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
Rainfall intensification amplifies exposure of American Southwest to conditions that trigger postfire debris flows
Improving Postfire Debris-Flow Hazard Assessments In The Pacific Northwest Through Application Of Debris-Flow Models
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.
Landslide Basics
Landslide Basics
What is a landslide? Where do they happen and what causes them? Learn all about the basics of landslides here.
U.S. and Puerto Rico Landslide Hazard Map
U.S. and Puerto Rico Landslide Hazard Map
New high-resolution map of landslide susceptibility for the entire U.S. and Puerto Rico.
Quick Links
Quick Links
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News
USGS Seeks Landslide Risk Reduction Proposals (FY25)
USGS Seeks Landslide Risk Reduction Proposals (FY25)
USGS experts responding simultaneously to two major natural hazards
USGS experts responding simultaneously to two major natural hazards
USGS landslide event team activated in wake of Hurricane Helene
USGS landslide event team activated in wake of Hurricane Helene
Publications
Uncertainty reduction for subaerial landslide-tsunami hazards
Subaerial rock slopes may generate a tsunami by rapidly moving into the water. Large uncertainty in landslide characteristics propagates into large uncertainty in tsunami hazard, making hazard assessment more difficult for land and emergency managers. Once a potentially tsunamigenic landslide is identified, it may not be clear which landslide characteristics contribute most significantly...
Using the horizontal-to-vertical spectral ratio method to estimate thickness of the Barry Arm landslide, Prince William Sound, Alaska
Conducting detailed investigations of large landslides is difficult, especially in the subsurface, largely due to environmental factors such as steep slopes, difficult access, and numerous objective hazards. These factors have made it challenging to accurately estimate the depth to the failure surface of the Barry Arm landslide, a large (roughly 108 cubic meters), deep-seated bedrock...
Parsimonious high-resolution landslide susceptibility modeling at continental scales
Landslide susceptibility maps are fundamental tools for risk reduction, but the coarse resolution of current continental-scale models is insufficient for local application. Complex relations between topographic and environmental attributes characterizing landslide susceptibility at local scales are not transferrable across areas without landslide data. Existing maps with multiple...
Science
Postfire Debris-flow Runout
Understanding how far debris flows can travel and what the impacts may be is one of the most important questions we face to effectively protect life and property from debris-flow hazards. Click the publications tab to learn more about debris-flow runout research at the USGS.
Postfire Recovery
Steep and severely burned terrain is susceptible to flash floods and debris flows owing to the loss of hillslope vegetation and damage to the underlying soils. The USGS conducts research to evaluate the recovery of burned areas using field monitoring stations, satellite-based data, and numerical models. This work facilitates the development of USGS hazard assessment products that are geared to...
