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

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Soil-temperature measurement at Hot Creek in Long Valley Caldera, C...
August 17, 2009

Soil-temperature measurement at Hot Creek in Long Valley Caldera, CA.

Soil-temperature measurement at Hot Creek in Long Valley Caldera, California.

July 30, 2009

PubTalk 7/2009 — Restoring California's "Inland Sea"

Status of efforts to restore the Salton Sea

by Lee Case, Chief Scientist, USGS Salton Sea Science Office 

 

  • The Salton Sea is California's largest lake and has a surface elevation about 230 feet below sea level
  • The Salton Sea is a terminal lake - it has no outlets, inflows are principally from agricultural
water discharging from a well along the All-American Canal
July 28, 2009

All-American Canal

The All-American Canal in Imperial County, California near the border of Arizona and Mexico. Water discharging from well LCWSP2 can be seen on the far side of the canal.

Image: California Cliffs and Coastline
July 1, 2009

California Cliffs and Coastline

Colorful vegetated clifftop near Half Moon Bay, California.

Attribution: Water Resources
Marine terraces in California
June 30, 2009

Marine Terraces near Santa Cruz, CA

Marine terraces North of Santa Cruz, California.  For information on terrace formation https://pubs.er.usgs.gov/publication/fs20183002 

Forster Tern standing
June 30, 2009

Forster's Tern Attraction Tape

A sample of the audio file of Forster's tern colony calls that will be broadcast to attract breeding terns to islands in south San Francisco Bay.

June 25, 2009

PubTalk 6/2009 — Tracking Mercury from Ore to Organism

Mercury Cycling and Bioaccumulation In a Mine-Dominated Ecosystem

By Tom Suchanek, USGS Western Ecological Research Center

 

  • Nearly 300 abandoned mercury mines and prospects are found in the California Coast Range-- the Sulphur Bank Mercury Mine at Clear Lake, CA is one of them
  • Clear Lake is one of the most
GPS station mounded on a tripod next to a groundwater well in the desert
June 18, 2009

Groundwater Monitoring, Imperial County, California

Recording location and water-level data at a groundwater monitoring site in the Imperial Sand Dunes Recreation area, Imperial County, California. The work is being done as part of a water quality and groundwater system characterization study along the All-American Canal that runs through the area.

Image: California Brown Pelican
June 11, 2009

California Brown Pelican

Birds found in and around the Salton Sea, California.

Attribution:
Image: California Brown Pelican
June 11, 2009

California Brown Pelican

Birds found in and around the Salton Sea, California.

Image: California Brown Pelicans
June 11, 2009

California Brown Pelicans

Birds found in and around the Salton Sea, California.

Attribution:
Image: California Brown Pelicans
June 11, 2009

California Brown Pelicans

Birds found in and around the Salton Sea, California.

Attribution:
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USGS science for a changing world logo
August 9, 2002

 

John D. Buffington, Western Regional Director for the U.S. Geological Survey (USGS) announced today that Rey Stendell has been named Chief Scientist for the Salton Sea Science Office (SSSO) in La Quinta, California.

USGS
August 9, 2002

John D. Buffington, Western Regional Director for the U.S. Geological Survey (USGS) announced today that Rey Stendell has been named Chief Scientist for the Salton Sea Science Office (SSSO) in La Quinta, California. 

USGS science for a changing world logo
July 24, 2002

It’s 2 in the morning, about a mile off the coast of Redwood National and State Parks in Humboldt County, California, near the northernmost part of the state. In the pitch-black night, researchers talk quietly while they wait aboard the RV Coral Sea, a 90-foot Humboldt State University research vessel.

USGS
July 24, 2002

It’s 2 in the morning, about a mile off the coast of Redwood National and State Parks in Humboldt County, California, near the northernmost part of the state. In the pitch-black night, researchers talk quietly while they wait aboard the RV Coral Sea, a 90-foot Humboldt State University research vessel.

USGS science for a changing world logo
July 3, 2002

 

When USGS scientist Dr. Kevin Lafferty visits a salt marsh at low tide, he sees much more than algae-green tinted mudflats, tidal sloughs and brine-adapted pickleweed. Like other visitors, he sees the bustle of life around the mudflats from clams, snails, and crabs, to shorebirds and long-legged waders, and gobies and killifish in the shallows of the estuary.

USGS
July 3, 2002

When USGS scientist Dr. Kevin Lafferty visits a salt marsh at low tide, he sees much more than algae-green tinted mudflats, tidal sloughs and brine-adapted pickleweed.

USGS science for a changing world logo
June 24, 2002

An international research team announced Monday it has begun drilling a 1.4-mile-deep hole along the San Andreas Fault near the Central California town of Parkfield - site of one of the longest ongoing earthquake experiments in the world.

USGS
June 24, 2002

An international research team announced Monday it has begun drilling a 1.4-mile-deep hole along the San Andreas Fault near the Central California town of Parkfield - site of one of the longest ongoing earthquake experiments in the world.

USGS science for a changing world logo
June 20, 2002

The application of the pesticide diazinon on orchards, and the amounts found in rivers and streams in the Sacramento and San Joaquin Basins in Northern California, were considerably lower in 2000 than in the 1990s according to two recently released reports by the U.S. Geological Survey (USGS).

USGS
June 20, 2002

The application of the pesticide diazinon on orchards, and the amounts found in rivers and streams in the Sacramento and San Joaquin Basins in Northern California, were considerably lower in 2000 than in the 1990s according to two recently released reports by the U.S. Geological Survey (USGS).

USGS science for a changing world logo
June 11, 2002

Equipped with binoculars and spotting scopes, scientists and skilled volunteers paired up onshore. Other crews were airborne. Together they scanned 375 miles along the California coast for sea otters during May, from Half Moon Bay south to Santa Barbara.

USGS
June 11, 2002

Equipped with binoculars and spotting scopes, scientists and skilled volunteers paired up onshore. Other crews were airborne. Together they scanned 375 miles along the California coast for sea otters during May, from Half Moon Bay south to Santa Barbara.