Images

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.

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

Drying table with clean dishes

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.

Drilling Capabilities- Kaiparowits UT Drill rig site. This is a drill rig site in Utah.

USGS scientist looking at laptop on boat

Annual time series of precipitation and average air temperature for three future climate models for Indian Wells Valley, California as simulated by the Basin Characterization Model. Three future climate projections were selected from among 20 models used for California’s Fourth Climate Change Assessment for application to Indian Wells Valley.

water filtration plant in contra costa county, california

View of Mt. Diablo from Twitchell Island in California's Sacramento-San Joaquin Delta

Joshua trees dot the desert landscape on Edwards Air Force Base in Antelope Valley, CA.  

Tableau visualization - Bay-Delta Regional Monitoring Program phytoplankton map showing levels of chlorophyll-a (µg/L) (FP) from May 2018.

SF Bay-Delta at Big Break Visitor Center, Oakley, CA

The Mojave Shallow Groundwater Study focused on two areas — the floodplain aquifer and the regional aquifer surrounding it. Both areas are tapped by private domestic wells with depths ranging from about 90—600 feet deep. A total of 59 domestic and monitoring wells were sampled from January through May 2018 with well depths ranging from about 50-250 feet deep.

This photo of Lake Shasta in Northern California shows low water levels during recent drought.

Photo of Nick Framsted, a Physical Scientist at the California Water Science Center.

USGS technicians preparing for a streamflow measurement by lowering an acoustic Doppler current profiler from a cable way on the American River near Fair Oaks, California. 

USGS technicians prepare to board a boat to go out to the center of the channel in the San Joaquin River below Friant Dam to get an accurate measurement of water flow during releases from the Dam for flood control.