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Filter Total Items: 365
Image of the contents of a repeat photo stake folder.
Date Published: March 3, 2016
Status: Completed

Developing a USGS Legacy Data Inventory to Preserve and Release Historical USGS Data

Legacy data (n) - Information stored in an old or obsolete format or computer system that is, therefore, difficult to access or process. (Business Dictionary, 2016) For over 135 years, the U.S. Geological Survey has collected diverse information about the natural world and how it interacts with society. Much of this legacy information is one-of-a-kind and in danger of being lost forever...

California Volcano Observatory emblem
Date Published: March 2, 2016

USGS California Volcano Observatory (CalVO)

CalVO operates real-time volcano monitoring networks, disseminates forecasts and notifications of significant activity, assesses volcano hazards, researches volcano processes, and works with communities to prepare for volcanic eruptions in California and Nevada. The Observatory is located at USGS offices in Menlo Park, California.

The general study area
Date Published: December 23, 2015
Status: Active

Estimating Natural Flows for Hydrologic Reference Streams

Scientists develop metrics of expected hydrological conditions at ungaged sites throughout Callifornia 

Temporary seismometer array in New York City to record ambient noise.
Date Published: May 1, 2015
Status: Completed

Seismology in the City

Release Date: May 1, 2015

How seismologists can use noise to see under the ground.

Contacts: William J Stephenson, Lisa A Wald, Steve Hartzell, Morgan Moschetti, Jack Odum, Robert Williams, David Worley
Fish sampling sites in the San Joaquin River
Date Published: February 23, 2015
Status: Active

Application of the SmeltCam to Describe Processes Influencing Delta Smelt Distribution and Movements

The California Water Science Center's "SmeltCam" helps describe processes influencing Delta Smelt distribution and movement.

Tule Perch
Date Published: January 1, 2015
Status: Active

Understanding Influences on Habitat Quality for Delta Smelt and Other Imperiled Fish Populations

USGS scientists work to provide information needed to evaluate the efficacy of ongoing U.S. Burueau of Reclamation water management efforts in Bay-Delta.

Informational graphic showing data in pie graphs, text, and maps
Date Published: August 4, 2014
Status: Completed

California Water Use, 2010

In 2010, Californians withdrew an estimated total of 38 billion gallons of water per day, compared with 46 billion gallons per day in 2005.

Contacts: Justin Brandt
Longfin Smelt
Date Published: May 15, 2014
Status: Active

Physical and Biological Drivers of Longfin Smelt Vertical Distribution

Research scientists study conditions that affect abundance and distributions Longfin Smelt fish population.

Map of Christ Church, NZ aftershocks
Date Published: April 19, 2014
Status: Active

Aftershock Forecast Communication for Risk Reduction

Studies of the communication of aftershock information during the Canterbury, New Zealand earthquake sequence conducted by Hazards Societal Consequences and Risk Communication team members and collaborators in New Zealand are...

Tsunami Scenario
Date Published: September 4, 2013

Tsunami Scenario

The SAFRR Tsunami Scenario is a hypothetical but plausible tsunami created by a magnitude 9.1 earthquake offshore of the Alaskan peninsula. The scenario report was released September 2013 and provides an analysis of the potential impacts along the California coast, intended for those who need to make mitigation, preparedness, and outreach decisions before and after tsunami impacts.

Tsunami Scenario Wave Height
Date Published: September 4, 2013
Status: Completed

SAFRR Tsunami Scenario

The third SAFRR scenario is initiated by a magnitude 9.0 megathrust earthquake in the eastern Aleutian Islands, an event presenting a hypothetical but plausible distant-tsunami threat to southern and central California. USGS and other federal and state agencies entities developed the SAFRR Tsunami Scenario. The scenario describes wave heights, current velocities and inundation for the coast of...

Filter Total Items: 350
USGS
January 1, 2016

This dataset includes swell-filtered, high-resolution seismic-reflection data jointly collected by the U.S. Geological Survey (USGS) and Oregon State University in 2010, between Shelter Cove and Fort Bragg in northern California.

USGS
January 1, 2016

Bathymetric data were collected by the U.S. Geological Survey (USGS) in 2015 for Little Holland Tract in the Sacramento-San Joaquin River Delta, California. The data were collected using a personal watercraft (PWC) platform that consisted of Trimble R7 Global Navigation Satellite System (GNSS) receivers with Zephyr 2 antennas, combined with Odom Echotrac CV-100 single-beam echosou

USGS
January 1, 2015

This Data Release contains GIS data generated by USGS for use in a BOEM funded project to compare natural rockfish nursery habitat to habitat created by manmade structures in the eastern Santa Barbara Channel. The contours were created from published Data Elevation Models of Carignan and others (2009) and Dartnell and others (2012). Contours were generated using the ESRI Contour tool in s

Water-supply basins in California that drain to the SF Bay Delta
February 26, 2014

Soil water deficit was calculated from soil moisture storage simulated for Jan. 1, 2014 for 23 water-supply basins surrounding the California Central Valley that drain to the Bay-Delta by using the monthly California Basin Characterization Model and ArcGIS. 

Icon made to look like a zipper on piece of paper is being unzipped, with the word ZIP at the bottom of the paper.
January 1, 2014

ZIP file (3.6 MB) contains three files when uncompressed: 

  • an essential readme.txt file and
  • model projections of two Southern California flooding hazard scenarios:
     - ARkStorm, and
     - January 2010 El Niño and Sea-Level Rise.

For more information, see CoSMoS 1.0: Southern California

 Screen Shot of the Land Treatment Digital Library Home Page
November 23, 2013

The Land Treatment Digital Library (LTDL) was created by the USGS to catalog legacy land treatment information on Bureau of Land Management lands in the western United States. The LTDL can be used by federal managers and scientists for compiling information for data-calls, producing maps, generating reports, and conducting analyses at varying spatial and temporal scales.

Animation shows map of land and sea, land doesn't change and the ocean and bay change colors according to tidal height.
October 2, 2013

This web page provides a link to files that may be used to run a basic depth-averaged (2DH) Deltares Delft3D version 4.00.01 astronomic tide model for San Francisco Bay. These files are provided ‘as is’ with the aim of promoting scientific advancement in the understanding of San Francisco Bay processes.

Land Treatment Digital Library version 6, application splash screen
July 24, 2013

This software allows agencies, organizations, and individuals to download an empty, stand-alone Land Treatment Digital Library database to individual or networked computers. Data entered in these databases may be submitted to the USGS for possible inclusion in the online Land Treatment Digital Library (https://ltdl.wr.usgs.gov).

Screen shot of the NSDI node for SIR 2010-5193
September 20, 2011

This dataset was created in support of a USGS study focusing on groundwater resources in the Great Basin carbonate and alluvial aquifer system (GBCAAS). The GBCAAS is a complex aquifer system comprised of both unconsolidated and bedrock formations covering an area of approximately 110,000 square miles. The aquifer system is situated in the eastern portion of the Great Basin Province.

Screen shot of the NSDI node for SIR 2010-5193
September 20, 2011

This dataset consists of potentiometric contours, control points used to guide the creation of the contours, and a grid of 2 square-mile cells used to average the water-level value of selected control points. Control points are based on water-level measurements at well and spring locations from the USGS National Water Information System (NWIS).

Screen shot of NSDI node for SIR 2010-5193
September 20, 2011

This dataset was created in support of a study focusing on groundwater resources in the Great Basin carbonate and alluvial aquifer system (GBCAAS). The GBCAAS is a complex aquifer system comprised of both unconsolidated and bedrock formations covering an area of approximately 110,000 square miles. The aquifer system is situated in the eastern portion of the Great Basin Province of the western US.

Screen shot of the NSDI node for SIR 2010-5193
September 20, 2011

This dataset was created in support of a study focusing on groundwater resources in the Great Basin carbonate and alluvial aquifer system (GBCAAS). The GBCAAS is a complex aquifer system comprised of both unconsolidated and bedrock formations covering an area of approximately 110,000 square miles. The aquifer system is situated in the eastern portion of the Great Basin Province of the western US.

Filter Total Items: 1,158
long stretch of beach, with row of houses teetering on the edge of the cliff above beach. Bare rocks exposed & no sand on beach
February 28, 2017

Exposed bedrock at Isla Vista beach

Bedrock exposed at low tide along the beach at Isla Vista, California

house perched at the top of cliff edge above beach.
February 28, 2017

Exposed bedrock at Isla Vista

Exposed bedrock on the beach during very low (negative) tide at Isla Vista, California

Map showing depth of a very intricate bay and delta system color-coded to enhance central bay channels and tidal channels.
February 27, 2017

San Francisco Bay and Delta DEM

High-resolution (10-meter per pixel) digital elevation model (DEM) of the Sacramento-San Joaquin Delta, using both bathymetry and topography data relative to current modern datum of North American Vertical Datum of 1988 (NAVD88). This DEM is the result of collaborative efforts of the U.S. Geological Survey (USGS) and the California Department of Water Resources (DWR).

January 31, 2017

What's Drifting Beneath Kauai's Ocean?

Residents and visitors both revel in Kauai’s lush landscape, and beneath its seascape. However, it’s underwater where things don’t look so healthy. Scientists from the U.S. Geological Survey put together a detailed picture of the physical environment of the coral reefs at Makua Beach. Understanding just what these reefs are exposed to and for how long, may help explain why

...
two men standing in a boat tied up to a dock
January 31, 2017

Readying a sonar-equipped boat for mapping

USGS scientists readying a sonar-equipped boat to map the ocean bottom near Santa Cruz, Calif.

person standing up riding a personal watercraft across small ocean swells, with buildings and a long pier in the background
January 31, 2017

Sonar-equipped personal watercraft mapping bathymetry.

A sonar-equipped personal watercraft mapping the bathymetry underwater near Santa Cruz, Calif.

man walking along wet sand on beach wearing a backpack with an antenna sticking pout of it
January 31, 2017

Mapping the beach with a GPS-equipped backpack unit.

USGS scientist Daniel Hoover mapping the beach at Santa Cruz with a GPS-equipped backpack unit.

two young men standing on a pier with a large tripod, looking down at camera, and holding equipment.
January 31, 2017

Setting up a lidar scanner to map the beach.

 USGS scientists setting up a lidar scanner on the pier to map the beach near Capitola, California.

January 31, 2017

Hatching an Engineer

What does it take to become an ocean engineer? Here is the path that USGS Gerry Hatcher took.
 

USGS scientist standing with a pole annotated with land-surface elevation marks at given years at bench mark H 1235 RESET.
January 31, 2017

Land Subsidence near El Nido, CA

National Geodetic Survey vertical control bench mark H1235 RESET in Merced County, California. H 1235 RESET is in the median of State Highway 15. This is one of several bench mark locations used to help measure the largest recent subsidence in the area using repeat surveys. The exact maximum subsidence location is unknown; however, this bench mark has some of the larger

...
USGS scientist standing with a pole annotated with land-surface elevation marks at given years at bench mark W 990.
January 31, 2017

Land Subsidence near El Nido, CA

National Geodetic Survey vertical control bench mark W990 CADWR in Merced County, California. W 990 CADWR is on the Mariposa Bypass Bridge on Washington Rd. This is one of several bench mark locations used to help measure the largest recent subsidence in the area using repeat surveys. The exact maximum subsidence location is unknown; however, this bench mark has some of

...
Satellite image showing the flooding in California.
January 30, 2017

January Rain, Snow Refills California Reservoirs

A decade of drought in California has eased after the first month of 2017 thanks to heavy rains and snow, a fact that Landsat images are helping to confirm.

Filter Total Items: 912
USGS
September 18, 2012

SAN DIEGO, Calif. — Solvents and other constituents - arsenic, uranium, and nitrate - were detected at high concentrations in up to four percent of untreated groundwater used for public water supply in the coastal region of Los Angeles and Orange Counties.

USGS
September 10, 2012

MENLO PARK, Calif. — The California Geological Survey is giving away free maps in preparation for the move of their Maps and Publications Sales office at the end of the month. Spurred by a U.S. Geological Survey initiative to reduce rent costs and the total amount of federal space occupied, CGS will move their map store to the second floor of the same building they currently occupy.

USGS
August 29, 2012

SAN DIEGO, Calif. — Benzene occurs infrequently in California public supply wells and comes predominantly from naturally occurring petroleum deposits deep in the ground, according to a study by the U.S. Geological Survey. Spills associated with underground fuel storage and above ground distribution systems have long been considered the main source of benzene in groundwater.

USGS
August 27, 2012

SACRAMENTO, Calif. — The U.S. Geological Survey has released updated flood frequency estimates for select rural "natural flow" California streams throughout the state. The estimates are based on greatly expanded data and documented in three reports available online. These reports from the USGS and its partners represent an important resource for emergency officials, water

Salton Sea sunset
August 27, 2012

An energetic earthquake swarm (largest event magnitude 5.5) is ongoing in the Brawley Seismic Zone south of the Salton Sea in Southern California.

USGS
August 21, 2012

SANTA CRUZ, Calif. — The southern sea otter population continues its pattern of tepid recovery, according to the latest population survey led by U.S. Geological Survey, California Department of Fish and Game Office of Spill Prevention and Response and Monterey Bay Aquarium scientists. 

USGS
August 16, 2012

MENLO PARK, Calif. — Residents should not be alarmed to witness a low-flying airplane over the northern Sacramento Valley and surrounding hills starting around August 17. 

USGS
August 15, 2012

MENLO PARK, Calif. —The U.S. Geological Survey is reducing its footprint in Menlo Park to lower rent costs. The move is part of a larger consolidation plan motivated by the Presidential directive to reduce government space utilization. There is not a plan to reduce staff, and the USGS will continue to maintain all operations currently housed in Menlo Park.

Taking GPS coordinates at the Amargosa Desert Research Site
July 24, 2012

Summer is the time when most CalVO scientists get out into the field to conduct geologic and ground-based monitoring investigations of our regional volcanoes.

USGS
July 23, 2012

Dr. Joseph Colgan, a research geologist with the U.S. Geological Survey, was named one of President Obama's recipients of the Presidential Early Career Award for Scientists and Engineers, the highest honor bestowed by the United States government on science and engineering professionals in the early stages of their independent research careers.

USGS
July 23, 2012

Dr. Karen Felzer, a geophysicist with the U.S. Geological Survey, was named one of President Obama's recipients of the Presidential Early Career Award for Scientists and Engineers, the highest honor bestowed by the United States government on science and engineering professionals in the early stages of their independent research careers. 

USGS
July 17, 2012

SAN DIEGO, Calif. — Nitrate was detected at high concentrations in one quarter of the aquifer system used for Inland Empire public water supply. Additionally, high concentrations of perchlorate were found in 11 percent of the aquifer system, and in moderate concentrations in 53 percent. This aquifer system includes the Upper Santa Ana Valley, San Jacinto, and Elsinore groundwater...