Images

Cary 300 Spectrophotometer

Carbon Lab

Laminar Flow hood in Carbon Lab

Horiba Aqaulog - simultaneously measures absorbance spectra and fluorescence Excitation-Emission Matrices

Trace Metals Lab

Trace Metals Lab fume hood

Locations of the July 2019 Ridgecrest, CA earthquake epicenters and five USGS groundwater-monitoring sites with corresponding hydrographs. Effects from the two earthquakes were observed in several USGS continuous groundwater-level monitoring sites in California, Nevada, and Arizona.

Sierra Keller, Physical Science Technician, and Sharon Mulready, Student Trainee, both of the USGS California Water Science Center's Santa Cruz Field Office, install a solar panel on a rural streamgage station along the Arroyo Seco near Greenfield in Monterey County, California.

USGS Hydrologist, Krishangi Groover, lays wire in preparation for geophysical data collection at the U.S.

On July 8, 2019, California Geological Survey and USGS geologists and geophysicists with National Guard and Navy personnel, view the road damage resulting from 3 to 5 feet of right-lateral motion near the expected maximum slip locality along the primary tectonic rupture associated with the M 7.1 Ridgecrest earthquake on July 5, 2019.

Mt. Diablo as seen from Twitchell Island

 Close-up of a wetland, showing multiple sources of DOM

Vegetation grows abundantly on a once-flooded region of the Santa Ynez River. Located 5 ft adjacent from this picture is the actual flowing region of the stream. It is impressive to see the abrupt change in vegetation near stream environments.

The California Aqueduct flowing near Huron, CA in the San Joaquin Valley.  This spot is near one of several USGS land subsidence monitoring stations in the San Joaquin Valley.

Drying table with clean dishes

Samples being analyzed in a sealed quartz cuvette on the Aqualog spectrophotometer

USGS Scientists taking sediment core USGS Scientists taking sediment core at Six Gill Slough restored marsh.

Location of the study area for the San Diego Hydrogeology project, and location of the major coastal river basins in San Diego County (San Dieguito River, San Diego River, Sweetwater River, Otay River, and Tijuana River).

Coastal drainage basins and locations of realtime sites in San Diego County, California.  Local features include the San Dieguito River Basin, San Diego River Basin, Sweetwater River Basin, and Otay River Basin.

USGS researcher collecting a water sample from Flea Valley Creek, California as part of effort to understand impacts on water quality caused by 2018 Camp Fire in Paradise, California.

Snow falls on USGS Hydrologist, Joe Nawikas, as he collects groundwater samples in Mammoth, California.