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Filter Total Items: 359
Maps of the California maximum tsunami-inundation zone and land-cover data from the 2006 National Land Cover Database
Date Published: March 20, 2018
Status: Active

Tsunamis

The 2004 Indian Ocean, 2010 Chilean, and 2011 Tohoku disasters have shown how tsunamis are significant threats to coastal communities. To help U.S. coastal communities prepare for future tsunamis, the Hazards Vulnerability Team completed projects related to population exposure and sensitivity, pedestrian...

Stream going on rocks
Date Published: March 16, 2018
Status: Active

Chiricahua Mountains - Reduction of Channel Gradients

Drainages in the Chiricahua Mountains are impacted by large rain events that cause gullying effects in the headwaters, overflow at road crossings, flooding of campgrounds, and overwhelming sediment loads at outlets (Chiricahua National Monument). Monsoon rains following recent fires cause severe flooding in most drainages and...

Contacts: Laura M Norman
Babocomari background
Date Published: March 14, 2018
Status: Active

Babocomari - Managed Aquifer Recharge

We are working to investigate the most cost-efficient way to recharge the Sierra Vista sub-basin aquifer using rainwater harvesting in the tributaries of the San Pedro River using low-technology methods. Research is being conducted on the Babacomari Ranch, property of the Brophy family. The ...

Contacts: Laura M Norman
Photograph of gabion dam in Nogales, Sonora
Date Published: March 14, 2018
Status: Active

Aridland Water Harvesting Study

Most of western North America has been severely grazed by cattle, causing grasslands to deteriorate and desert scrub expansion. Climate in arid and semi-arid regions is often typified by short, intense rainfall events which contribute to short-term flooding and erosion. Associated arroyo cutting occurs when ephemeral creek beds are carved into the floodplain when erratic overland flow occurs;...

coastal vulnerability of sea-level rise map
Date Published: January 18, 2018
Status: Active

National Assessment of Coastal Vulnerability to Sea Level Rise

The original national coastal vulnerability index (CVI) assessment was motivated by expected accelerated sea-level rise (SLR) and the uncertainty in the response of the coastline to SLR. This research was conducted between 1999 and 2001, and is currently being updated using new data sources and methodology. This original study was part of the ...

Oblique aerial photograph looking to the southwest along the southern end of Cedar Island, Virginia
Date Published: January 18, 2018
Status: Active

Long-Term Coastal Change

Goals of this task include developing and improving coastal-change assessments and supporting long-term planning and decision making to ensure sustainable coastal economies, infrastructure, and ecosystems.

Cliff erosion is a common storm-induced hazard along the West Coast.
Date Published: January 17, 2018
Status: Active

National Assessment of Coastal Change Hazards

Research to identify areas that are most vulnerable to coastal change hazards including beach and dune erosion, long-term shoreline change, and sea-level rise.

Big Sur landslide on May 20, 2017 showing material across Highway 1.
Date Published: December 7, 2017
Status: Active

The Mud Creek landslide on California’s Big Sur coast

On May 20, 2017, the steep slopes at Mud Creek on California’s Big Sur coast, about 140 miles south of San Francisco, suffered a catastrophic collapse. USGS Scientists from the Pacific Coastal and Marine and the Geology, Minerals, Energy, and Geophysics Science Centers are monitoring this section of the coastline, in collaboration with the California Department of Transportation.

A photo of the Diama Dam on the Senegal River, West Africa
Date Published: October 30, 2017
Status: Active

Ecology of Infectious Diseases

The public is most familiar with parasites' role in spreading infectious diseases to people and domestic animals. In tropical developing countries, malaria, schistosomiasis, and other infectious diseases cause significant human suffering. While most related studies focus on treating patients, Dr. Kevin Lafferty is studying how ecology of the local environment affects transmission of infectious...

Contacts: Kevin Lafferty
WERC Scientist conducting elevation surveys in a salt marsh
Date Published: October 30, 2017
Status: Active

Coastal Ecosystem Response to Sea-level Rise

USGS WERC’s Dr. Karen Thorne, her team of reseachers, and her partners are currently taking a local site network approach to describe current and future conditions and projected responses of coastal ecosystems to sea-level rise and other stressors. The Coastal Ecosystem Response to Climate Change (CERCC) program’s goal is to understand how ecosystems vary in their ability to keep up with sea-...

Contacts: Karen Thorne
Tiny desert tortoise found during a population census
Date Published: October 30, 2017
Status: Active

Desert Tortoise Ecology, Health, Habitat, and Conservation Biology

The desert tortoise is listed as “threatened” under the Endangered Species Act. USGS WERC scientists, along with project partners have been conducting long-term analyses on how changes in the southwestern deserts of the United States can affect desert tortoise populations. Dr. Todd Esque and his team are investigating how habitat disturbances and restoration projects influence tortoise...

Contacts: Todd Esque
WERC Mallard Ducklings
Date Published: October 30, 2017
Status: Active

Breeding and Wintering Ecology of Waterfowl

Western U.S. wetlands provide critical habitat for wintering and breeding waterfowl in California. WERC's Dr. Josh Ackerman is working toward collecting data to understand factors influencing duck nest success, to improve and restore breeding habitat for resident duck populations in California, and understand composition of predator communities. To learn more about how USGS WERC is...

Contacts: Josh T Ackerman
Filter Total Items: 315
USGS
January 1, 2017

Model-derived ocean current velocities (in meters per second) for the given storm condition and sea-level rise (SLR) scenario.
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 Califor

USGS
January 1, 2017

Files contain hydrodynamic and sediment transport data for the location and deployment indicated. Time-series data of water depth, velocity, turbidity, and temperature were collected in San Pablo Bay and China Camp Marsh as part of the San Francisco Bay Marsh Sediment Experiments. Several instruments were deployed in tidal creek, marsh, mudflat, and Bay locations, gathering data on water depth, v

USGS
January 1, 2017

Model-derived ocean current velocities (in meters per second) for the given storm condition and sea-level rise (SLR) scenario.
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 Califor

USGS
January 1, 2017

Geographic extent of projected coastal flooding, low-lying vulnerable areas, and maxium/minimum flood potential (flood uncertainty) associated with the sea-level rise and storm condition indicated.
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

USGS
January 1, 2017

Files contain hydrodynamic and sediment transport data for the location and deployment indicated. Time-series data of water depth, velocity, turbidity, and temperature were collected in San Pablo Bay and China Camp Marsh as part of the San Francisco Bay Marsh Sediment Experiments. Several instruments were deployed in tidal creek, marsh, mudflat, and Bay locations, gathering data on water depth, v

USGS
January 1, 2017

Files contain hydrodynamic and sediment transport data for the location and deployment indicated. Time-series data of water depth, velocity, turbidity, and temperature were collected in San Pablo Bay and China Camp Marsh as part of the San Francisco Bay Marsh Sediment Experiments. Several instruments were deployed in tidal creek, marsh, mudflat, and Bay locations, gathering data on water depth, v

USGS
January 1, 2017

Geographic extent of projected coastal flooding, low-lying vulnerable areas, and maxium/minimum flood potential (flood uncertainty) associated with the sea-level rise and storm condition indicated.
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

USGS
January 1, 2017

As part of the San Francisco Bay Marsh Sediment Experiments and hydrodynamic investigations in San Pablo Bay and China Camp Marsh, California, vegetation sampling measurements were taken over several periods at numerous locations. This portion of the data release presents physical characteristics and percent cover data from vegetation plots sampled in China Camp State Park salt marsh (northern Sa

USGS
January 1, 2017

Model-derived ocean current velocities (in meters per second) for the given storm condition and sea-level rise (SLR) scenario.
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 Califor

USGS
January 1, 2017

Model-derived ocean current velocities (in meters per second) for the given storm condition and sea-level rise (SLR) scenario.
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 Califor

USGS
January 1, 2017

Model-derived total water levels (in meters) for the given storm condition and sea-level rise (SLR) scenario.
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 project

USGS
January 1, 2017

Projected Hazard: Model-derived ocean current velocities (in meters per second) for the given storm condition and sea-level rise (SLR) scenario.
Model Summary: 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.

Filter Total Items: 312
Publication Thumbnail
Year Published: 2000

A seismic landslide susceptibility rating of geologic units based on analysis of characterstics of landslides triggered by the 17 January, 1994 Northridge, California earthquake

One of the most significant effects of the 17 January, 1994 Northridge, California earthquake (M=6.7) was the triggering of thousands of landslides over a broad area. Some of these landslides damaged and destroyed homes and other structures, blocked roads, disrupted pipelines, and caused other serious damage. Analysis of the distribution and...

Parise, M.; Jibson, Randall W.

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Year Published: 1999

Maps Showing Locations of Damaging Landslides Caused by El Nino Rainstorms, Winter Season 1997-98, San Francisco Bay Region, California

Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. Reports of landsliding began in early January 1998 and continued throughout the winter and spring. On February 9, President Clinton declared all 10 counties eligible for...

Godt, Jonathan W.
Maps Showing Locations of Damaging Landslides Caused by El Nino Rainstorms, Winter Season 1997-98, San Francisco Bay Region, California; 1999; MF; 2325; Godt, Jonathan W.

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Year Published: 1999

Map showing locations of damaging landslides in Alameda County, California, resulting from 1997-98 El Nino rainstorms

Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. A team of USGS scientists collected information on landslide locations and damage costs. In Alameda County more than $20 million in damages were assessed. Debris flows occurred...

Coe, J.A.; Godt, J.W.; Brian, Dianne; Houdre, Nicolas
Map showing locations of damaging landslides in Alameda County, California, resulting from 1997-98 El Nino rainstorms; 1999; MF; 2325-B; Coe, J. A.; Godt, J. W.; Brian, Dianne; Houdre, Nicolas

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Year Published: 1999

Map showing locations of damaging landslides in Contra Costa County, California, resulting from 1997-98 El Nino rainstorms

Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. A team of USGS scientists collected information on landslide locations and damage costs. About $27 million in damages were assessed in Contra Costa County.

Graymer, Russell W.; Godt, Jonathan W.
Map showing locations of damaging landslides in Contra Costa County, California, resulting from 1997-98 El Nino rainstorms; 1999; MF; 2325-E; Graymer, Russell W.; Godt, Jonathan W.

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Year Published: 1999

Map showing locations of damaging landslides in Marin County, California, resulting from 1997-98 El Nino rainstorms

Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. A team of USGS scientists collected information on landslide locations and damage costs. About $2.5 million in damages were assessed in Marin County.

Morrissey, Meghan M.; Wieczorek, Gerald F.; Godt, Jonathan W.
Map showing locations of damaging landslides in Marin County, California, resulting from 1997-98 El Nino rainstorms; 1999; MF; 2325-C; Morrissey, Meghan M.; Wieczorek, Gerald F.; Godt, Jonathan W.

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Year Published: 1999

Map showing locations of damaging landslides in Napa County, California, resulting from 1997-98 El Nino rainstorms

Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. A team of USGS scientists collected information on landslide locations and damage costs. Napa County was relatively unaffected in comparison to other counties in the region...

Godt, Jonathan W.; Savage, William Z.; Wilson, Raymond C.
Map showing locations of damaging landslides in Napa County, California, resulting from 1997-98 El Nino rainstorms; 1999; MF; 2325-A; Godt, Jonathan W.; Savage, William Z.; Wilson, Raymond C.

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Year Published: 1999

Map showing locations of damaging landslides in San Francisco City and County, California, resulting from 1997-98 El Nino rainstorms

Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. A team of USGS scientists collected information on landslide locations and damage costs. About $4 million in damages were assessed in San Francisco City and County.

Hillhouse, John W.; Godt, Jonathan W.
Map showing locations of damaging landslides in San Francisco City and County, California, resulting from 1997-98 El Nino rainstorms; 1999; MF; 2325-G; Hillhouse, John W.; Godt, Jonathan W.

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Year Published: 1999

Map showing locations of damaging landslides in San Mateo County, California, resulting from 1997-98 El Nino rainstorms

Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. A team of USGS scientists collected information on landslide locations and damage costs. About $55 million in damages were assessed in San Mateo County. The only fatality...

Jayko, Angela S.; De Mouthe, Jean; Lajoie, Kenneth R.; Ramsey, David W.; Godt, Jonathan W.
Map showing locations of damaging landslides in San Mateo County, California, resulting from 1997-98 El Nino rainstorms; 1999; MF; 2325-H; Jayko, Angela S.; De Mouthe, Jean; Lajoie, Kenneth R.; Ramsey, David W.; Godt, Jonathan W.

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Year Published: 1999

Map showing locations of damaging landslides in Santa Clara County, California, resulting from 1997-98 El Nino rainstorms

Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. A team of USGS scientists collected information on landslide locations and damage costs. About $7.6 million in damages were assessed in Santa Clara County.

Ellis, William L.; Harp, Edwin L.; Arnal, Caroline H.; Godt, Jonathan W.
Map showing locations of damaging landslides in Santa Clara County, California, resulting from 1997-98 El Nino rainstorms; 1999; MF; 2325-J; Ellis, William L.; Harp, Edwin L.; Arnal, Caroline H.; Godt, Jonathan W.

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Year Published: 1999

Map showing locations of damaging landslides in Santa Cruz County, California, resulting from 1997-98 El Nino rainstorms

Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. A team of USGS scientists collected information on landslide locations and damage costs. About $14.5 million in damages were assessed in Santa Cruz County.

Baum, Rex L.; Schuster, Robert L.; Godt, Jonathan W.
Map showing locations of damaging landslides in Santa Cruz County, California, resulting from 1997-98 El Nino rainstorms; 1999; MF; 2325-D; Baum, Rex L.; Schuster, Robert L.; Godt, Jonathan W.

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Year Published: 1999

Map showing locations of damaging landslides in Solano County, California, resulting from 1997-98 El Nino rainstorms

Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. A team of USGS scientists collected information on landslide locations and damage costs. About $13.5 million in damages were assessed in Solano County.

Howell, David G.; Godt, Jonathan W.
Map showing locations of damaging landslides in Solano County, California, resulting from 1997-98 El Nino rainstorms; 1999; MF; 2325-I; Howell, David G.; Godt, Jonathan W.

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Year Published: 1999

Map showing locations of damaging landslides in Sonoma County, California, resulting from 1997-98 El Nino rainstorms

Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. A team of USGS scientists collected information on landslide locations and damage costs. About $21 million in damages were assessed in Sonoma County.

Ramsey, David W.; Godt, Jonathan W.
Map showing locations of damaging landslides in Sonoma County, California, resulting from 1997-98 El Nino rainstorms; 1999; MF; 2325-F; Ramsey, David W.; Godt, Jonathan W.

Filter Total Items: 1,143
A man shows a young girl some reading material he picked up from table, other people stand in background looking at other stuff.
December 9, 2017

Colorful handouts from USGS

Our handouts were very popular with both kids and adults.

A man talks and gestures, to two elderly people looking on a computer screen.
December 9, 2017

Discussing exhibit at open house

Patrick Barnard (left) explained detailed computer forecasts of coastal flooding and erosion driven by climate change.

A woman shows a young child how she uses sediment sieves.
December 9, 2017

Sifting sand with sieves

Research geologist Amy East (left) shows a budding geologist how to sift sand to determine its size during our Open House in Santa Cruz, California.

Two young children sit on top of machines that are not moving, in a yard.
December 9, 2017

Posing for pictures

Posing for pictures on personal watercraft during the USGS Open House in Santa Cruz in December, 2017 was very popular.

A man wearing glasses talks into a microphone while gesturing with his hand.
December 9, 2017

Talking to the news

Open house organizer Rex Sanders explains the wide range of USGS research for a TV interview. Screen capture from KION video.

A young boy sits atop a personal watercraft on the lawn outside a USGS building.
December 9, 2017

Checking out the personal watercraft

A future personal watercraft captain checked out the controls on a beautiful December day in Santa Cruz.

A man on left talks to a news reporter who holds a microphone while he speaks.
December 9, 2017

USGS talks to reporter

KION-TV reporter Ashley Keehn (right) asked PCMSC Director Guy Gelfenbaum about why we held this open house.

A crowd of people stand in a lobby talking in small groups and looking at various exhibits.
December 9, 2017

USGS Santa Cruz open house

Visitors and staff filled our lobby for several hours.

A woman holding a video camera on a tripod aimed at another woman who's pointing at something and talking to a young student
December 9, 2017

TV camera records scene at Open House

Emma Kelsey (right) explained seabird biology to visitors as a TV camera recorded the scene. 

A man and two women crouch around a table with a computer screen that one of the women is pointing to while she talks.
December 9, 2017

Sharing information on the screen

Visitors watched closely as Alicia Balster-Gee (in green vest) presented our research on marine geohazards in Alaska.

person bent over on barren ground over looking a lake and mountains. A jute net covers the foreground.
December 8, 2017

Scientist spreading moss fragments

A USGS scientist spreads moss fragments for a study to test the restoration potential of moss, an important component of biological soil crust. A jute net, foreground, helps stabilize the moss fragments as they adhere to the soil.

Coastal view of landslide area with sand, gravel, cobbles, and large rocks of all sizes on a slope.
December 7, 2017

Upper terrace of Mud Creek slide

Mud Creek slide from south side of north upper terrace (above north and south berms). Note tension cracks and offset on the terrace to the north.

Filter Total Items: 906
Seismicity in the Long Valley Volcanic Region between 2004 and 2014...
October 31, 2014

A cataclysmic eruption of 600 km3 of rhyolite magma (Bishop Tuff) about 760,000 years ago resulted in the collapse of the partially evacuated magma chamber to form the present 17 by 32 km (10 by 20 mi) Long Valley Caldera.

thumbnail image of flyer for Wolf and Elk Diseases in Yellowstone presentation
October 30, 2014

What can wildlife diseases tell us about the emergence of human pandemics? 

Image: Coastal Survey Vessel in Use at Santa Cruz, California
October 20, 2014

During the week of Oct 20 - 24 scientists from the U.S. Geological Survey will be working along the coastline from Santa Cruz to Moss Landing. Either by all-terrain vehicle, personal watercraft, or on foot, they will be surveying local beaches and the nearby ocean bottom to compile a three-dimensional map of how beaches change in northern Monterey Bay.

USGS
October 14, 2014

The Downtown Association of Santa Cruz will host a 25th anniversary commemoration of the Loma Prieta Earthquake.

WERC Sierra Nevadas
October 13, 2014

The USGS California Volcano Observatory (CalVO) is tracking an earthquake swarm in the Sierra Nevada range south of Long Valley Caldera, about 8 miles SW of Toms Place and 15 miles SE of the town of Mammoth Lakes.

Long Valley Caldera Earthquakes greater than M1.0 from 09/22 to 09/...
September 28, 2014

Over the past 42 hours, the earthquake swarm in California's Long Valley Caldera, which began last Friday (see September 26 post), has gradually diminished in terms of numbers of earthquakes and in earthquake magnitude.

Long Valley Caldera Earthquakes greater than M1.0 from 09/22 to 09/...
September 26, 2014

We have been closely tracking an earthquake swarm in California's Long Valley Caldera, which started yesterday at around 4AM PDT (September 25, 2014).

Mount Shasta looming over the town of Weed in the evening....
September 25, 2014

On the afternoon of September 20, a large volume of water surged down Mount Shasta's south flank into Mud Creek, entraining debris and inundating the drainage and roads near McCloud, California.

Image: Sea Otter Ready for a Nap
September 22, 2014

When sea otters want to rest, they wrap a piece of kelp around their body to hold themselves steady among the rolling waves. Likewise, California’s sea otter numbers are holding steady against the many forces pushing against their population recovery, according to the latest field survey led by federal, state, aquarium, and university scientists.

USGS
September 18, 2014

The U.S. Geological Survey will host an educational event for the news media focused on earthquakes on Wednesday September 24, 2014.

Landcover map (left) and pedestrian evacuation time estimate map (right) Ocean Shores, Washington.
September 16, 2014

Scientists at the U.S. Geological Survey have developed a new mapping tool, the Pedestrian Evacuation Analyst, for use by researchers and emergency managers to estimate how long it would take for someone to travel on foot out of a tsunami-hazard zone.

New 2014 US Topo quadrangle of the Three Fingered Jack, Oregon, area
September 15, 2014

Newly released US Topo maps for Oregon now feature segments of the Pacific Crest National Scenic Trail. Several of the 1,835 new US Topo quadrangles for the state now display parts of the Trail along with other improved data layers.