Landslide Hazards

Rainfall-Induced Landslides

The most frequent and widespread damaging landslides in the U.S. are induced (started) by prolonged or heavy rainfall.  The majority of rainfall-induced landslides are shallow (less than a few meters deep), small, and move rapidly.  Many rainfall-induced landslides transform into debris flows (fast-moving slurries of water, soil, and rock) as they travel down steep slopes, especially those that enter stream channels where they may mix with additional water and sediment. See more on the overview page.

Real-Time Monitoring

Filter Total Items: 4
Date published: September 12, 2020
Status: Completed

Susceptibility to Landslides Triggered by Intense Rainfall, Puerto Rico

Map Depicting Susceptibility to Landslides Triggered by Intense Rainfall, Puerto Rico
by K. Stephen Hughes and William H. Schulz

Puerto Rico is vulnerable to landsliding. This report summarizes creation of a new high-resolution model of rainfall-induced landslide susceptibility for the main island.

Contacts: William Schulz, K. Stephen Hughes
Date published: July 2, 2018
Status: Active

Overview of Rainfall-Induced Landslides

The most frequent and widespread damaging landslides in the U.S. are induced (started) by prolonged or heavy rainfall.  The majority of rainfall-induced landslides are shallow (less than a few meters deep), small, and move rapidly.  Many rainfall-induced landslides transform into debris flows (fast-moving slurries of water, soil, and rock) as they travel down steep slopes, especially those...

Date published: September 1, 2015
Status: Active

Rainfall and Landslides in Northern California

A summary of recent and past landslides and debris flows caused by rainfall in northern California, and links to current shallow landslide monitoring.

Contacts: Brian Collins
Date published: September 1, 2015
Status: Active

Rainfall and Landslides in Southern California

A summary of recent and past landslides and debris flows caused by rainfall in Southern California.