Unified Interior Regions

California

The Southwest Region includes California, Nevada, and Arizona. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

States L2 Landing Page Tabs

Filter Total Items: 421
Date published: August 5, 2017
Status: Active

Hazards Societal Consequences and Risk Communication

The Hazards Societal Consequences and Risk Communication project is led by Anne Wein at the Western Geographic Science Center (WGSC).

The umbrella project is Science Application for Risk Reduction (SAFRR), which estimates consequences of natural hazard disaster scenarios as a strategy to engage decision-makers in increasing a community’s ability to cope with the effects of a disaster....

Date published: June 22, 2017
Status: Active

Land use and tsunami hazards in the Pacific Northwest

Tsunamis have the potential to cause considerable damage to communities along the U.S. Pacific Northwest coastline. As coastal communities expand over time, the potential societal impact of tsunami inundation changes.

To understand how community exposure to tsunami hazards may change in coming decades, we projected future development (i.e. urban, residential, and rural), households, and...

Date published: June 22, 2017
Status: Active

California land-change projections

This dataset consists of modeled projections of land use and land cover and population for the State of California for the period 1970-2101. For the 1970-2001 period, we used the USGS's LUCAS model to "backcast" LULC, beginning with the 2001 initial conditions and ending with 1970. For future projections, the model was initialized in 2001 and run forward on an annual time step to 2100. In...

Date published: June 22, 2017
Status: Active

Land use and carbon modeling in the Sierra Nevada Mountains

The goal of this study was to develop an integrated, regional-scale terrestrial carbon model, which can project changes in ecosystem carbon dynamics resulting from both changing biophysical conditions (e.g. CO2 fertilization, changes in climate) and land-change processes (e.g. urbanization, agricultural intensification, wildfire, harvest).

Our objective was to develop a modeling...

Date published: June 9, 2017
Status: Active

Role Nutrients Play in Fish Death Rates at Rodeo Lagoon

Scientists investigate excessive nutients levels in Rodeo Lagoon that are believed to be cause of dying fish

Date published: June 8, 2017
Status: Active

Delineation of Flood-Inundation Areas in Grapevine Canyon near Scotty’s Castle, Death Valley National Park, California

On October 18, 2015 an intense, nearly stationary, thunderstorm triggered flooding in Grapevine Canyon. Grapevine Canyon Road, power and water infrastructure, and several buildings at Scotty’s Castle were damaged by the flood water, necessitating closure of the area to the public. In response to the flood event, the National Park Service requested the USGS Nevada Water Science Center perform a...

Date published: June 1, 2017
Status: Completed

Back to the Future on the San Andreas Fault

Release Date: JUNE 1, 2017

Investigating Past Earthquakes to Inform the Future

What does the science say? Where does the information come from? And what does it mean? Investigating past earthquakes to inform the future. Maybe you’ve heard that the “Big One is overdue” on the San Andreas Fault. No one can predict earthquakes, so what does the science really say? Where...

Date published: May 26, 2017
Status: Active

Estimating Annual Groundwater Discharge by Evapotranspiration Along the Wild and Scenic Portion of the Amargosa River

The USGS Nevada Water Science Center is refining estimates of annual groundwater discharge along the Wild and Scenic portion of the Amargosa River (AWSR) and adjacent spring discharge areas. Discharge estimates will be based on evapotranspiration (ET) measurements made along the Amargosa River during a 2-year period, previous estimates of evapotranspiration rates, and remote sensing techniques...

Contacts: Michael Pavelko
Date published: April 27, 2017
Status: Completed

Evaluation of Groundwater Flow in the Southern Part of the Amargosa Desert, Nevada and California

Since the original publication of the Death Valley regional groundwater flow system (DVRFS) numerical model in 2004, more information on the regional groundwater flow system in the form of new data and interpretations has been compiled. Cooperators such as the Bureau of Land Management, National Park Service, U.S. Fish and Wildlife Service, the Department of Energy, and Nye County, Nevada,...

Contacts: Wayne Belcher
Date published: April 19, 2017
Status: Active

Epidemiology of Infectious and Other Diseases in Agassiz’s Desert Tortoise

Agassiz’s Desert Tortoise (Gopherus agassizii) was listed as threatened in 1990 under the Endangered Species Act. WERC’s Dr. Kristin Berry leads studies on the cause of diseases in populations of Agassiz’s Desert Tortoise across the Mojave and western Sonoran deserts in southern California.

Contacts: Kristin Berry
Date published: April 13, 2017

Integrated Wildland Fire Science

The size and number of large wildland fires in the western United States have grown dramatically over the past decade, with a contingent rise in damages and suppression costs. This trend will likely continue with further growth of the wildland urban interface (WUI) into fire prone ecosystems, hazardous fuel conditions from decades of fire suppression, and a potentially increasing effect from...

Date published: April 13, 2017
Status: Active

The Pacific Coastal Fog Project

Coastal marine fog is an important meteorological phenomenon for California.  A cloud—either stratus or stratocumulus—is called “fog” when it is low or touching the ground. Marine fog forms as a result of complex interactions between ocean evaporation, aerosols, atmospheric pressure, vertical air layering, onshore-offshore temperature gradients, and coastal mountain topography. The marine...

Filter Total Items: 583
Date published: May 13, 2018

Coastal Storm Modeling System (CoSMoS) for Southern California, v3.0, Phase 2

The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of kilometers) of storm-induced coastal flooding and erosion for both current and future sea-level rise (SLR) scenarios. CoSMoS v3.0 for Southern California shows projections for future climate scenarios (sea-level rise and storms) to provide emergency responders and...

Date published: May 3, 2018

Land Treatment Exploration Tool

The Land Treatment Exploration Tool is designed for resource managers to use when planning land treatments. The tool provides useful summaries of environmental characteristics of planned treatment areas and facilitates adaptive management practices by comparing those characteristics to other similar treatments within a specified distance or area of interest. ...

Date published: April 12, 2018

HayWired aftershock (M> 5) ShakeMaps

The maps in this archive display estimated intensities and ground motions for the earthquake scenarios - events on faults that have ruptured in the past or have a likelihood of rupturing in the future. These maps are typically used for emergency response exercises and planning as well as for understanding the potential consequences of future large earthquakes.

Attribution: Natural Hazards
Date published: April 12, 2018

The HayWired Scenario: An Urban Earthquake in a Connected World - A Geonarrative

What might it be like the next time the Hayward Fault has a large earthquake? A geonarrative and related imagery examines a hypothetical earthquake, the magnitude 7.0 HayWired earthquake scenario.”

Attribution: Natural Hazards
Date published: February 1, 2018

Electron microprobe data for monazite and xenotime used in consideration of gold deposit formation models

The genetic origin of many gold deposits, including Pogo in Alaska, remains controversial with questions as to whether they formed due to magmatic-hydrothermal or metamorphic-hydrothermal fluids. Gaining a better understanding of the formation mechanisms for these deposits is critical for defining proper exploration criteria in gold-bearing regions and production within these deposits. Monaz...

Date published: January 19, 2018

Oblique Aerial Photography Viewer

Obique photos offer a unique perspective of the coast. Features such as beach erosion or accretion, dune erosion and overwash can all be clearly characterized in this imagery. It also documents coastal infrastructure, as well as the damage that infrastructure may incur as the result of an impacting hurricane. 

Date published: January 18, 2018

Reanalysis of Selected Archived NURE-HSSR Sediment and Soil Samples from Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah

Beginning in November of 2015, the U.S. Geological Survey (USGS) undertook a project to reanalyze approximately 60,000 archived sample splits collected as part of the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) project from selected areas in Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah. A s

Date published: January 1, 2018

Water well data used for preliminary regional groundwater salinity mapping near selected oil fields in central and southern California

This digital dataset is comprised of three separate data files that contain total dissolved solids, well construction, and well identifying information for 3,546 water wells used to map salinity in and around 31 southern and central California oil fields. Salinity mapping was done for 27 fields located in the southern San Joaquin Valley of Kern County (North Belridge, South Belridge,

Date published: January 1, 2018

High-Resolution Aeromagnetic Survey of Mountain Pass, California

A detailed aeromagnetic survey of Mountain Pass, California was flown by CGG Canada Services Ltd. (CGG) during November and December, 2016. The high-resolution helicopter survey was flown at a flightline spacing of 100 and 200 m, a flightline azimuthal direction of 70 degrees, a nominal flightline elevation above ground of 70 m, and consists of about 1,814 line-kilometers. Tie l

Date published: January 1, 2018

Study Boundary and Grid Cells for the North and South American, Cosumnes, and Mokelumne River Watersheds Shallow Aquifer Study Unit

The U.S. Geological Survey collected groundwater samples from 67 domestic wells and 1 spring used for domestic supply in Placer, El Dorado, Amador, and Calaveras Counties, California in 2016-2017. The sites were sampled for the Mokelumne, Cosumnes, and American River Watersheds (MCAW) Shallow Aquifer Study Unit of the California State Water Resources Control Board Groundwater Ambi

Date published: January 1, 2018

Magnetotelluric Data from the San Andreas Fault, Parkfield CA, 1990

The U.S. Geological Survey (USGS) Geology, Geophysics and Geochemistry Science Center (GGGSC) collaborated with the USGS Data at Risk (DaR) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Parkfield, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now GGGSC, between 1989 and 1994.

Filter Total Items: 481
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Year Published: 2008

Calculating California seismicity rates

Empirically the rate of earthquakes = magnitude M is well fit by the Gutenberg-Richter relationship, logN=a-bM (1) where N is the number of earthquakes = M over a given time period, a is the number of M = 0 earthquakes over the same period, and b is a parameter that determines the ratio of larger to smaller earthquakes (Ishimoto and Iida 1939;...

Felzer, Karen R.
Calculating California Seismicity Rates; 2008; OFR; 2007-1437-I; Appendix I in The Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2); Felzer, Karen R.

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Year Published: 2008

California fault parameters for the National Seismic Hazard Maps and Working Group on California Earthquake Probabilities 2007

This report describes development of fault parameters for the 2007 update of the National Seismic Hazard Maps and the Working Group on California Earthquake Probabilities (WGCEP, 2007). These reference parameters are contained within a database intended to be a source of values for use by scientists interested in producing either seismic hazard or...

Wills, Chris J.; Weldon, Ray J.; Bryant, W.A.
California Fault Parameters for the National Seismic Hazard Maps and Working Group on California Earthquake Probabilities 2007; 2008; OFR; 2007-1437-A; Appendix A in The Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2); Wills, Chris J.; Weldon, Ray J., II; Bryant, W. A.

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Year Published: 2008

Development of final a-fault rupture models for WGCEP/ NSHMP Earthquake Rate Model 2

This appendix discusses how we compute the magnitude and rate of earthquake ruptures for the seven Type-A faults (Elsinore, Garlock, San Jacinto, S. San Andreas, N. San Andreas, Hayward-Rodgers Creek, and Calaveras) in the WGCEP/NSHMP Earthquake Rate Model 2 (referred to as ERM 2. hereafter). By definition, Type-A faults are those that have...

Field, Edward H.; Weldon, Ray J.; Parsons, Thomas; Wills, Chris J.; Dawson, Timothy E.; Stein, Ross S.; Petersen, Mark D.
Development of Final A-Fault Rupture Models for WGCEP/ NSHMP Earthquake Rate Model 2; 2008; OFR; 2007-1437-G; Appendix G in The Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2); Field, Edward H.; Weldon, Ray J., II; Parsons, Thomas; Wills, Chris J.; Dawson, Timothy E.; Stein, Ross S.; Petersen, Mark D.

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Year Published: 2008

Earthquake Rate Model 2 of the 2007 working group for California earthquake probabilities, magnitude-area relationships

The Working Group for California Earthquake Probabilities must transform fault lengths and their slip rates into earthquake moment-magnitudes. First, the down-dip coseismic fault dimension, W, must be inferred. We have chosen the Nazareth and Hauksson (2004) method, which uses the depth above which 99% of the background seismicity occurs to assign...

Stein, Ross S.
Earthquake Rate Model 2 of the 2007 Working Group for California Earthquake Probabilities, Magnitude-Area Relationships; 2008; OFR; 2007-1437-D; Appendix D in The Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2); Stein, Ross S.

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Year Published: 2008

Monte Carlo method for determining earthquake recurrence parameters from short paleoseismic catalogs: Example calculations for California

Paleoearthquake observations often lack enough events at a given site to directly define a probability density function (PDF) for earthquake recurrence. Sites with fewer than 10-15 intervals do not provide enough information to reliably determine the shape of the PDF using standard maximum-likelihood techniques [e.g., Ellsworth et al., 1999]. In...

Parsons, Tom
Monte Carlo Method for Determining Earthquake Recurrence Parameters from Short Paleoseismic Catalogs: Example Calculations for California; 2008; OFR; 2007-1437-C; Appendix C in The Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2); Parsons, Tom

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Year Published: 2008

Overview of the Southern San Andreas Fault Model

This appendix summarizes the data and methodology used to generate the source model for the southern San Andreas fault. It is organized into three sections, 1) a section by section review of the geological data in the format of past Working Groups, 2) an overview of the rupture model, and 3) a manuscript by Biasi and Weldon (in review Bulletin of...

Weldon, Ray J.; Biasi, Glenn P.; Wills, Chris J.; Dawson, Timothy E.
Overview of the Southern San Andreas Fault Model; 2008; OFR; 2007-1437-E; Appendix E in The Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2); Weldon, Ray J., II; Biasi, Glenn P.; Wills, Chris J.; Dawson, Timothy E.

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Year Published: 2008

Summary of geologic data and development of A Priori Rupture Models for the Elsinore, San Jacinto, and Garlock faults

This appendix to the WGCEP Earthquake Rate Model 2 summarizes geologic data and documents the development of the rupture models for the Elsinore, San Jacinto, and Garlock faults. For the summary of available geologic data, the documentation is organized by fault and fault segment and includes a summary of slip rates, event timing and recurrence,...

Dawson, Timothy E.; Rockwell, Tom K.; Weldon, Ray J.; Wills, Chris J.
Summary of Geologic Data and Development of A Priori Rupture Models for the Elsinore, San Jacinto, and Garlock Faults; 2008; OFR; 2007-1437-F; Appendix F in The Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2); Dawson, Timothy E.; Rockwell, Tom K.; Weldon, Ray J., II; Wills, Chris J.

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Year Published: 2008

WGCEP historical California earthquake catalog

This appendix provides an earthquake catalog for California and the surrounding area. Our goal is to provide a listing for all known M > 5.5 earthquakes that occurred from 1850-1932 and all known M > 4.0 earthquakes that occurred from 1932-2006 within the region of 31.0 to 43.0 degrees North and -126.0 to -114.0 degrees West. Some pre-1932...

Felzer, Karen R.; Cao, Tianqing
WGCEP Historical California Earthquake Catalog; 2008; OFR; 2007-1437-H; Appendix H in The Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2); Felzer, Karen R.; Cao, Tianqing

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Year Published: 2008

Modified Mercalli Intensity Maps for the 1868 Hayward Earthquake Plotted in ShakeMap Format

To construct the Modified Mercalli Intensity (MMI) ShakeMap for the 1868 Hayward earthquake, we started with two sets of damage descriptions and felt reports. The first set of 100 sites was compiled by A.A. Bullock in the Lawson (1908) report on the 1906 San Francisco earthquake. The second set of 45 sites was compiled by Toppozada et al. (1981)...

Boatwright, John; Bundock, Howard
Modified Mercalli Intensity Maps for the 1868 Hayward Earthquake Plotted in ShakeMap Format; 2008; OFR; 2008-1121; Boatwright, John; Bundock, Howard

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Year Published: 2008

Forecasting California's earthquakes: What can we expect in the next 30 years?

In a new comprehensive study, scientists have determined that the chance of having one or more magnitude 6.7 or larger earthquakes in the California area over the next 30 years is greater than 99%. Such quakes can be deadly, as shown by the 1989 magnitude 6.9 Loma Prieta and the 1994 magnitude 6.7 Northridge earthquakes. The likelihood of at least...

Field, Edward H.; Milner, Kevin R.
Forecasting California's Earthquakes - What Can We Expect in the Next 30 Years?; 2008; FS; 2008-3027; Field, Edward H.; Milner, Kevin R.; The 2007 Working Group on California Earthquake Probabilities

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Year Published: 2008

The Hayward Fault - Is it due for a repeat of the powerful 1868 earthquake?

On October 21, 1868, a magnitude 6.8 earthquake struck the San Francisco Bay region. Although the region was then sparsely populated, this quake on the Hayward Fault was one of the most destructive in California?s history. Recent studies show that such powerful Hayward Fault quakes have repeatedly jolted the region in the past. U.S. Geological...

Brocher, Thomas M.; Boatwright, Jack; Lienkaemper, James J.; Prentice, Carol S.; Schwartz, David P.; Bundock, Howard
The Hayward Fault - Is It Due for a Repeat of the Powerful 1868 Earthquake?; 2008; FS; 2008-3019; Brocher, Thomas M.; Boatwright, Jack; Lienkaemper, James J.; Prentice, Carol S.; Schwartz, David P.; Bundock, Howard

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Year Published: 2008

The Uniform California Earthquake Rupture Forecast, version 2 (UCERF 2)

California?s 35 million people live among some of the most active earthquake faults in the United States. Public safety demands credible assessments of the earthquake hazard to maintain appropriate building codes for safe construction and earthquake insurance for loss protection. Seismic hazard analysis begins with an earthquake rupture forecast?a...

The Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2); 2008; OFR; 2007-1437; 2007 Working Group on California Earthquake Probabilities

Filter Total Items: 1,116
Approximate location of maximum subsidence in the U.S. Signs show approximate altitude of land surface in 1925, 1955, and 1977.
March 8, 2018

Location of maximum land subsidence in U.S. Levels at 1925 and 1977.

Land subsidence in California - Approximate location of maximum subsidence in the United States identified by research efforts of Dr. Joseph F. Poland (pictured). Signs on pole show approximate altitude of land surface in 1925, 1955, and 1977. The site is in the San Joaquin Valley southwest of Mendota, California.

This photo shows the approximate location of maximum

...
Southern Sea Otters Floating in Morro Bay, CA
March 6, 2018

Southern Sea Otters Floating in Morro Bay, CA

Southern sea otters (Enhydra lutris nereis) float in Morro Bay, CA.

Adjustment of tension in infiltrometer to measure post-fire recovery.
March 1, 2018

Research Geologist Jonathan Perkins measuring post-fire infiltration

Research Geologist Jonathan Perkins adjusting tension in infiltrometer to evaluate post-fire recovery conditions in the Pepperwood Preserve, Santa Rosa, CA following the October 2017 Tubbs Fire to better understand how landscapes heal after wildfire. 

February 22, 2018

PubTalk 2/2018 — USGS Cascades Volcano Observatory

Title: The USGS Cascades Volcano Observatory - Research, monitoring, and the science of preparing society for low-probability, high-consequence events

  • Volcanoes in the Cascade Range erupt twice per century on average, with eruptions often lasting for years.
  • Although eruptions are generally not as high-consequence as large earthquakes, they are still
Attribution: Natural Hazards
Oil with a taffy-like consistency in a natural seep along a small creek, being poked with a stick to show its gooey nature.
February 19, 2018

Natural oil seep along Tarwater Creek, San Mateo County, California

The natural oil seep in this photo is located in Pescadero Creek County Park, where the Canyon Trail crosses Tarwater Creek. The oil is black, has a taffy-like consistency, and smells like motor oil.

February 16, 2018

Scientific Innovation Helps Pacific Wetlands Adapt to Sea Level Rise

U.S. Geological Survey scientists collaborated with partners to develop an innovative new tool to help resource managers prepare Pacific coastal wetlands for rising sea levels. 
 

February 13, 2018

Dr. Rufus Catchings, USGS Geophysicist

USGS geophysicist Dr. Rufus Catchings, brings insights to the importance of diversity and perseverance in the earth science field. 
 

Attribution: Natural Hazards
marsh
February 13, 2018

Egret Flyover, Petaluma River

While heading out to a survey plot off of San Pablo Bay, an egret flies over the Petaluma River in the early morning.

Female northern harrier gaze
February 9, 2018

Female Northern Harrier (Circus cyaneus) Gaze

A female northern harrier (Circus cyaneus) gazes into the camera at Suisun Marsh, CA.

In a pasture a white horse is standing in the foreground, in background is an apparatus that pumps oil from the ground.
February 2, 2018

Oil well pumping unit, Half Moon Bay oil field, California

The Half Moon Bay oil field is one of the oldest oil fields in California and was first developed during the 1880s. Since then, the field has produced an estimated 60,000 barrels of oil from about 19 wells. Most of the old wells have been plugged and abandoned, but this well was reworked in 1980 and produces small volumes of oil from thin sandstone layers of the Miocene

...
January 29, 2018

USGS Joins Efforts in Montecito to Assess Debris-Flow Aftermath

A team of USGS geologists provide science support following Montecito post-fire debris-flow event.
 

January 25, 2018

PubTalk 1/2018 — ShakeAlert: Path to West Coast EQ Early Warning

Title: ShakeAlert: The Path to West Coast Earthquake Early Warning ... how a few seconds can save lives and property

  • 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?
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USGS
September 3, 2014

Members of the news media are invited to attend a scientific briefing at the U.S. Geological Survey to summarize what has been learned about and from the August 24 magnitude 6 South Napa Earthquake

collage of scientists conducting science related to each mission are
August 25, 2014

Yesterday at 3:20 AM local time, the northern San Francisco Bay Area was struck by the largest earthquake to impact the Bay Area since the 1989 M6.9 Loma Prieta earthquake.

Thumbnail of report cover for water withdrawal by category in california
August 20, 2014

About 38 billion gallons per day (42,000,000 acre-feet per year) of water were withdrawn from groundwater and surface-water sources in California in 2010, according to a new U.S. Geological Survey dataset.

Map showing outline of Cuyama Valley groundwater basin and sub-basins.
August 14, 2014

Groundwater is the sole source for agricultural, domestic and municipal water use in California’s Cuyama Valley, located primarily in Santa Barbara County.

Volcanic-gas "sniffer" installed at Mammoth Mountain, California me...
August 12, 2014

In July 2014, USGS Scientists Peter Kelly (Cascades Volcano Observatory) and Stuart Wilkinson (California Volcano Observatory) installed an automated volcanic-gas monitoring station on Mammoth Mountain, located on the SW rim of Long Valley Caldera (CA).

Public lecture flyer for The Ecological Value of Coastal Fog
July 29, 2014

Fog is more than just nature’s air conditioning keeping Bay Area residents cool while others in California bake in the summer’s heat; it is also extremely valuable for the local economy for everything from wine production to tourism.

CalVO geologist Mae Marcaida examines thin layers of volcanic ash s...
July 3, 2014

CalVO geologist Mae Marcaida examines thin layers of volcanic ash sandwiched between thick beds of sediment deposited by ancestral Mono Lake in eastern California.

Mammoth Lakes Basin including the treekill area next to Horseshoe L...
June 27, 2014

A swarm of small earthquakes (magnitudes less than 2) occurred at a depth of 6-7 km (about 4 miles) beneath Highway 203 in Mammoth Lakes, California midway between the water treatment plant and the Highway 395-203 junction, June 27, 2014.

June 2014 flyer
June 24, 2014

June is recognized as National Oceans Month in the United States. Join USGS Oceanographer Dr. Nancy Prouty to hear about scientific studies of deep-sea corals that show how these long-living creatures provide our oceans with a healthy ecosystem.

USGS science for a changing world logo
June 10, 2014

While most of the Coachella Valley was relatively stable, land surfaces declined about nine inches to two feet in some areas of Palm Desert, Indian Wells, and La Quinta, between 1995 and 2010.

USGS science for a changing world logo
June 10, 2014

While most of the Coachella Valley was relatively stable, land surfaces declined about nine inches to two feet in some areas of Palm Desert, Indian Wells, and La Quinta, between 1995 and 2010.

Flyer for May presentation
May 28, 2014

Can better understanding fish diseases help to create much sought-after cures for human diseases such as Hepatitis C?