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Natural Hazards

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Costs and consequences of natural hazards can be enormous; each year more people and infrastructure are at risk. We develop and apply hazards science to help protect U.S. safety, security, and economic well being. These scientific observations, analyses, and research are crucial for the Nation to become more resilient to natural hazards.

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Filter Total Items: 206
Date published: June 8, 2018
Status: Active

Millicoma Meander, Elliott State Forest, Oregon

Recent Conditions

Instruments were installed in late summer 2012 and are used to monitor and detect changes in local conditions, including

Contacts: Rex Baum, Jeffrey Coe, Joel Smith, The Oregon Department of Forestry
Date published: June 8, 2018
Status: Active

Knife Ridge, Elliott State Forest, Oregon

Recent Conditions

The instruments were installed in the summer and fall of 2009 and are used to monitor and detect changes in local conditions, including

Contacts: Jonathan Godt, Rex Baum, The Oregon Department of Forestry, The Elliott State Forest, The Colorado School of Mines
Date published: June 8, 2018
Status: Active

Poplar Cove, Nantahala National Forest, North Carolina

Recent Conditions

The instruments were installed in the summer of 2014 and are used to monitor and detect changes in local conditions, including

Contacts: Jonathan Godt, The North Carolina Department of Environmental Quality, Coweeta Experimental Forest, Colorado School of Mines
Date published: June 7, 2018
Status: Active

Mooney Gap, Coweeta Experimental Forest, North Carolina

Recent Conditions

Instruments were installed in the fall of 2013 and are used to monitor and detect changes in local conditions, including

Contacts: Jonathan Godt, The North Carolina Department of Environmental Quality, The Coweeta Experimental Forest, Colorado School of Mines
Date published: June 7, 2018
Status: Active

Bent Creek Experimental Forest, North Carolina

Recent Conditions

Instruments and are used to monitor and detect changes in local conditions, including

Contacts: Jonathan Godt, The North Carolina Department of Environmental Quality, The United States Forest Service, Colorado School of Mines
Date published: June 7, 2018
Status: Active

Chalk Cliffs, Colorado

Recent Conditions

The instrumentation was installed in the summer of 2008 and includes a series of three monitoring stations located along the main channel. Data from one of these stations (Station 1) is transmitted from the site and displayed here.

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Contacts: Jason Kean, Jeffrey Coe, Joel Smith, University of Colorado, East Carolina University
Date published: June 7, 2018
Status: Active

U.S. Highway 50, California - Current Landslide Status

Status as of April 3, 2018

 

General:

This slide moves in response to elevated ground-water pore pressures caused by infiltration from rainfall or melting snow. It typically moves during a wet winter and spring and is dormant during dry times. Continued downslope movement of this slide will likely occur in future wet seasons.

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Date published: June 7, 2018
Status: Active

U.S. Highway 50, California - Yearly Information

Yearly summaries of past precipitation, movement, and ground water pressures (for the water year beginning October 1). These can be viewed by opening each year's summary graph.

Date published: June 7, 2018
Status: Active

2013 Springs Fire, Ventura County, California

Recent Conditions

A rain gage was installed in November 2015 and is used to monitor

Data is ...

Contacts: Dennis Staley, Jason Kean, National Oceanic and Atmospheric Association
Date published: June 6, 2018
Status: Active

U.S. Highway 50, California - Report

Mark E. Reid, and Richard G. LaHusen, 1998, Real-time Monitoring of Active Landslides Along Highway 50, El Dorado County: adapted from: California Geology, v.51, n.3, p.17-20

Date published: June 6, 2018
Status: Active

U.S. Highway 50, California

Real-time Data

The U.S. Geological Survey, in cooperation with the Eldorado National Forest, has installed monitoring instruments on the Cleveland Corral landslide that has the potential to affect Highway 50. Data from these instruments are used to detect changes in local conditions including

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Contacts: Mark Reid
Date published: June 6, 2018
Status: Active

2009 Station Fire, Dunsmore Canyon, Glendale, California

Recent Conditions

Instruments are used to monitor and detect changes in local conditions, including

Filter Total Items: 105
Date published: June 1, 2017

Coastal Storm Modeling System (CoSMoS)

The Coastal Storm Modeling System (CoSMoS) makes detailed predictions of storm-induced coastal flooding, erosion, and cliff failures over large geographic scales. CoSMoS projections are currently available for the north-central coast (Half Moon Bay to Pt. Arena), San Francisco Bay, and southern California.

Date published: May 26, 2017

Data from Earthquake-Induced Landslide Hazards for a M7.0 Scenario Earthquake on the Hayward Fault

The seismic-landslide probability map covers the counties of Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Santa Cruz, Solano, and Sonoma. The slope failures are triggered by a hypothetical earthquake with a moment magnitude of 7.0 occurring on April 18, 2018, at 4:18 p.m. on the Hayward Fault in the east bay part of California’s San Francisco Bay region.

Attribution: Natural Hazards
Date published: April 18, 2017

Liquefaction potential as a result of HayWired earthquake scenario mainshock (April 18, 2018) shaking in Alameda and Santa Clara Counties, San Francisco Bay area, California

These data are a geospatial representation of liquefaction potential for the HayWired earthquake scenario, a magnitude 7.0 earthquake occurring on the Hayward Fault on April 18, 2018, with an epicenter in the city of Oakland, CA. These data are the product of an analysis that created a detailed liquefaction probability map covering the northern Santa Clara County and western Alameda County...

Attribution: Natural Hazards
Date published: February 23, 2017

Data Viewer—Post-Hurricane Sandy Lidar Elevations and Features

This viewer provides visualization for and accessibility to USGS lidar data obtained following Hurricane Sandy (October 2012). Access and download data and publications that include the source lidar data and the coastal dune and shoreline data needed to examine coastal change and erosion hazards.

Date published: April 18, 2016

Coastal and Marine Geology Video and Photography Portal

This portal contains U.S. Geological Survey (USGS) video and photography of the seafloor off of coastal California and Massachusetts, and aerial imagery of the coastline along segments of the Gulf of Mexico and mid-Atlantic coasts. These data were collected as part of several USGS Coastal and Marine Geology Program Seafloor Mapping projects and Hurricane and Extreme Storm research.

Date published: April 12, 2016

Hurricane Sandy Spatial Data Map

The Hurricane Sandy Spatial Data Mapping Application showcases data and analytical products from Aerial reconnaissance imagery; Environmental Contaminants; and Reproductive success of piper plovers.

Date published: March 17, 2016

Volcano Monitoring Data

Many volcanoes in the U.S. are monitored by arrays of several instruments that detect subtle movements within the earth and changes in gas and water chemistry. The Volcano Hazards Program streams this data to its Volcano Observatories and makes it available on volcano-specific websites.

Date published: March 17, 2016

Coastal and Marine Geoscience Data System

Site provides access to Coastal and Marine Geology Program (CMGP) data via Open Geospatial Consortium (OGC) standards services; serving data to GeoMapApp and Virtual Ocean 2-D and 3-D earth browsing tools, for data integration, visualization and analysis; and metadata catalogs for data discovery.

Date published: March 15, 2016

High-resolution geophysical data collected along the Delmarva Peninsula in 2015, U.S. Geological Survey Field Activity 2015-001-FA

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy in the fall of 2012. The U.S. Geological Survey conducted cruises during the summers of 2014 and 2015 to map the inner continental shelf of the Delmarva Peninsula using geophysical and sampling techniques to define the geologic framework

Date published: March 15, 2016

California State Waters Map Series GIS Data and Metadata

GIS data files for map areas offshore of California are listed with a brief description, a small image, and links to the metadata files and the downloadable data files.

Date published: March 7, 2016

Drought Watch

Where in the Nation are droughts or very low flows occurring now? How can I see these sites on a map and get to the data?

Date published: March 7, 2016

Real-time Streamflow

Map and data of real-time streamflow compared to historical streamflow for the day of the year in the U.S.

Filter Total Items: 3,119
Year Published: 2018

Viscous relaxation as a prerequisite for tectonic resurfacing on Ganymede: Insights from numerical models of lithospheric extension

Ganymede’s bright terrain formed during a near-global resurfacing event (or events) that produced both heavily tectonized and relatively smooth terrains. The mechanism(s) by which resurfacing occurred on Ganymede (e.g., cryovolcanic or tectonic), and the relationship between the older, dark and the younger, bright terrain are fundamental to...

Bland, Michael T.; McKinnon, William B.

Year Published: 2018

6th international conference on Mars polar science and exploration: Conference summary and five top questions

We provide a historical context of the International Conference on Mars Polar Science and Exploration and summarize the proceedings from the 6th iteration of this meeting. In particular, we identify five key Mars polar science questions based primarily on presentations and discussions at the conference and discuss the overlap between some of those...

Smith, Isaac B.; Diniega, Serina; Beaty, David W.; Thorsteinsson, Thorsteinn; Becerra, Patricio; Bramson, Ali; Clifford, Stephen M.; Hvidberg, Christine S.; Portyankina, Ganna; Piqueux, Sylvain; Spiga, Aymeric; Titus, Timothy N.
Isaac B. Smith, Serina Diniega, David W. Beaty, Thorsteinn Thorsteinsson, Patricio Becerra, Ali M. Bramson, Stephen M. Clifford, Christine S. Hvidberg, Ganna Portyankina, Sylvain Piqueux, Aymeric Spiga, Timothy N. Titus, 6th international conference on Mars polar science and exploration: Conference summary and five top questions, In Icarus, 2017, , ISSN 0019-1035, https://doi.org/10.1016/j.icarus.2017.06.027.

Year Published: 2018

Post-wildfire landscape change and erosional processes from repeat terrestrial lidar in a steep headwater catchment, Chiricahua Mountains, Arizona, USA

Flooding and erosion after wildfires present increasing hazard as climate warms, semi-arid lands become drier, population increases, and the urban interface encroaches farther into wildlands. We quantify post-wildfire erosion in a steep, initially unchannelized, 7.5 ha headwater catchment following the 2011 Horseshoe 2 Fire in the Chiricahua...

DeLong, Stephen B.; Youberg, Ann M.; DeLong, Whitney M.; Murphy, Brendan P.
DeLong, Stephen B., Youberg, Ann M., DeLong, Whitney M., Murphy, Brendan P., Post-wildfire landscape change and erosional processes from repeat terrestrial lidar in a steep headwater catchment, Chiricahua Mountains, Arizona, USA, Geomorphology (2017), doi:10.1016/j.geomorph.2017.09.028

Year Published: 2018

The effects of snow and salt on ice table stability in University Valley, Antarctica

The Antarctic Dry Valleys represent a unique environment where it is possible to study dry permafrost overlaying an ice-rich permafrost. In this paper, two opposing mechanisms for ice table stability in University Valley are addressed: i) diffusive recharge via thin seasonal snow deposits and ii) desiccation via salt deposits in the upper soil...

Williams, Kaj; Heldmann, Jennifer L.; McKay, Christopher P.; Mellon, Michael T.
Williams, K., Heldmann, J., Mckay, C., & Mellon, M. (2017). The effects of snow and salt on ice table stability in University Valley, Antarctica. Antarctic Science, 1-12. doi:10.1017/S0954102017000402

Year Published: 2018

Conversion of wet glass to melt at lower seismogenic zone conditions: Implications for pseudotachylyte creep

Coseismic frictional melting and the production of quenched glass called pseudotachylyte is a recurring process during earthquakes. To investigate how glassy materials affect the postseismic strength and stability of faults, obsidian gouges were sheared under dry and wet conditions from 200°C to 300°C at ~150 MPa effective normal stress. Dry...

Proctor, Brooks; Lockner, David A.; Lowenstern, Jacob B.; Beeler, Nicholas M.
Proctor, B.P., Lockner, D.A., Lowenstern, J.B., and Beeler, N.M., 2017, Conversion of wet glass to melt at lower seismogenic zone conditions; implicatins for pseudotachylyte creep: Geophysical Research Letters, v. 44, https://doi.org/10.1002/2017GL075344.

Year Published: 2018

Increasing rock-avalanche size and mobility in Glacier Bay National Park and Preserve, Alaska detected from 1984 to 2016 Landsat imagery

In the USA, climate change is expected to have an adverse impact on slope stability in Alaska. However, to date, there has been limited work done in Alaska to assess if changes in slope stability are occurring. To address this issue, we used 30-m Landsat imagery acquired from 1984 to 2016 to establish an inventory of 24 rock avalanches in a 5000-...

Coe, Jeffrey A.; Bessette-Kirton, Erin; Geertsema, Marten

Year Published: 2018

Shaler: in situ analysis of a fluvial sedimentary deposit on Mars

This paper characterizes the detailed sedimentology of a fluvial sandbody on Mars for the first time, and interprets its depositional processes and palaeoenvironmental setting. Despite numerous orbital observations of fluvial landforms on the surface of Mars, ground-based characterization of the sedimentology of such fluvial deposits has not...

Edgar, Lauren; Gupta, Sanjeev; Rubin, David M.; Lewis, Kevin W.; Kocurek, Gary A.; Anderson, Ryan; Bell, James F. ; Dromart, Gilles; Edgett, Kenneth S.; Grotzinger, John P.; Hardgrove, Craig; Kah, Linda C.; LeVeille, Richard A.; Malin, Michael C.; Mangold, Nicholas; Milliken, Ralph E.; Minitti, Michelle; Palucis, Marisa C.; Rice, Melissa; Rowland, Scott K.; Schieber, Juergen; Stack, Kathryn M.; Sumner, Dawn Y.; Wiens, Roger C.; Williams, Rebecca M.E.; Williams, Amy J.
Edgar, L. A., Gupta, S., Rubin, D. M., Lewis, K. W., Kocurek, G. A., Anderson, R. B., Bell, J. F., Dromart, G., Edgett, K. S., Grotzinger, J. P., Hardgrove, C., Kah, L. C., Leveille, R., Malin, M. C., Mangold, N., Milliken, R. E., Minitti, M., Palucis, M., Rice, M., Rowland, S. K., Schieber, J., Stack, K. M., Sumner, D. Y., Wiens, R. C., Williams, R. M.E. and Williams, A. J. (2017), Shaler: In situ analysis of a fluvial sedimentary deposit on Mars. Sedimentology. Accepted Author Manuscript. doi:10.1111/sed.12370

Year Published: 2018

Slip history of the La Cruz fault: Development of a late Miocene transformin response to increased rift obliquity in the northern Gulf of California

The Gulf of California rift has accommodated oblique divergence of the Pacific and North America plates in north-western México since Miocene time. Due to its infancy, its rifted margins preserve a rare onshore record of early continental break-up processes and an opportunity to investigate the role of rift obliquity in strain localization. We map...

Bennett, Scott E. K.; Oskin, Michael E.; Iriondo, Alexander; Kunk, Michael J.
Bennett, S.E.K., Oskin, M.E., Iriondo, A., and Kunk, M.J., 2016, Slip history of the La Cruz fault: Development of a late Miocene transform in response to increased rift obliquity in the northern Gulf of California: Tectonophysics, v. 693, Part B, p. 409-435, https://doi.org/10.1016/j.tecto.2016.06.013.

Year Published: 2017

Improvements in absolute seismometer sensitivity calibration using local earth gravity measurements

The ability to determine both absolute and relative seismic amplitudes is fundamentally limited by the accuracy and precision with which scientists are able to calibrate seismometer sensitivities and characterize their response. Currently, across the Global Seismic Network (GSN), errors in midband sensitivity exceed 3% at the 95% confidence...

Anthony, Robert E.; Ringler, Adam; Wilson, David
Anthony, R.E., A.T. Ringler, D.C. Wilson (2017), Improvements in Absolute Seismometer Sensitivity Calibration using Local Earth Gravity Measurements, Bulletin of the Seismological Society of America, 108, 503-510. doi:10.1785/0120170218

Year Published: 2017

The HayWired Earthquake Scenario

ForewordThe 1906 Great San Francisco earthquake (magnitude 7.8) and the 1989 Loma Prieta earthquake (magnitude 6.9) each motivated residents of the San Francisco Bay region to build countermeasures to earthquakes into the fabric of the region. Since Loma Prieta, bay-region communities, governments, and utilities have invested tens of billions of...

Detweiler, Shane T.; Wein, Anne M.
Detweiler, S.T., and Wein, A.M., eds., 2017, The HayWired earthquake scenario: U.S. Geological Survey Scientific Investigations Report 2017–5013, https://doi.org/10.3133/sir20175013.

Year Published: 2017

Effects of lava heating on volatile-rich slopes on Io

The upper crust of Io may be very rich in volatile sulfur and SO2. The surface is also highly volcanically active, and slopes may be warmed by radiant heat from the lava. This is particularly the case in paterae, which commonly host volcanic eruptions and long-lived lava lakes. Paterae slopes are highly variable, but some are greater than 70°. I...

Dundas, Colin M.
Dundas, C. M. Effects of lava heating on volatile-rich slopes on Io. J. Geophys. Res. Planets, 122, 546-559, doi:10.1002/2016JE005177.

Year Published: 2017

Granular flows at recurring slope lineae on Mars indicate a limited role for liquid water

Recent liquid water flow on Mars has been proposed based on geomorphological features, such as gullies. Recurring slope lineae — seasonal flows that are darker than their surroundings — are candidate locations for seeping liquid water on Mars today, but their formation mechanism remains unclear. Topographical analysis shows that the terminal...

Dundas, Colin M.; McEwen, Alfred S.; Chojnacki, Matthew; Milazzo, Moses; Byrne, Shane; McElwaine, Jim; Urso, Anna
Dundas, C. M., et al. (2017). Granular flows at Recurring Slope Lineae on Mars indicate a limited role for liquid water. Nature Geosci., 10, 903-907, doi:10.1038/s41561-017-0012-5.

Filter Total Items: 2,293
Annotated photo looking at fissure 8 lava channels and identifying lava flows in residential areas and the ocean entry
July 2, 2018

Kīlauea Volcano — Fissure 8 Channel (Annotated)

Annotated drone image of Kīlauea Volcano's lower East Rift Zone fissure 8 lava channel. Image captured near Kapoho Crater looking east toward the ocean entry. Incandescent flow margin is more easily identified in the dark - specifically here in the area of Kapoho Beach Lots.

Aerial of lava channels
July 2, 2018

Kīlauea Volcano — Open Lava Channels

Fountains from Fissure 8 spatter cone continue to supply lava to the open channel with intermittent small, short-

...
July 1, 2018

Kīlauea Volcano — Whirlwind Above Fissure 8

In the Leilani Estates subdivision, Hawaiian Volcano Observatory field crews monitoring 

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July 1, 2018

Kīlauea Volcano — Collapse/Explosion Event at Halema‘uma‘u

On June 30, 2018, at 02:51 PM HST, a collapse/explosion event occurred at Kīlauea's summit. An ash-poor 

...
June 30, 2018

Understanding Floods | Long-term Streamflow Data Collection (AD)

The USGS is developing methods to improve data collection during floods to gain new insight into the rise and fall of flood waters. In the past, the only data left behind after a flood was how high the water got, or the peak of the flood. This video presents the methodology that hydrologists are using to set up a Continuous Slope-area Reach in remote areas that are

...
June 30, 2018

Understanding Floods | Long-term Streamflow Data Collection

The USGS is developing methods to improve data collection during floods to gain new insight into the rise and fall of flood waters. In the past, the only data left behind after a flood was how high the water got, or the peak of the flood. This video presents the methodology that hydrologists are using to set up a Continuous Slope-area Reach in remote areas that are

...
Lava entering Kapoho Bay area
June 30, 2018

Kīlauea Volcano — Kapoho Coast

At the Kapoho coast, lava enters the ocean along the northern margin of the flow field. 

View of the summit with dust rising from a small rockfall
June 30, 2018

Kīlauea Volcano — Summit Rockfalls

View of Kīlauea Volcano's summit. The brown visible dust coming from Halema‘uma‘u is from rockfalls.

Animation showing changes in summit size on a map
June 30, 2018

Kīlauea Volcano — Animation of Summit Drop

This animated GIF shows a sequence of radar amplitude images that were acquired by the Agenzia Spaziale Italiana CosmoSkyMed satellite system. The images illustrate changes to the 

...
Lava channels coming from a distant fissure
June 30, 2018

Kīlauea Volcano — Lava Channels from Fissure 8

Lava from fissure 8 is fed into a channel that travels about 13 km (8 mi) to the sea. A 

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A geologist stands in a field with a video camera recording a fissure eruption in the distance.
June 30, 2018

Kīlauea Volcano — Video Data of Fissure 8

Hawaiian Volcano Observatory geologist Matt Patrick acquires video of fissure 8 and the lava channel from Pohoiki Road/Highway 132. The video is used to document fountain behavior and lava flow characteristics, and how they change with time.

Ocean entries from lava flows
June 30, 2018

Kīlauea Volcano — Ocean Entry at Kapoho

Lava was entering the ocean over a broad area this morning. This image shows an active entry area along the northern flow front at Kapoho. View to the south.

Filter Total Items: 354
Date published: January 29, 2018

Elementary school students visit USGS office in Santa Cruz

On January 17, 4th and 5th graders from De Laveaga Elementary School visited the USGS Pacific Coastal and Marine Science Center in Santa Cruz, California.

Date published: January 26, 2018

USGS Geologists Join Efforts in Montecito to Assess Debris-Flow Aftermath

Days after fatal debris flows devastated Southern California’s Montecito community,  a team of U.S. Geological Survey geologists joined county, state, and federal partners to survey and  evaluate the aftermath.

 

Date published: January 25, 2018

CMGP Lidar Coordinator participating in National Elevation Assessments and Coordination session at 2018 ASPRS Annual Conference

Xan Fredericks, Lidar Coordinator for the Coastal and Marine Geology Program, will moderate and participate in the National Elevation Assessments and Coordination session at the 2018 American Society for Photogrammetry and Remote Sensing (ASPRS) Annual Conference.

Date published: January 24, 2018

TV interview with NBC Philadelphia about flooding threats to U.S. East Coast

USGS geologist Patrick Barnard gave a live interview to Philadelphia's NBC10 meteorologist Tammie Souza on January 23 during a national weather conference in Lake Tahoe, California.

Date published: January 24, 2018

Alaska Earthquake Rattles Florida’s Groundwater Plumbing

At 12:32 am Alaska time on January 23, 2018, a magnitude 7.9 earthquake shook Alaska residents out of their beds and set off fears of a tsunami all down the West Coast. Fortunately, the tsunami was only a few inches in height, but within an hour of the earthquake in Alaska, waves of a different sort were hitting far away in Florida. 

Date published: January 23, 2018

ShakeAlert: The Path to West Coast Earthquake Early Warning: How a Few Seconds Can Save Lives and Property — Public Lecture

News reporters are invited to attend an illustrated public lecture to learn how U.S. Geological Survey scientists and partners are developing ShakeAlert. The ShakeAlert earthquake early warning system will begin limited operations this year. Alerts could save lives and properties but several challenges remain. With millions at risk, why isn't full public alerting happening yet?

Date published: January 23, 2018

Magnitude 7.9 Earthquake Gulf of Alaska

The USGS has up-to-date details on the January 23, 2018 event.

Date published: January 18, 2018

USGS Scientist Mobilizes with Recon Team to Learn from Mexico's Earthquake Early Warning System

USGS seismologist Elizabeth Cochran studied the performance of Mexico City’s earthquake early warning system,  during devastating Sept. 19, 2017 event

 

Date published: January 17, 2018

USGS scientist explains how king tides provide a glimpse of future sea levels

USGS geologist Patrick Barnard spoke to the public at a “Coffee and King Tides” gathering held in Half Moon Bay, California, on December 4.

Date published: January 17, 2018

USGS coastal-flooding projections inform national defense authorization act

Results of USGS research investigating sea-level rise impacts to Department of Defense (DoD) facilities in Pacific atolls are included in the National Defense Authorization Act for Fiscal Year 2018.

Date published: January 16, 2018

Enthusiastic response to open house at the Pacific Coastal and Marine Science Center in Santa Cruz

USGS scientists at the Pacific Coastal and Marine Science Center in Santa Cruz, California, spoke with an estimated 300 visitors during a December 9 open house.

Date published: January 12, 2018

3-D Structure of Buried Ice Sheets on Mars Revealed by High-Resolution Images

For the first time, high-resolution images show the three-dimensional structure of massive ice deposits on Mars. According to an in-depth analysis led by the USGS, the images reveal never-before-observed details about the ice sheets, including that some begin just a few feet below the Martian surface and extend to depths greater than 300 feet.