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.
Northern and Central California Debris Flows-Jan 2021: geonarratives
A new geonarrative (Esri Story Map) summarizes four debris flows in northern and central California locations that were caused by rainstorms in January 2021.
Learn MoreHow Often Do Rainstorms Cause Debris Flows in Burned Areas...
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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Emergency Assessment of Post-Fire Debris-Flow Hazards
Earthquake-Triggered Ground-Failure Inventories
All Research TopicsNews
Potential Landslide-Generated Tsunami in Prince William Sound’s Barry Arm Likely Less Severe than Previously Thought
Wave height could still be hazardous to nearshore communities
USGS Participation in the Annual Natural Hazards Research and Applications Workshop
This year's Annual Natural Hazards Research and Applications Workshop, coordinated by the Natural Hazards Center at CU Boulder on July 11 – 14, 2021, is the 46th and will be organized around the theme of The Hazards and Disaster Workforce: Preparing to Meet 21st Century Challenges. Check out these sessions, posters, and research highlights featuring the USGS Risk Community of Practice members...
The Monitor newsletter - Vol. 3 | Issue Summer 2021
In this issue: ShakeAlert for the West Coast, 2021 hurricane season, Barry Arm, Alaska landslide monitoring, research during COVID-19, and more.
Publications
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.
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.
Numerical analysis of the effect of subgrid variability in a physically based hydrological model on runoff, soil moisture, and slope stability
In coarse resolution hydrological modeling we face the problem of subgrid variability, the effects of which are difficult to express and are often hidden in the parameterization and calibration. We present a numerical experiment with the physically based hydrological model ParFlow‐CLM with which we quantify the effect of subgrid heterogeneities in...
Leonarduzzi, E.; Maxwell, R. M.; Mirus, Benjamin B.; Molnar, P.