Landslide Hazards Program
There are no Current Advisories --
Please See Archives for Past Alerts issued
- Mudslide Causes Headaches For Logan County, Ohio Residents (posted 12/09/2013)
- 4 Die in Brazil Torrential Rains and Mudslides (posted 12/09/2013)
- Seismic Network Detects Landslides on broad Areal Scale American Geophysical Union - From 1999 to 2006, Taiwan’s Chenyoulan watershed experienced 48,000 landslides. Using 14 seismic sensors installed from July to September 2010, researchers used this network in detecting geomorphic activity in the Chenyoulan watershed. (Journal of Geophysical Research--Earth Surface, doi:10.1002/ jgrf.20137, 2013)
- Quake-triggered Landslides Pose Significant Hazard for Seattle, New Study Details Potential Damage A new study suggests the next big quake on the Seattle fault may cause devastating damage from landslides, greater than previously thought and beyond the areas currently defined as prone to landslides. John Vidale of University of Washington and Art Frankel of the U.S. Geological Survey (USGS) are co-authors of the study, which was funded by the USGS.
Landslides constitute a major geologic hazard because they are widespread, occur in all 50 states and U.S. territories, and cause $1-2 billion in damages and more than 25 fatalities on average each year. Expansion of urban and recreational developments into hillside areas leads to more people that are threatened by landslides each year. Landslides commonly occur in connection with other major natural disasters such as earthquakes, volcanoes, wildfires, and floods.
The primary objective of the National Landslide Hazards Program (LHP) is to reduce long-term losses from landslide hazards by improving our understanding of the causes of ground failure and suggesting mitigation strategies.
The LHP has operated since the mid-1970's in gathering information, conducting research, responding to emergencies and disasters, and producing scientific reports and other products for a broadly based user community including geologists and engineers in government, academia and private practice, planners and decision makers from governmental entities at all levels, and the general public.
The results of these efforts have led to significant improvements in understanding the nature and scope of ground-failure problems nationally and worldwide. Such improvements are central to the role of the program, because opportunities remain for fundamental advances in understanding that promise to save lives and dollars.
Potential for rock fall from northern Colorado Front Range canyons remains elevated following September rains
During the week of September 9-13, 2013, nearly continuous rainfall caused widespread landslides and flooding in the northern Colorado Front Range. The US Geological Survey Landslide Hazards Group in Golden, Colorado conducted reconnaissance from the ground and air and determined that affected areas are likely to be susceptible to catastrophic failure during rainstorms and snowmelt for several years. People should be aware of this potential hazard and use caution where traveling in the northern Front Range canyons.
Figure caption: Map showing extent of landslides in the northern Colorado Front Range. Areas burned by wildfire between 2000 and 2012 are shown with fire names and dates.