHIRE Debris Flow Hazard team is engaging in several studies to better understand the spatial and temporal drivers of postfire debris flows and improve postfire hazard assessments across northern California and the Pacific Northwest.
National Landslide Hazards Maps (NLHM)
Landslides are a prominent natural hazard across the U.S. globally and can result in fatalities as well as costly and disruptive infrastructure damage. To better understand landslide hazards and risk, we need more accurate assessments of landslide potential across the country. The NLHM project aims to improve understanding of landslide occurrence, susceptibility, and frequency to produce accurate...
Landslide Mechanisms and Forecasting
When and where will landslides happen? How far will they go, how big and how fast will they be? These questions are difficult to answer because many factors contribute to landslide occurrence, magnitude, and mobility; some factors remain unknown, while nearly all are very difficult to quantify and account for. Researchers use surface, subsurface, remote sensing, and laboratory observations along...