Landslide Hazards
Landslide Hazards
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. Explore and search below.
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Sitka, AK - Recent Conditions
Recent Monitoring Data
Monitoring for Subduction Zone Science
Subduction zone monitoring requires monitoring networks that are operated collaboratively for years to decades. Such a sustained activity requires leadership by a Federal agency like the USGS with the support of its partners.
Landslides Triggered by the 2020 Puerto Rico Earthquake Sequence
A magnitude 6.4 earthquake occurred near Barrio Indios, Guayanilla, Puerto Rico on January 7, 2020. A study of the triggered landslides is ongoing.
Preliminary Landslide Assessments
The USGS seeks to provide effective situational awareness about long-term and ongoing hazardous events to improve emergency response, inform the public, and minimize societal disruption. Large, highly mobile landslides generate seismic signals that can be detected by seismic monitoring networks and leave scars and deposits that can be detected from high-resolution remote-sensing imagery. Following...
Sitka, AK
On August 18, 2015, heavy rainfall triggered around 60 landslides in and around the city of Sitka, AK. The landslides moved downslope rapidly; several were damaging and one of these demolished a home on South Kramer Avenue killing three people.
San Francisco Bay Area – SF Peninsula (BALT4) Site near Pacifica, CA
Landslides in the San Francisco Bay area (SFBA) of California impact people, infrastructure, and the environment, and are commonly induced by intense or prolonged rainfall associated with strong winter storms.
San Francisco Bay Area – SF Peninsula (BALT3) Site near Brisbane, CA
Landslides in the San Francisco Bay area (SFBA) of California impact people, infrastructure, and the environment, and are commonly induced by intense or prolonged rainfall associated with strong winter storms.
San Francisco Bay Area – Marin County (BALT2) Site near San Rafael, CA
Landslides in the San Francisco Bay area (SFBA) of California impact people, infrastructure, and the environment, and are commonly induced by intense or prolonged rainfall associated with strong winter storms.
Global Earthquake-Triggered Ground Failure Inventory Database
Earthquake-triggered ground-failure, such as landsliding and liquefaction, can contribute significantly to losses, but our current ability to accurately include them in earthquake hazard analyses is limited.