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Postfire Hydrologic Response Along the Central California Coast

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Barry Arm of Harriman Fjord, Alaska

The U.S. Geological Survey is supporting the monitoring efforts in the Barry Arm fjord in Alaska.

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National Landslide Preparedness Act

enacted January 3, 2021

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Landslide Guide for Puerto Rico

in Spanish and English

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Landslide Science and Preparedness

Learn about landslides and debris flows

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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.

Barry Arm, Alaska Landslide and Tsunami Monitoring

Dixie Fire debris flows

patch of burned conifers in California

This new geonarrative (Esri story map) highlights two storm events and their postfire impacts in the Dixie burn area.

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Postfire debris flow hazards—Tips to keep you safe

tan pickup truck surrounded by mud and rocks up to the top of the door

A new bilingual (English and Spanish) factsheet to help you prepare for a debris flow.

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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

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Publications

Runout model evaluation based on back-calculation of building damage

We evaluated the ability of three debris-flow runout models (RAMMS, FLO2D and D-Claw) to predict the number of damaged buildings in simulations of the 9 January 2019 Montecito, California, debris-flow event. Observations of building damage after the event were combined with OpenStreetMap building footprints to construct a database of all potentially impacted buildings. At the estimated event volum
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Katherine R. Barnhart, Jason W. Kean
By
Natural Hazards Mission Area, Landslide Hazards Program, Geologic Hazards Science Center

Distribution of large boulders on the deposit of the West Salt Creek rock avalanche, western Colorado

On May 25, 2014, a 54.5-million cubic meter rock avalanche in the West Salt Creek valley, Mesa County, Colorado, traveled 4.6 kilometers, leaving a deposit that covers about 2.2 square kilometers. To check the particle-size distribution of the deposit for information about the high mobility of the avalanche, we estimated boulder distribution density for the entire deposit by counting 1-meter (m) o
Authors
Adrian C. Lewis, Rex L. Baum, Jeffrey A. Coe
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Natural Hazards Mission Area, Landslide Hazards Program, Geologic Hazards Science Center

The influence of large woody debris on post-wildfire debris flow sediment storage

Debris flows transport large quantities of water and granular material, such as sediment and wood, and this mixture can have devastating impacts on life and infrastructure. The proportion of large woody debris (LWD) incorporated into debris flows can be enhanced in forested areas recently burned by wildfire, because wood recruitment into channels accelerates in burned forests. In this study, we ex
Authors
Francis K. Rengers, Luke A. McGuire, Katherine R. Barnhart, Ann Youberg, Daniel Cadol, Alexander Gorr, Olivia Joan Andrea Khoury Hoch, Rebecca Beers, Jason W. Kean
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Natural Hazards Mission Area, Landslide Hazards Program, Geologic Hazards Science Center
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Science

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Scientists stand next to completed landslide monitoring station at Yauco, Puerto Rico

Yauco, Puerto Rico Landslide Monitoring Station

The Yauco monitoring station is located in the northern portion of the Yauco municipality, near the Yacuo-Maricao municipalities boundary. Landslide susceptibility is classified as very high at this site, which is underlain by Yauco Mudstone on a very steep slope in a heavily vegetated area.
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Landslide Hazards Program, Landslide Hazards Program, Geologic Hazards Science Center
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Yauco, Puerto Rico Landslide Monitoring Station

The Yauco monitoring station is located in the northern portion of the Yauco municipality, near the Yacuo-Maricao municipalities boundary. Landslide susceptibility is classified as very high at this site, which is underlain by Yauco Mudstone on a very steep slope in a heavily vegetated area.
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photo of completed Ponce landslide monitoring station

Ponce, Puerto Rico Landslide Monitoring Station

The Ponce monitoring station is situated on a moderately steep slope where landslide susceptibility is classified as very high. It is underlain by the Lago Garzas formation in a heavily vegetated area.
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Landslide Hazards Program
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Ponce, Puerto Rico Landslide Monitoring Station

The Ponce monitoring station is situated on a moderately steep slope where landslide susceptibility is classified as very high. It is underlain by the Lago Garzas formation in a heavily vegetated area.
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Four UPR-Mayagüez students stand next to completed Mayagüez monitoring station

Mayagüez, Puerto Rico Landslide Monitoring Station

The Mayagüez station, located on a steep slope north of University of Puerto Rico-Mayagüez, is underlain by the Maricao Formation. Landslide susceptibility is classified as very high.
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Landslide Hazards Program, Geologic Hazards Science Center
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Mayagüez, Puerto Rico Landslide Monitoring Station

The Mayagüez station, located on a steep slope north of University of Puerto Rico-Mayagüez, is underlain by the Maricao Formation. Landslide susceptibility is classified as very high.
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